#39730 RUSH SPORTS RACER (RSR) (REGIONAL ONLY CLASS)

(713) 937-0000
Website: rushautoworks.com
Email: info@rushautoworks.com
B. Rush Sports Racer (RSR)
Only Rush Race Cars manufactured by Rush Auto Works Inc (RAW). and maintained in their original spec condition are
eligible for competition. All cars must operate using Rush Auto Works mechanical parts available from Rush Auto Works
aftersales department. All preparation, maintenance, and service of Rush Auto Works cars must be provided in
accordance with official Rush Auto Works documentation and technical bulletins.
2. Homologation
Rush SR chassis are homologated with SCCA, but require a homologation certificate from SCCA, which can be
obtained by contacting the Technical Services Department. Cars will only receive a certificate if they can show they
meet the fuel cell requirement below.
3. Fuel Cells
If the car has an early blue plastic fuel cell, it must be completely covered in metal per section 9.3 of the GCR. This
option may go away in 2027. The only other allowed fuel cells are either the side mounted or behind the seat units
produced by RAW.
4. Minimum Weight
Weight with Nankang AR-1 tires: 1350 lbs
Weight with Hoosier W3 wet tires: 1325 lbs
5. Ballast
A. To reach minimum weight, competitors are permitted to attach ballast to the chassis on the 1-1/2" flat bar rails in
front and behind the driver's seat.
B. Any weight added shall be secured by a minimum of two (2) 8mm bolts with Ny-lock nuts. All bolts shall be at least
SAE grade 5 or metric grade 8.8 or stronger.
C. Ballast must be clearly marked with the car number and must be positioned to maintain proper weight distribution.
6. Setup
Maximum camber is -2.6 degrees and minimum ride height is 17.75” measured from the ground to the top of the front
bar of the chassis where the chassis tag is located.
7. Bodywork & Aerodynamic Devices
A. Only bodywork and aerodynamic devices, body panels, wings, splitters, and diffusers as originally manufactured and
purchased from RAW shall be permitted. No bodywork component or aerodynamic device shall be substituted with any
item not manufactured by RAW and in original configuration as supplied by RAW. No part of the bodywork may be
worked upon or modified beyond what is specifically permitted. All parts must comply in terms of size, look, and material
to the original parts.
B. It shall be allowed to finish the RAW-supplied body panels by sanding, surface preparation, painting, or wrapping. The
three slots in the front fender upper surfaces may have the forward faces removed to allow air to escape the front wheel
area.
C. The front splitter angle may be adjusted using the front splitter stays. Additional horizontal bracing on the splitter
braces is permitted. The optional RAW-manufactured high downforce front splitter and billet splitter mounts are
permissible for all competition. Splitter mounts must remain unmodified in their original mounting positions.
D. The rear wing may be adjusted only using one of the six adjustment holes as provided on the RAW wing adjuster
plates. No modification to the wing element, end plates, or wing mounting brackets including their mount to the
bodywork shall be permitted. No other bodywork or aerodynamic device modifications shall be permitted.
8. Chassis and Frame
No chassis modifications shall be permitted under any circumstance. All members and components of the front crash box,
welded chassis frame, and rear crash structure must remain in original configuration as supplied by RAW. It is not
permitted to carry out any strengthening work on the frame (welds, brackets, etc.) without the authorization of RUSH
Auto Works Inc. No modification to the floor, undertray, or rear diffuser is permitted.
9. Suspension Components and Wheel Bearings
A. Only suspension, wheel hubs, brake discs and calipers, shocks, steering rack and column, pedal box, differential
assembly, shock absorbers, springs, and anti-roll bars as originally manufactured and purchased from RAW shall be
permitted. No suspension component mentioned in section shall be substituted with any item not manufactured by RAW
and in original configuration unless specifically permitted.
B. Only springs as supplied by RAW are permitted and can be run in any configuration.
C. The shock absorber must remain stock using only components supplied by RAW. The length of the shock absorber may
be adjusted using the body lock nut on the shaft. The perch height for the spring may have its position adjusted. The
compression and rebound valve settings may be adjusted. The shock absorber can use any viscosity shock oil. The internal
valve discs can be adjusted in quantity using RAW-supplied discs only. The optional shock N2 chamber systems are
permissible for all competition.
D. Wheel bearings must remain stock. No modification of the bearing or seal is permitted.
10. Permitted Adjustments
The front and rear toe alignment may be adjusted via the stock track rods. The front and rear camber may be adjusted by
addition or removal of 0.5mm, 1.0mm, and 2.0mm camber shims as supplied by RAW. The front and rear anti-roll bars
may be adjusted by position of the ARB anchor position on the ARB. The ARB may be disconnected. The front and rear
ride heights may be adjusted. The corner weights may be adjusted through permitted means as contained herein.
11. Brake System
Only brake components as originally manufactured and purchased from RAW shall be permitted. This entails Brake Pads,
Rotors, Calipers, ETC. The use of OBP Master Cylinders is mandatory but can be sized from ¾ inch to 1 inch. Brake fluid
type is open but must meet minimum DOT 4 specification.
12. Engine
A. Only engines as originally manufactured and purchased from RAW shall be permitted. The RAW engine unit is sealed.
Tampering with or removal of the engine seal by competitor or anyone other than RAW is not allowed. To ensure engine
integrity, seals are applied by RAW directly. Any necessary engine maintenance work/engine replacement is the direct
responsibility of RUSH Auto Works Inc.
B. Only RAW factory or Denso OEM starters are permitted inside the Rush Spec Series. Participants in violation of this
section will be disqualified until the violation has been replaced or fixed.
13. Engine Control Unit.
The engine ECU may at no time be tampered with or re-flashed other than by RAW. ECUs may be inspected for flash
updates by tech. ECUs which have been flashed shall be confiscated and the competitor disqualified from the event. In
agreement with Event Officials, ECUs (engine control units) may be replaced at any time during the event.
14. Transmission and Driveline
A. Only transmission and driveline components as originally manufactured and/or purchased from RAW shall be
permitted unless specifically addressed here. No transmission or driveline component shall be substituted with any item
not manufactured or supplied by RAW and in original configuration. In agreement with Event Officials, the Series reserves
the right to pick the transmission unit and send it to RUSH Auto Works for conformity checks.
B. The front sprocket may be adjusted from 14-tooth to 15-tooth Sprockets. The rear sprocket must remain a 44-tooth
sprocket.
C. The differential may be adjusted to have 1, 3, or 5 clutch contact faces per side (20%, 60%, or 100%). The differential
may be used in the 1.5 or 2.0 differential ramp position.
15. Wheels and Tires
A.
Dry: Nankang AR-1 185/60R13 Front and 205/60R13 Rear
Wet: Hoosier 44421W3 Front and 44426W3 Rear
B. The use of only ONE set of dry tires shall be permitted per race weekend. This rule shall apply from the first qualifying
session of an event weekend. Drivers may use new or scrub tires during practice. Tires shall be marked following the first
qualifying session of the event weekend and shall be used for all sessions of the event thereafter. If deemed damaged,
authorization from the Chief of Tech may be granted for use of a replacement tire for the remaining sessions of the event.
16. Cockpit
No modification can be made to the pedal assembly beyond permitted adjustments to master cylinder sizing. It is not
permitted to use rails, brackets, and any kind of non-original material to change the seat position. The use of alternative
mirrors is permitted.
17. Mandatory Safety Equipment
• Camber Plate Upgrade
• Case Saver
• Clutch Switch or equivalent
18. Data Acquisition and Telemetry
Only Aim MXM, MXL, or MXS data systems are permitted. It is permitted to add data sensor packs only sold by RAW
Aftersales. Telemetry systems different from the original or which provide redundant data to the original system are not
permitted. All data (telemetry, video logger) must be always available to Race Officials. Race officials reserve the right to
download and disseminate Aim data from any competitor at will. It is not permitted to reset the data acquisition system
at the end of official practice, qualifying sessions, or races.
19. Miscellaneous Permitted Additions
It is permissible to add a chain guard to protect the engine bay from lubricant splatter. The optional RAW-manufactured
wind deflector is allowed.
20. Transponders
The transponder must be located in the position specified by RUSH Auto Works technical documentation (see technical
bulletin for location diagram).”