2011 Modified Rules Rvsd 1.17.2011
2011 Modified Rules
GTRP will be running USMTS Rules for the 2011 Season. I have attached the following rules from USMTS. For further information, you can visit www.usmts.com for a listing of the rules as well. GTRP EXCEPTIONS: We will not allow claiming at a weekly show. Gee General Rules for protest information.
THE RULES AND/OR REGULATIONS SET FORTH HEREIN ARE DESIGNED TO PROVIDE FOR THE ORDERLY CONDUCT OF RACING EVENTS AND TO ESTABLISH MINIMUM ACCEPTABLE REQUIREMENTS FOR SUCH EVENTS. THESE RULES SHALL GOVERN THE CONDITION OF SPEEDWAY EVENTS AND, BY PARTICIPATING IN THESE EVENTS, ALL RACEWAY COMPETITORS ARE DEEMED TO HAVE COMPLIED WITH THESE RULES. NO EXPRESS OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATION OF, OR COMPLIANCE WITH THESE RULES AND REGULATIONS. THEY ARE INTENDED AS A GUIDE FOR THE CONDUCT OF THE SPORT AND IN NO WAY ARE A GUARANTEE AGAINST INJURY OR DEATH TO PARTICIPANTS, SPECTATORS
NOTE: Significant and/or material changes from the published 2010 USMTS rules are highlighted in red.
Updates to calendar dates, and changes made for grammatical purposes or to improve clarity are not
References are made throughout these regulations requiring and/or recommending that particular
products meet certain specifications (i.e. SFI, Snell, etc.). These products are manufactured to meet or
exceed certain criteria and are labeled as such upon satisfying those criteria. Any change to these
products voids that certification. Under no circumstances may any certified product be altered from
the “as manufactured” condition or such certification is voided.
The United States Modified Touring Series shall hereafter be simply referred to as USMTS throughout
the rules description. USMTS official(s) shall include all personnel employed as an official by
TABLE OF CONTENTS
Article 1: Definitions
Article 2: General Rules
Article 3: Points, Provisionals, Awards & Procedures
Article 4: Body
Article 5: Roll Cages
Article 6: Frame
Article 7: Cockpit
Article 8: Suspension
Article 9: Electrical System
Article 10: Fuel System
Article 11: Tires & Wheels
Article 12: Braking System
Article 13: Drive Shaft
Article 14: Transmission
Article 15: Rear End
Article 16: Engine
Article 17: Weight
Article 18: Safety
Article 19: Claiming Procedures
Appendix A: Body Specifications Diagram
ARTICLE 1: DEFINITIONS
1.1 Racecar: An automobile designed solely for competition on oval race tracks, controlled from
within by a driver.
1.2 Automobile: A vehicle which carries its own motor and operates on four non-aligned complete
wheels, of which two are used for steering and two for propulsion.
1.3 Vehicle: A man-made locomotive device propelled by constantly taking real support on the
earth's surface whereas the propulsion and steering are under the control of a driver aboard
1.4 Driver: The person controlling the operation of the racecar. The driver is expected to
understand how to operate the mechanisms which control the speed, direction and braking of
1.5 Participant: A person directly involved in the mechanical operation and/or management of a
racecar, including, but not limited to, drivers, crew members, racecar owners, sponsors and
their family members.
1.6 Event: A USMTS-sanctioned competition between two or more competitors and their racecars.
An event shall consist of practice (hot laps) and actual racing contests.
1.7 Official: An official shall be any person participating in the exercise of authority for enforcing
or interpreting these rules. The official may also make judgments concerning the conduct of
participants and declare penalties for breaches of these rules, as well as perform technical
inspections on any USMTS racecar. The combination of officials may vary from week to week
and from one racetrack to another.
1.8 Promoter: An entrepreneur who oversees the operations of the racetrack, either as a tenant or
owner of the facility. Furthermore, the promoter is the person responsible for the
implementation of rules, hiring staff and financial compensation to participants.
1.9 Cockpit: The volume of the racecar which accommodates the driver.
ARTICLE 2: GENERAL RULES
2.1 USMTS rules shall apply at all events. All participants are subject to the rules of the USMTS and
are expected to know the rules. An expressed ignorance of USMTS rules by any participant will
not be recognized as a valid argument for failure to comply with USMTS rules.
2.2 Approval of any racecar by an official shall mean that the racecar is approved for participation
in the event and shall not be construed in any way to mean that the inspected vehicle is
guaranteed to be mechanically sound or safe. Be it further declared that officials and/or the
USMTS shall not be liable for any mechanical failure, nor for any losses, injuries or death
resulting from the same.
2.3.1 Participants will conduct themselves as professionals. Any unsportsmanlike conduct by a
participant shall be grounds for disqualification and/or punitive action by the USMTS. This will
be strictly enforced.
2.3.2 Drivers are responsible for the conduct and actions of their car owners, crew members,
sponsors and family members.
2.3.3 Absolutely no alcoholic beverage or other illegal chemical substance may be consumed by a
driver prior to, or during, an event. The duration of the event shall also include all support
class events run as a part of the overall program. The use, sale or distribution of illegal drugs
at any time shall be cause for immediate and indefinite suspension.
2.3.4 Any participant who defies or violates the intent or spirit of the USMTS rules shall be
considered to have engaged in unsportsmanlike conduct and shall be dealt with accordingly and
swiftly by the USMTS. Unsportsmanlike conduct shall include, but is not limited to, participant
entering another driver’s pit area; threatening or touching an official; throwing a tantrum or
acting outrageous due to an official decision; removing helmet during race conditions; use of
profanity or obscene language directed at officials or other participants; intentionally making
contact with another racecar following the finish of race or during a race under non-racing
conditions (i.e. caution periods); fighting; and/or publicly criticizing USMTS officials, rules,
decisions or sponsors.
2.4 All drivers must be at least fourteen (14) years of age (proof of age required). Drivers under
eighteen (18) years of age are required to have a signed and notarized Parental Consent Form.
The Parental Consent Form must be signed by a parent or legal guardian, and must be received
by USMTS headquarters prior to participation of the driver in any event.
2.5 The USMTS may require any driver to undergo a physical examination by a licensed health care
provider prior to being allowed to participate in any event.
2.6 Drivers must properly display approved USMTS sponsor decals in order to participate in any cash
or contingency award program related to that sponsor. Decals must be displayed on both sides
of the racecar – not on deck or trunk lid - and must be of the original size and design
distributed by the USMTS. At each event, drivers must properly display the approved USMTS
logo decal in order to receive any points, prize money or contingency awards for that event.
2.7 No equipment or racecar will be considered as having been approved by reason of having
passed through inspection unobserved.
2.8 All racecars must be able to join the race lineup on demand and unassisted, or must go to the
rear of the lineup for the start of the race.
2.9 The USMTS reserves the right to add to, delete, supersede or modify any rule, exhibit or
drawing that the USMTS deems necessary for the conduct of events and/or safety of
participants. All amendments are effective on the date of publication by the USMTS regardless
of when a person subject to the rules receives actual notice of the amendment.
2.10 Every driver must inspect the racing surface and the track area to learn of any obstructions or
other defects which, in the driver’s opinion, presents an unsafe condition for competition. The
driver shall report any unsafe condition in writing to an official. Any driver that competes in an
event is considered to have inspected the track surface and surrounding perimeter to
determine that all conditions are satisfactory. If the driver does not feel that the conditions
are satisfactory, the driver should not compete in the event. The driver further acknowledges
that he or she is aware that auto racing involves risk, and that by competing in an event, the
driver assumes these risks with full awareness and responsibility.
2.11 All drivers are responsible for registering their racecar for each event in order to ensure their
respective starting position in each event.
2.12 The USMTS and/or promoter reserve the right to refuse to accept the entry of any racecar or
participant. Furthermore, the USMTS and/or promoter reserves the right to revoke or cancel
any entry, or any participant’s claimed right to be on the racetrack’s premises, if it is
determined that a participant’s presence or conduct is not in the best interest of the sport of
auto racing, other participants, spectators, track management and/or employees of the USMTS.
2.13 Lighted signaling devices, hand signals or any other equipment or methods used for
communication during an event between a non-competing participant and a driver is not
2.14 Radios and any other devices used for transmitting or listening are not allowed on the racecar.
Exception: Officials may require drivers to utilize a one-way radio to enable audio
communication from officials to drivers. Furthermore, racecars may be fitted with a timing
transponder as supplied by officials.
2.15 No computers allowed on the racecar, including, but not limited to, electronic traction control
devices. Any driver found to be using traction control will be subject to a minimum fine of five
thousand dollars ($5,000) and up to a lifetime suspension from all events.
2.16 Technical Inspections:
2.16.1 No fewer than the top three (3) finishers in the “A” Main will be required to report to a
designated tech area following the “A” Main, where mandatory and varied post-race technical
inspections will be performed.
2.16.2 At the discretion of the official(s) overseeing an event, any participant may be disqualified by
the official(s) for violation of any USMTS rule(s) and/or equipment and/or action(s) deemed to
be hazardous to other participants or officials.
2.16.3 All racecars are subject to inspection by an official at any time. Any driver whom refuses to
allow any inspection by an official, or terminates an inspection in progress, shall be subject to
a fine of two-thousand dollars ($2,000), suspension from all USMTS events for fourteen (14)
days, loss of all points earned to-date for the current season and forfeiture of all cash and/or
awards earned at the event.
2.16.4 Any illegal part discovered through inspection shall be confiscated by officials and forfeited by
the driver. For first infraction, driver discovered to be using illegal parts of any kind shall be
subject to a fine of two-thousand dollars ($2,000), suspension from all USMTS events for
fourteen (14) days, loss of all points earned to-date for the current season and forfeiture of all
cash and/or awards earned at the event. For second infraction, driver discovered to be using
illegal parts of any kind shall be subject to a fine of five-thousand dollars ($5,000), suspension
from all USMTS events for one (1) year, loss of all points earned to-date for the current season
and forfeiture of all cash and/or awards earned at the event. Confiscated parts will be sent to
manufacturer for inspection. Failure by the driver to surrender any illegal part for confiscation
shall result in a separate penalty, in addition to other applicable penalties under this rule. A
“part” shall be defined as any piece of the racecar and/or competitor's apparel, including, but
not limited to, tires, wheels, engine components, chassis components and fuel.
2.16.5 The overall weight of the racecar shall be measured at the conclusion of an event with the
driver in the cockpit, wearing complete racing apparel.
2.16.6 All measurements must be made while the racecar is stationary on a flat horizontal surface.
2.17 Decals and Contingency Awards:
2.17.1 Drivers must properly display approved USMTS sponsor decals in approved locations on the
racecar in order to participate in any prize money, points funds and/or contingency awards
which require specific decals and/or decal placement for eligibility. Decals shall be distributed
by the USMTS, along with a description of each sponsor’s program, decal placement
requirements and contact information.
2.17.2 Each racecar must properly display the approved USMTS logo decal or USMTS National Tour
decal in order to participate in any points funds. Decal must be positioned on both sides of the
racecar at the front of the door below the window opening.
2.18 Decisions of the USMTS are final and binding without exception.
2.19 These rules have been set by the USMTS and are subject to change without notice. All
promoters will be informed of any changes to these rules after the date of publication, and
those changes should be made available to drivers at their racetrack and/or announced at
drivers meeting. The USMTS will also publish any amendments to these rules on the USMTS
website at www.usmts.com.
ARTICLE 3: POINTS, PROVISIONALS, AWARDS & PROCEDURES
3.1.1 Drivers must possess a valid USMTS license in order to earn points and/or be eligible for points
funds or contingency awards. A USMTS license application may be downloaded at
3.1.2 The cost of a USMTS license shall be $150 per region. Note: There is no requirement that a
driver purchase a USMTS license to compete in any event. However, benefits enjoyed by
licensed drivers include higher event purses and bonus payouts, increased tow money,
discounted entry fees, contingency awards, points funds, increased media recognition, a
personalized driver profile page on the USMTS website and more.
3.1.3 Drivers possessing a USMTS license are eligible to earn points for events held in the region for
which they possess a license. Driver must possess a USMTS license for the region in which an
event is held in order to be eligible for the licensed pay scale for that event.
3.1.4 Drivers who qualify for The Hunt (see Rule 3.6) and possess a USMTS license for The Hunt are
eligible to earn points in The Hunt. The cost of a license for The Hunt is $100 or shall be
included with the purchase two (2) or more regional licenses. Drivers who are not qualified for
The Hunt may purchase a license for The Hunt and shall be eligible for all of the benefits of a
licensed driver except points and points funds in The Hunt.
3.1.5 Drivers must be licensed prior to the start of an event in order to earn points for that event.
Points will not be awarded retroactively.
3.2.1 In addition to possessing a valid USMTS license, drivers must also meet other eligibility
requirements in order to earn points in an event, including, but not limited to, utilizing
American Racer KK704 tires on all four wheels and displaying required USMTS and sponsor
3.2.2 Points will be awarded to each eligible driver in the “A” Main as follows: 1st - 100 points, 2nd -
95 points, 3rd - 91 points, 4th - 87 points, 5th - 84 points, 6th - 81 points, 7th - 78 points, 8th -
76 points, 9th - 74 points, 10th - 72 points, 11th - 70 points, 12th - 68 points, 13th - 66 points,
14th - 64 points, 15th - 62 points, 16th - 60 points, 17th - 58 points, 18th - 56 points, 19th - 55
points, 20th - 54 points, 21st - 53 points, 22nd - 52 points, 23rd - 51 points. All other drivers
that start the “A” Main and finish below 23rd are awarded 50 points. All eligible drivers that
fail to qualify for the “A” Main are awarded 45 points. In order to earn the minimum 45 points,
driver must be in full uniform and must participate (racecar on the racetrack) during hot laps.
If mechanical or other unforseen circumstances prevent that driver from participating in hot
laps, that driver will be credited for a start toward their attendance totals, but will be
awarded no points for that event.
3.2.4 Lap Leader Bonus: Each driver that leads at least one (1) lap in the “A” Main will earn one (1)
bonus point. The driver that leads the most laps in the “A” Main will earn two (2) bonus points
(tie goes to the highest-finishing driver).
3.3 Qualifying Procedures:
3.3.1 The following qualifying procedures are typical, but may be altered on a per-event basis when
USMTS officials deem necessary due to car count, track or weather conditions, attrition, etc.
3.3.2 Drivers must draw for starting positions in heat races. Cut-off for draw is typically 15 minutes
prior to start of hot laps. Drivers failing to draw before cut-off time shall be lined up at the
rear of the earliest heat race with the smallest starting field.
3.3.3 Drivers failing to start their scheduled heat race shall be scored in last place for that heat race.
Drivers shall not be allowed to start at the rear of another heat race if they fail to start their
scheduled heat race.
3.3.4 Heat races will award 59 points to the winner, then descending by 4 points for each finishing
position thereafter (59-55-51-47-43-39, etc.). Each driver will earn an additional 1.5 points for
each racecar passed in the heat race, based on actual starting position versus actual finishing
position. The sum of these points shall be the driver’s total Passing Points. Typically
(depending on car count), the top-12 drivers in Passing Points qualify for the first 12 starting
positions in the “A” Main. Of those, the top-8 drivers in Passing Points will redraw for starting
positions 1 through 8, with the remaining four drivers starting “heads up” by Passing Points in
positions 9 through 12. Officials may elect to stage a “dash” race among the top 8 qualifiers to
determine the starting line-up (this is not typical). Heat race passing points are not factored
into the actual points earned for an event.
3.3.5 One or more “B” Mains will be staged with non-qualified drivers starting “heads-up” by Passing
Points. The top-12 “B” Main finishers (typical) shall start the “A” Main heads-up by “B” Main
finish in positions 13 through 24. If a “B” Main driver qualifies for the “A” Main but is unable to
start the “A” Main, the next highest finisher behind that driver in the same “B” Main may
advance to the “A” Main.
3.3.6 When the total number of entries for an event is 40 or less, 24 drivers shall start the “A” Main.
When the total number of entries for an event is 41 or more, 26 drivers shall start the “A”
3.4 Provisional Starters
3.4.1 One (1) USMTS-licensed driver shall be added to the rear of the “A” Main field as a provisional
3.4.2 The provisional starter will be the highest-ranked driver in points for that region (or the Hunt)
3.4.3 Driver must possess a USMTS licensed for that region and have perfect attendance in that
region to be eligible.
3.4.4 Each driver shall be eligible for one (1) provisional in each region and/or The Hunt.
3.4.5 The provisional starter shall be awarded prize money for the difference of start money and
their feature finish money but shall receive full points earned in the "A" Main.
3.4.6 If all drivers that possess a USMTS license for that region qualify for the “A” Main, no
provisional starter shall be added.
3.4.7 For the first race of 2011 in each region, points from 2010 in each region shall be used in
determining eligible provisional starters.
3.4.8 Track operators and event promoters may elect to add provisional starters to the “A” Main at
their discretion, but those drivers will not earn any additional points in the “A” Main.
3.5 Top Dog Bonus:
3.5.1 Drivers ranked among the top-10 in points will be guaranteed a minimum of $400 in earnings at
each event where that driver is among the top-10 in points for that region (or The Hunt).
3.5.2 To be eligible for the Top Dog Bonus, driver must have perfect attendance in the region (or The
Hunt) where the event is held. If a driver is absent from one (1) or more event(s) in a region,
that driver is no longer eligible for the Top Dog Bonus in that particular region.
3.5.3 The Top Dog Bonus will take effect beginning with the third race in each region. The Top Dog
Bonus will take effect beginning with the first race in The Hunt.
3.6 Points Funds:
3.6.1 Points funds shall be paid out to no fewer than the top-10 finishers in final points. USMTS
National Tour regional points funds are based on ten (10) races or more and shall be prorated if
fewer races are completed in that region. If less than ten races are completed, the points fund
will be based on the percentage of completed events (9 races = 90% points fund, etc.).
3.6.2 If a driver is absent from one (1) event in a region (or The Hunt), the points funds awarded
shall be one-half of the posted amount. If a driver is absent from two (2) or more events in a
region, the driver shall be paid a percentage of races competed in, based on the initial onehalf
amount for missing a single event.
3.6.3 In the event of a tie for any position in the final points of a region (or The Hunt) where points
funds are awarded, the higher-ranked driver shall be the driver with the most wins. Should a
tie still exist, the next determining factors shall be top-5 finishes, top-10 finishes and events
started, respectively. Drivers that are tied in positions that do not award points funds shall
remain tied for that position.
3.7 The Hunt shall be comprised of the final 15 to 20 USMTS National Tour events (depending upon
final schedule, rain-outs and/or other unforeseen circumstances) and shall determine the
USMTS National Champion, the final USMTS National Tour points standings and subsequent
points funds to be distributed. The USMTS points system (see Rule 3.2.2) shall be used at all
regional events, with the top-10 in the final points standings in each region earning 15 base
points for first place, 14 base points for second place and so forth, descending to 6 base points
for 10th place. Each driver who competed at all events within a region prior to the first event
of The Hunt shall also earn 5 base points regardless of finishing position. The cumulative base
points earned for all regions shall serve as the total base points that each driver will start The
Hunt with. The USMTS points system will be used at the remaining events in The Hunt to
determine the USMTS National Champion and subsequent final points standings.
3.8.1 Cash, trophies and contingencies designated for USMTS rookie drivers shall be awarded to
drivers who fulfill and meet all minimum requirements as a rookie.
3.8.2 Driver must possess a valid USMTS license and shall earn points in each region (or The Hunt)
where that driver possesses a USMTS license.
3.8.3 Driver may not have participated in more than fifteen (15) USMTS National Tour events in a
single season, or more than twenty-four (24) USMTS events overall.
3.8.4 Driver may not have won a USMTS “A” Main during a prior year.
3.8.5 Driver may not have previously won a Rookie of the Year award or championship title with any
similar touring series or sanctioning body.
3.8.6 Official decisions regarding rookie eligibility are final, binding and not subject to appeal.
3.8.7 Rookie points shall be awarded to each eligible rookie driver based on his/her best twenty-four
(24) points-earning performances in all USMTS National Tour events.
3.9 Grace Race: Driver may submit a completed entry form and pay the entry fee for an event they
will not attend. This option will allow for a driver to be physically absent from a maximum of
one (1) event in any region and a maximum of two (2) events overall in the USMTS National
Tour. Driver purchasing a Grace Race will be credited with a “start” for that event and may
retain perfect attendance status for purposes of Top Dog Bonus eligibility and qualification for
The Hunt. There will be no points or prize money awarded for a Grace Race.
ARTICLE 4: BODY
4.1 1970 or newer American compact passenger car only. Panel vans or station wagons are not
4.2 An aluminum half-windshield may be used on driver’s side of the front window opening only.
4.3 Stock appearing front window support units must be used (painted roll bars are not acceptable
substitutes). Front window may have a support of no more than six (6) inches at bottom, going
straight up to top for non-clear materials. Support may be up to ten (10) inches at bottom,
going straight up to top, only if it is a clear Lexan material.
4.4 A minimum window opening of twelve (12) inches must be maintained on both side window
4.5 Streamlining at top of windshield is not allowed. Bodies must have standard appearing
windshield opening and corner post must follow standard configuration.
4.6 Original roof line of vehicle must be maintained with a maximum of five (5) inches of slope
from rear to front. No more than one-half (1/2) inch stiffener allowed at the rear of the roof
and must turn down perpendicular to the ground. OEM Gremlin roofs are not allowed.
4.7 Sail panels must be of matching design with matching styles on both sides of racecar and a
maximum bow of four (4) inches.
4.8 Reverse hood rake is not allowed. Hood must slope forward toward nose of racecar.
4.9 Belly pans are not allowed. A belly pan will be defined as any object or material that alters the
airflow under the racecar.
4.10 Panel(s) in front of the right door next to the engine compartment is not allowed.
4.11 Racecars with excessive (to be determined by an official) body damage will not be allowed to
4.12.1 If utilizing a Flat Tappet/Steel Head Engine (see Rule 16.16), BRODIX Aluminum Spec Head
Engine (see Rule 16.17) or CT525 Crate Engine (see Rule 16.18), the maximum rear spoiler
height shall be eight (8) inches. If utilizing any other steel or aluminum heads other than the
BRODIX Aluminum Spec Heads, the maximum rear spoiler height shall be five (5) inches.
4.12.2 Rear spoiler may not exceed the width of the rear deck lid and must be flush to the deck.
4.12.3 A maximum of two (2) center supports and a maximum of two (2) side supports may be
attached to the front of the rear spoiler. Supports may extend up to two (2) inches above and
behind the rear spoiler. Each support may be a maximum of twenty (20) inches in length and
must angle back from three (3) inches in the front. Supports may not be squared and may not
be longer than twelve (12) inches before the break to angle to three (3) inches. If running
adjustable spoiler, supports may not be more than two (2) inches from any spoiler angle.
4.12.4 Fins, wings or other air spoilers (except as noted above) are not allowed.
4.13 The rear deck lid and/or trunk area must be covered.
4.14 Aluminum roofs are permitted.
4.15 Doors and quarter panels may be mounted a maximum of one (1) inch above the deck.
4.16 Excluding hood and nosepiece, the top of the body should extend no further forward than the
back of the engine block. The bottom of the body may extend up to eight (8) inches forward of
the back of the engine block.
4.17 Nose may not extend past front bumper and must be a minimum of seven (7) inches above the
ground. A two (2) inch lip on the nose is permitted, but may go no further than leading edge of
4.18.1 Both front and rear bumpers must be used, and may not have any sharp edges. Any
inappropriate bumper may be disallowed at the discretion of an official. Front bumper should
be mounted from frame-end to frame-end with the bottom loop parallel to ground. Bumpers
must be made of a minimum of one and one-quarter (1-1/4) inch tubing and must be able to
support the racecar if lifted by a tow vehicle. Top bar must be directly above bottom bar.
4.18.2 Rear bumpers may be constructed of tubing or flat stock, and must protect the fuel cell.
Center of bumpers (front and rear) must be at least sixteen (16) inches from the ground and no
more than twenty (20) inches from ground. Rear bumpers may be no more than two (2) inches
wider than the body on each side and may not be open-ended (must wrap around and be
connected to side rail bars).
4.19.1 All racecars must be numbered with large legible numbers on both sides, on top and on the
nose and real panels. Numbers on the sides of the racecar should be in contrasting color from
the body and be at least four (4) inches thick and at least eighteen (18) inches high. Top
numbers should be at least four (4) inches thick and twenty-four (24) inches high.
4.19.2 Officials reserve the right, in the public image of the sport and/or the USMTS, to assign,
approve or disapprove any advertising, sponsorship or similar agreement in connection with any
event. All cars must be neat appearing and are subject to approval of officials to compete. By
competing in an event, all drivers agree to comply with the decisions of officials in this regard.
4.20 Overall width of the racecar may not exceed 78 inches. Width shall be measured from the
widest points on each side of the racecar.
ARTICLE 5: ROLL CAGES
5.1 Round steel tubing, seamless roll-over bars are required for the basic roll cage, and must be
acceptable to officials. Acceptable tubing is as follows: one and three-quarters (1-3/4) inches
by nine-tenths (.090) of an inch or one and on-half (1-1/2) inches by ninety-five onehundredths
(.095) of an inch for mild steel and DOM tubing (one and three-quarters (1-3/4)
inches by eighty-three one-hundredths (.083) of an inch for chrome-moly tubing). Aluminum
and/or other soft metals are not allowed. Roll bar connections must be properly welded.
5.2 Roll bars within the driver’s reach must be padded with an accepted material as determined by
an official. Fire retardant material is highly recommended.
5.3 Installation and workmanship must be acceptable to officials.
5.4 Must be frame-mounted in at least six (6) places.
5.5 Must consist of a configuration of front and rear hoops connected by tubing on the sides or side
5.6 With helmet on and driver securely strapped into the racing seat, top of driver’s head must not
protrude above the roll cage.
5.7 Must have a protective screen or bars in front window opening in front of driver’s face.
5.8 Protection of driver’s feet utilizing a bar across the back of the engine with vertical bars and
rub rails or similar protection is mandatory.
5.9 Brace bars forward of roll cage may not be higher than the stock hood height.
5.10 A minimum of three (3) driver side door bars must be parallel to ground and located
perpendicular to the driver so as to provide maximum protection for the driver, but without
causing undue difficulty in getting in or out of the racecar. Side bars must be welded to the
front and the rear of the roll cage members. Door bars with a thickness of less than nine-tenths
(.090) of an inch should have four (4) bars at least one and one-half (1-1/2) inches in diameter
at a minimum of eighty-three one-hundredths (.083) of an inch thickness and be gusseted in
place. The door bars must have six (6) vertical studs per side of one and three-quarters (1-3/4)
inches by eighty-three one-hundredths (.083) of an inch minimum seamless round tubing
ARTICLE 6: FRAME
6.1 Factory production complete full 1960 or newer parallel American passenger car frames only.
Frames may be cut in rear only at a point not further than thirty-six (36) inches from center of
rear end housing.
6.2 May only be altered for the installation of springs and shocks.
6.3 All components must be made of steel and be properly welded.
6.4 Must be full and complete on both sides, may not be widened or narrowed and must be able to
support roll cage on both sides.
6.5 Minimum height from ground is four (4) inches. Exception: Front cross member may be notched
for radiator clearance only.
6.6 No Jeep, Bronco or similar four-wheel drive frames allowed. No sports car frames allowed. No
6.7 Rear of frame may be altered to accept leaf or coil springs.
6.8 No hydraulic, ratchet or electric weight jacks anywhere on the racecar. Aluminum jack bolts
are not allowed.
6.9 Wheelbase must be a minimum of one-hundred eight (108) inches on both sides (no tolerance).
6.10 Tubular front clips are not allowed.
6.11 Maximum overall width of car (at front or rear) shall not exceed seventy-eight (78) inches from
outside of tread to outside of tread (no tolerance).
ARTICLE 7: COCKPIT
7.1 Loose objects and/or weights are not allowed.
7.2 Air bags are not allowed.
7.3 Rear view mirrors are not allowed.
7.4 Floor and firewall must be complete in the driver’s compartment. No interior sheet metal can
be higher than or enclose a standard window opening. Sheet metal in the driver’s compartment
must be horizontal from the top of the driver shaft tunnel to the right side door bars or angle
from the top of the drive shaft tunnel upwards to the top of the right side door bars. Driver
must be able to exit the racecar from both sides.
7.5.1 Must be OEM and must remain within original bolt pattern for type of frame used
7.5.2 Rack and pinion is not allowed.
7.5.4 May be modified to suit driver, but must remain on left side of cockpit (no center steering).
7.5.5 Quick-release metal coupling on steering wheel is mandatory. Plastic couplings are not
7.6.1 Factory-manufactured racing seats are mandatory, and must be acceptable to officials.
7.6.2 Homemade aluminum, plastic or fiberglass seats are not allowed.
7.6.3 Must be properly installed and seat back cannot be moved back further than rear edge of
7.6.4 High-back aluminum seats only. Full containment racing seats are strongly recommended.
ARTICLE 8: SUSPENSION
8.1 Must remain stock-type for the type of frame being used. Steel aftermarket parts may be used
as stock components as long as they mount in the stock location and are the same size as the
OEM parts. This includes lower tubular A-frames. If using lower tubular A-frames, must match
8.2 Aluminum and/or titanium components are strictly forbidden. Magnet must stick to all
8.3 Steel tube-type upper A-frames are allowed and may be moved.
8.4 Steel or aluminum cross shafts are permitted.
8.5 Stock passenger car spindles only. Fabricated spindles are not allowed. Bottom A-frames may
not be altered, lightened or moved.
8.6 Front sway bars may be used. Front sway bars must be made of steel and may be attached to
the bottom A-frame using steel heim joints. Must be solid full-length OEM.
8.7 Rear panhard bars may be used. Must be made of steel and may be attached by using a
minimum three-quarter (3/4) inch i.d. steel heim joint.
8.8 Steel coil-over eliminators or steel/aluminum coil-over kits are permitted, but must conform to
shock and spring rules.
8.9 Suspension and/or rear-end parts must be made of steel. Aluminum mounting brackets are
8.10 Shocks & Springs:
8.10.1 One shock only per wheel is permitted.
8.10.2 Aluminum heims on shocks are not allowed (steel caps only).
8.10.3 Air shocks are not allowed.
8.10.4 All coil springs must be at least four and one-half (4-1/2) inches outside diameter. Springs must
be made of steel. Torsion bars are not allowed in rear.
8.10.5 Canister shocks are not allowed.
8.10.6 External rubber bump stops are permitted (steel or plastic cup only).
8.10.7 Shocks shall be subject to claim, as outlined in Claim Procedures (Article 19).
8.10.8 Progressive springs are not allowed (except on pull bar or lift bar).
ARTICLE 9: ELECTRICAL SYSTEM
9.1.1 Must be securely mounted and covered.
9.1.2 One (1) 12-volt or 16-volt battery is permitted.
9.1.3 Voltage converters are not allowed.
9.1.4 Positive battery posts must be covered.
9.2.1 Magnetos and/or crank-triggered ignitions are not allowed.
9.2.2 One (1) coil only is permitted.
9.2.3 Kill switch required within easy reach of the driver. The switch must be clearly marked “off”
9.2.4 MSD ignition boxes shall be subject to claim, as outlined in Claim Procedures (Article 19).
9.2.5 Must utilize a 7,500 RPM rev-limiting chip if utilizing a CT525 Crate Engine. Chip may not be
within reach of the driver while in cockpit and must be accessible to officials at any time.
Officials will distribute chips to each driver each race night. Any driver caught altering the chip
or ignition system in any way so as to defeat the chip rule shall receive a 30-day suspension,
loss of all track and national points for the night and a $1,000 fine for the first offense. Second
offense shall be a one-year suspension, loss of all track and national points for the season and a
ARTICLE 10: FUEL SYSTEM
10.1.1 Must be automotive gasoline or alcohol only. Additives of any kind are not allowed. E85 ethanol
or racing fuel is permitted. Penalty for illegal fuel is loss of points, cash and awards earned for
10.1.2 May not be blended with ethers or other oxygenates, and may not be blended with aniline or
its derivatives, nitro compounds or other nitro containing compounds. Oxygenated fuel is not
10.2 Electric fuel pumps are not allowed.
10.3.1 One (1) two-barrel, four-barrel or Predator carburetor properly installed will be permitted.
10.3.2 Must be naturally aspirated.
10.3.3 Fuel injection is not allowed.
10.3.4 An adapter with gasket is permitted. Adapter and gasket combined may be no more than two
and one-quarter (2.25) inches.
10.4 Fuel cell:
10.4.1 Must be commercially manufactured and must be mounted utilizing at least two (2) steel
straps. Straps must be two (2) inches wide at all measuring points.
10.4.2 Must be enclosed in a steel container and must be protected in rear of axle by roll cage tubing
10.4.3 No part may be lower than protective tubing. Protective tubing must be no wider than six (6)
inches on both sides. Fuel cell may be no lower than ten (10) inches from the ground.
10.4.4 Must have check valves.
10.4.5 Limited to a maximum capacity of thirty-two (32) gallons.
10.4.6 Must have check valves. A ball-type, flapper or spring or filler rollover valve is mandatory for
fuel cells without a positive seal filler neck/cap system.
ARTICLE 11: TIRES & WHEELS
11.1.1 Must be fifteen (15) inches in diameter and eight (8) inches in width.
11.1.2 Stickers are not required.
11.1.3 Must be reinforced steel only.
11.1.4 A steel or aluminum bead lock may be used on the right front and right rear wheels only, and
may be mounted on the outside of the wheel so long as it does not add over three-quarters
(3/4) of an inch to the overall width of the wheel.
11.1.5 Homemade mud caps are not allowed.
11.1.6 Wheel covers are allowed on right side wheels only. Inner mud plugs are permitted.
11.1.7 Wide five wheel adaptors are not allowed.
11.1.8 Steel or aluminum spacer between hub and wheel is allowed, but overall width of racecar
cannot exceed 78 inches (see Rule 4.19).
11.1.9 Aluminum or steel lug nuts are permitted.
11.2.1 American Racer G60 or KK704 stamped or non-stamped tires are permitted. All non-stamped
tires must be asphalt (no dirt).
11.2.2 Softening is not allowed. Solvents of any kind are not allowed. Altering tires with any
components or chemicals which alter the manufacturer’s baseline-settings of the tire is not
11.2.3 Grooving and/or siping is permitted.
11.2.4 All sidewall markings must remain visible at all times. Buffing or removing of the compound
designations is not allowed.
11.3 Tire Testing Procedures:
11.3.1 Random GC (gas chromatography) scans will be performed to identify illegal substances. A GC
scan should always be a peak in 19-20 minutes. If there is no peak, the driver will be
disqualified. Driver may protest the GC scan results and request a mass spec test at the cost to
the driver (usually around $300). The mass spec test will reveal exactly what substance was
used. The main peak of the tire should never be in half.
11.3.2 Traces of Toluene on either test is automatic disqualification and will result in loss of all points
accumulated for the season, forfeiture of all prize money earned for the event and a $3,000
fine (in addition to any other penalties). Driver will not be allowed to compete in any USMTS
event again until fine is paid in full.
11.3.3 It is strongly recommended that all drivers use only soap and water. Baking tires will not
eliminate traces of illegal substances. The USMTS will aggressively test for illegal substances
and will levy severe punishment for infractions.
11.3.4 Three samples will be retrieved from each tire in different spots and sent to a lab for testing.
Samples will be sealed in a bag and the driver must sign the bag. All tire testing results shall be
posted publicly at the registration station with the car number on the test sheet.
ARTICLE 12: BRAKING SYSTEM
12.1 Must be operating on all four wheels and must lock up all four wheels during inspection.
12.2 Must have caliper and rotor on all four wheels. Vented rotors are required on front wheels.
12.3 Electronic brake actuators are not allowed.
12.4 Calipers may not be lightened and must be OEM
12.5 Steel or aluminum single-piston OEM-type calipers are allowed.
12.6 Rotors must be steel and may not be lightened or drilled. Rotors may be re-drilled for different
bolt patterns or larger studs.
12.7 Front-to-rear brake bias is allowed.
12.8 Brake shut-offs are not allowed.
12.9 Brake lines must be visible.
12.10 Must maintain minimum OEM dimensions for hubs, rotors and calipers.
ARTICLE 13: DRIVE SHAFT
13.1 A loop is required and must be constructed of at least one-quarter (1/4) inch by two (2) inch
solid steel. Loop must be mounted no more than six (6) inches from the front of the drive shaft
tube. Alternatively, two (2) loops of one-quarter (1/4) inch by one (1) inch solid steel fastened
to cross member are allowed.
13.2 Must be painted white.
13.3 Must be made of steel.
ARTICLE 14: TRANSMISSION
14.1 OEM three-, four- and five-speed and automatic production-types allowed.
14.2 “In and out” boxes are not allowed.
14.3 Must all be clutch-operated.
14.4 Bert and Brinn transmissions are allowed. With motor running and racecar in stationary
position, driver must be able to engage racecar in gear and move forward, then backward, at
time of inspection.
14.5 Clutch must be inside of bell housing for OEM production-types.
14.6 One (1) forward gear and one (1) reverse gear must be in working order, plus a neutral
position, and must be able to be shifted by driver.
14.7 Clutch-type transmissions must be equipped with an explosion-proof steel bell housing.
Aluminum must be SFI-approved (GM bell housing is not SFI approved).
14.8 Automatic, Bert or Brinn transmissions must have a guard two-hundred seventy (270) degrees
around flex plate or flywheel, and must be constructed of at least one-quarter (1/4) inch steel.
Alternatively, automatic transmissions may utilize an SFI-approved aftermarket guard.
14.9 All racecars must have the capability of starting without being pushed or pulled.
ARTICLE 15: REAR-END
15.1 Any passenger car or truck type is permitted. Aluminum is not allowed except lowering blocks,
axle cap and drive plate.
15.2 Quick change rear-ends are permitted: Steel tubes only; ten (10) inch ring gear only; pinion and
carrier bearings must be tapered; titanium is not allowed; wide-five wheel patterns are not
allowed; aluminum spools are permitted. Magnesium will be permitted until such date that the
cost increases, at which time only magnesium rear-ends purchased prior to that date will be
permitted and must have original serial number.
15.3 Cambered rear-ends are not allowed. One-piece drive flange only.
15.4 Traction devices are not allowed (includes Gold Track, True Track or similar type components).
ARTICLE 16: ENGINE
16.1 Must be able to be used in conventional passenger car without alteration. Motor mounts may
not be removed or altered. Castings (includes block, heads and intake) and fittings may not be
changed. Machine work on outside of engine, or on front or rear of camshaft, is not allowed.
Note: Beginning in 2012, racecars utilizing lightened blocks (removal of material from inside
and/or outside) must add twenty-five (25) pounds of additional weight in front of the midplate.
16.2 Total “dry sump” systems are not allowed. “Wet” system must be operative.
16.3 Modification of cooling system is permitted. Radiators and oil coolers may not protrude above
16.4 Any American make may be used. Rear of engine (bell housing flange) must be mounted at
least seventy-two (72) inches forward from the center line of the rear axle – NO TOLERANCE.
16.5 Offset must be within two (2) inches of centerline of front cross member.
16.6 Must be a minimum of eleven (11) inches from ground to front center of crankshaft.
16.7 Steel blocks only –aluminum and/or titanium are not allowed.
16.8 Overflow tubes must be directed toward the ground and inside the frame rails.
16.9 Radiator must be mounted in front of engine.
16.10 Wiring elements must be accessible for technical inspection. Any racecar advancing spots and
missing will be subject to disqualification.
16.11 Tri-Y headers are permitted, but cannot contain stainless steel.
16.12 Exhaust system and/or mufflers must be mounted in such a way as to direct spent gases away
from the cockpit and away from areas of possible fuel spillage.
16.13 Mufflers may be required at track's discretion.
16.14 Roller cams are permitted.
16.15 Engine type shall determine overall racecar weight (see Rule 17.2) and spoiler height (see Rule
16.16 Flat Tappet/Steel Head Engine:
16.16.1 Stock diameter lifters only. Mushroom lifters are not allowed.
16.16.2 Stud girdles and shaft rockers are permitted.
16.16.3 Engine components must be of matching manufacturers (i.e. Chevy for Chevy).
16.17 BRODIX Aluminum Spec Head Engine:
16.17.1 Approved product numbers for the BRODIX Aluminum Spec Head are as follows:
SP CH USMTS/USMTS (Chevrolet)
SP FO USMTS/USMTS (Ford)
SP MO USMTS/USMTS (Mopar)
For more information, call BRODIX at 479-394-1075 or visit www.brodix.com online.
16.17.2 Removing, relocating, grinding, polishing or defacing of any cast letters or numbers is strictly
16.17.3 May be angle milled, but valve angle must remain within one (1) degree of original
16.17.4 Valve guides must retain original angle and spacing as manufactured. Valve guides may not be
tapered, thinned or shortened whatsoever. Minimum valve stem diameter must be 5/16 (.310)
16.17.5 Absolutely no welding or adding material of any kind.
16.17.6 Removal of material is not allowed, except for pushrod clearance. Factory CNC chamber may
not be altered in any way.
16.17.7 Absolutely no enlarging, relocating or other altering of any bolt hole, dowel hole or threaded
hole, except to spot face bolt holes after angle milling.
16.17.8 Heli coils may be used for repairs.
16.17.9 Absolutely no grinding or polishing of any kind anywhere on the casting, except for pushrod
16.17.10 Internally-repaired BRODIX Aluminum Spec Head must be recertified by BRODIX.
16.17.11 BRODIX Aluminum Spec Head checking fixtures will be used by officials to check all
specifications and dimensions.
16.18 CT525 Crate Engine:
16.18.1 GM Performance Parts (GPP) factory-sealed CT525 Chevy small block crate engine (Part No.
19171821): includes aluminum block and heads, hypereutectic aluminum pistons, nodular iron
crank and hydraulic roller tappet camshaft. See www.karlperformanceparts.com for more
16.18.2 Must have “Crate” sticker on racecar. Any driver running a sticker designating a different
engine with a “Crate” sticker will be disqualified with loss of points and earnings for that
16.18.3 Must be unaltered and sealed from factory at appropriate points (intake, head, timing chain
cover and oil pan) with approved GPP break-off bolts. Any altered, damaged or missing GPP
break-off bolts will result in driver being disqualified from that event, loss of all track and
national points accumulated up to, and including, the date of the offense, a $5,000 fine and a
one-year suspension from all USMTS events.
16.18.4 Official and/or promoter reserves the right to exchange a crate engine for a similar crate
engine of the same model (provided by the USMTS) at any time with any driver utilizing a crate
ARTICLE 17: WEIGHT
17.1 The overall weight of the racecar shall be measured at the conclusion of an event with the
driver in the cockpit, wearing complete racing apparel.
17.2 Overall Racecar Weight:
17.2.1 If utilizing a Flat Tappet/Steel Head Engine with a 23-degree valve angle and mushroom lifters
(see Rule 16.16) or BRODIX Aluminum Spec Head Engine (see Rule 16.17), the overall weight of
the racecar must be a minimum of two-thousand four-hundred (2,400) pounds.
17.2.2 If utilizing steel or aluminum heads with a 23-degree valve angle, the overall weight of the
racecar must be a minimum of two-thousand four-hundred fifty (2,450) pounds.
17.2.3 If utilizing steel or aluminum raised runner heads, or less than a 23-degree valve angle, the
overall weight of the racecar must be a minimum of two-thousand five-hundred (2,500) pounds.
17.2.4 If utilizing the CT525 Crate Engine (see Rule 16.18), the overall weight of the racecar must be
a minimum of two-thousand two-hundred (2,200) pounds.
17.3 If utilizing aluminum heads other than the BRODIX Aluminum Spec Heads, racecar must have a
minimum fifty (50) pounds of weight in front of mid-plate.
17.4.1 May not be mounted in cockpit, or outside of body or hood area.
17.4.2 Must be securely mounted, painted white and clearly marked with the car number.
17.4.3 Must be attached with at least two (2) one-half (1/2) inch bolts.
17.4.4 May not be attached to rear bumper.
ARTICLE 18: SAFETY
18.1 It is recommended that each racecar have built-in fire extinguishing equipment, but cannot be
of the dry powder type (must be Halon 1211 or equivalent).
18.2 Drivers should have in their pit area as part of their equipment, at all times, a fully charged dry
chemical, Halon (or its equivalent) fire extinguisher. Ten (10) or thirteen (13) pound fire
extinguishers are highly recommended.
18.3 Driver must wear required helmet, fire suit and five-point safety harness whenever the racecar
is on the racetrack. This includes during track packing, warm ups, hot laps and races.
18.4 Helmets are mandatory and must be certified Snell SA2000, SA2005 or SA2010 Standard or SFI
Spec 31.1A, 31.1/2005 or 31.1/2010.
18.5 Helmet must accompany driver and racecar at time of inspection.
18.7 Complete one- or two-piece fire suits of a flame retardant nature are mandatory. A fire suit
certified to SFI Spec 3.2A/5 is strongly recommended.
18.8 SFI-approved fire-resistant gloves and shoes are mandatory. Gloves and shoes certified to SFI
Spec 3.3/5 is strongly recommended. Fire resistant socks are strongly recommended.
18.9 The use of a five- six- or seven-point driver restraint system (safety belts, sub-belt and
shoulder harness) is required. Factory-type shoulder belts or straps are not allowed. The use of
a seven-point driver restraint system certified to SFI Spec 16.1 or 16.5 is strongly
18.10 Metal to metal buckles are required on shoulder and seat belts.
18.11 Shoulder harness must be mounted securely to the roll cage.
18.12 Where the belt passes through the seat edges, a grommet must be installed, rolled and/or
padded to prevent cutting of the belt.
18.13 Driver restraint system must be less than three (3) years of age past the date of manufacture.
It is recommended that the driver restraint system be no more than two (2) years past the date
18.14 Full-size window net mounted in the left side driver’s window opening is required. Window net
mounts must be welded to the roll cage. All bars around the driver must have approved roll bar
padding. Approved racing arm restraints are recommended. Must be certified to SFI Spec 27.1.
18.15 Fire-resistant safety neck collars are mandatory.
ARTICLE 19: CLAIMING PROCEDURES
19.1 Any driver possessing a valid USMTS license may have the opportunity to execute a claim. All
drivers, licensed or not, are subject to being claimed.
19.2 Any driver in the “A” Main is eligible to claim the shocks or MSD ignition box of another driver’s
racecar in the “A” Main.
19.3 Claims must be made within five (5) minutes of the completion of the “A” Main. Claimed items
must be removed at the racetrack and within one (1) hour after claimed driver accepts the
19.4 Immediately following the conclusion of the “A” Main, without returning to his/her pit
location, driver making claim must drive racecar, under its own power, directly to the
designated claim area. Claiming driver shall select from eligible racecars in the “A” Main, and
must declare that choice to the official overseeing the claim area. If the claiming driver
decides at that time that he/she does not wish to execute the claim, he/she will nonetheless
be charged one claim on his/her claim card. If multiple drivers declare an intention to claim,
the driver finishing farthest back in the “A” Main will select first.
19.5 Claiming driver must present cash to official overseeing the claim area at the time the driver
declares intention to claim. The cash price of the claim shall be one-hundred dollars ($100)
each for shocks or two-hundred fifty dollars ($250) for MSD ignition boxes. Drivers claiming
shocks may claim one (1) or more shocks during a single claim.
19.6 Driver is permitted one (1) claim per event, regardless of the outcome of that claim.
19.7 Only drivers and officials are permitted in the designated claim area. Any other participants
associated with that racecar that enter the claim area will be subject to disqualification, fine
19.8 Only a driver may claim, and only the claimed driver may agree to accept or refuse the claim.
The first statement of acceptance or rejection of the claim by the claimed driver is binding.
19.9 Any driver refusing to accept a claim will forfeit all cash winnings and contingency awards for
that event. Any driver refusing to accept a claim will forfeit all USMTS points (national,
regional or otherwise) accumulated up to, and including, the event at which the claim was
made. Furthermore, driver will forfeit the privilege to make a claim for a period of one (1)
year from the date on which the claim was refused.
19.10 Sabotage of claimed parts will result in driver being suspended from all USMTS events for
fourteen (14) days and until a $1,000 fine is paid and received at USMTS headquarters. Driver
will also forfeit all USMTS points (national, regional or otherwise) accumulated up to, and
including, the event at which the sabotage occurred. Furthermore, driver will forfeit the
privilege to make a claim for a period of one (1) year from the date on which the sabotage
19.11 Driver may claim a maximum of three (3) times during the calendar year.
19.12 The USMTS reserves the right to disallow any claim at their discretion.
19.13 At their discretion, officials reserve the option to claim the shocks or MSD ignition box of any
racecar. Officials may exchange MSD ignition boxes at any time.
19.14 Disqualification shall not affect a legal claim. Claimed parts will be removed and transferred
prior to any penalties being assessed.
APPENDIX A: BODY SPECIFICATIONS