Autocross

Friday, June 13th

For those interested in the agility and handling of their Mustang, we recommend the RMMR autocross. This timed event is sure to test the handling of your Mustang and your skills as a driver. The goal is to make it through a course of traffic cones as fast as possible without hitting any.

This event takes place in a large open parking lot outside PPIR, and away from barricades and hazards. Cars go one at a time. Autocross is one of the safest and easiest ways to dip your toe into racing your car. Check out this helpful and in-depth article on what to expect at an autocross.

You can sign up to drive more than 1 registered vehicle as long as the 2nd registered vehicle is not in the same class as the 1st vehicle. Doing this will allow the driver to only be eligible for a trophy when driving the 1st registered vehicle.

All that have registered to participate in the AutoCross will need to check in with registration and pick up their packets. Included in the packets will be your car number that will need to be placed on the vehicle running in the AutoCross.

The AutoCross will be held at the “outside west parking lot” at PPIR. The limit is 150 drivers. Each driver will complete a maximum of four (4) timed runs. SCCA safety regulations will be enforced. Helmets will be required on the course for every driver and passenger (Snell 2000 or newer).

Autocross participants must bring their AX Confirmations (to be emailed May 2025) and turn in their completed Technical Inspection Form before participating in the AX. There will be no additional or on-site Tech Inspections to participate in the Autocross, but all AX participants will need to download and fill out the Autocross Technical Inspection Form. Those that wish to walk the course will be allowed to do so up to start of the Driver’s Meeting (9am) at the West Lot. Autocross ACE awards will be presented at noon during the Show n’ Shine on Bennett Avenue.

Rules & Requirements

• The autocross will be held at the “outside west parking lot” at PPIR.
• There will be two sessions of the autocross (morning and afternoon).
• The limit is 200 drivers. There will not be a waitlist for the autocross.
• Each driver will complete a maximum of four (4) timed runs.
• Autocross trophies will be awarded Saturday during the Show n’ Shine along Bennett Ave.
• SCCA safety regulations will be enforced.
• Helmets will be required on the track for every driver and passenger (Snell 2000 or newer).
• Only two drivers are allowed per car.
• Autocross / Open Track participants must bring AX / OT Confirmations (to be mailed May 2025) and pass technical inspection before participating in the AX or OT.
• Cars will be run together in the same classes.
• Classes may run in one of two morning or one of two afternoon sessions.
• Male/female two driver cars will be split between sessions (usually both in the morning or both in afternoon). Same sex two driver cars in the same class are in the same session.

RMMR AX Event Classifications

Stock Classes (ES, ESL, FS, FSL, LS, LSL): Mustang as produced with options available year of manufacture. One modification allowed over stock to suspension or gear ratio. Suspension must retain original configuration and ride height. Up to two modifications allowed to engine over stock.

No power adders (eco boost excepted). No autocross, road race, or drag race tires with wear indicators of less than 200 allowed. Allowed modifications are as follows:

Suspension – higher rate springs, sway bars, wheels, and traction bars. One modification only.

Shock absorbers are not considered a modification. No modification is allowed that does not adhere to the original suspension design and mounting points. Devices that allow for suspension alignment tuning are allowed. Upgraded brake system and steering systems that were not available for the model year are not allowed.

Gear ratio – any gear ratio that was available during the model years covered by the class.

Engine – intake manifold, carburetor, throttle body, air cleaner, exhaust headers, and chip upgrade. Two modifications only.

Transmission – Transmission swaps/replacements are allowed only for transmissions that were available during the model year covered by the class.

Street Prepared Classes (ESP, ESPL, FSP, FSPL, LSP, LSPL): Additional modifications allowed over stock. Car must be titled, have current license plates, be street driven. No major lightening is allowed. Car must have a full interior. The following models due to their superiority over the standard offerings of their model year are considered as Street Prepared cars:93-01 Cobra (non supercharged), Bullitt, 03 –04 , 21-22 Mach 1, 2012-13 Boss 302, 2011 – 2024 GT, 06 – 25 Shelby GT/GTH/GT350 (non supercharged), and other non supercharged Shelby, Roush & Saleen models. Suspension must retain original configuration and mounting points. (lowering springs and early Shelby A-arm modification are allowed). No power adders (turbochargers/superchargers) are allowed unless stated herein. Original supercharged 65-68 Shelby cars are allowed in ESP & ESPL. Original turbocharged 4 cylinder cars are allowed in FSP and FSPL. Engine replacement swaps are allowed for like type engines.

No autocross, road race, or drag race tires with wear indicators of less than 200 allowed. Allowed modifications are as follows:

Suspension – higher rate springs, sway bars, lowering kits, wheels, and traction bars. Shock absorbers are not considered a modification. No modification is allowed that does not adhere to the original suspension design and mounting points. Devices that allow for suspension alignment tuning are allowed. Upgraded brake system and steering systems that were not available for the model year are not allowed.

Gear ratio – any gear ratio that was available during the model years covered by the class.

Engine – intake manifold, carburetor, throttle body, air cleaner, heads, camshaft, lifters, rocker arms, compression ratio, stroker kits, pistons, oil pumps, exhaust headers, and chip upgrade.

Ignition system, radiator, water pump, and alternator upgrades are not considered a modification.

Transmission – Transmission swaps/replacements are allowed.

Street Modified Class (ESM, ESML, FSM, FSML, LSM, LSML): Any street legal modifications allowed over street prepared rules. Car must have a full interior. Power adders (turbochargers/superchargers) allowed. The following supercharged models are classified as Street Modified cars: 03 – 04 Cobra, Cobra R, 07-25 GT500 & GT500KR Shelby, GT 350SC, 350R Shelby and Supercharged Roush and Saleen models. Car must be titled, have current license plates and be street driven. No autocross, road race, or drag race tires with wear indicators of less than 200 allowed.

Unlimited Class (CP, CPL): Mustangs with Unlimited modifications and tire selection. (if your car has tires with a tread rating of less than 200 you will be in this class).

Ford GT/Cobra Class (CC, CCL): Any original Shelby or Ford powered replica Shelby Cobra. Any Ford GT.

Non-Mustang Class (NM, NML): Any FOMOCO non-Mustang (Python, Cougar, T-bird, etc.) or FOMOCO powered vehicle also MACH E and other electric/hybrid vehicles.

Classification notes:

1. Power adders are defined as superchargers and turbochargers.
2. If a vehicle has a NOS system the bottle must be removed from the car prior to the autocross.
3. All classes except Unlimited must use DOT tires with a tread wear rating of 200 or greater. Autocross, drag or race tires are only allowed in the unlimited class.
4. Helmets of a Snell 2000 or later rating are required of all drivers and passengers. (Helmets will be inspected. Damaged helmets will not be permitted.)
5. Drivers and passengers need to be a minimum age of 18 years of age with a valid driver’s license.
6. All cars shall be required to have seat belts, be in good working order, and to pass a technical inspection prior to the event sessions.
7. Only two drivers are allowed per car. No driver may drive more than one car during the event.
8. SCCA rules and regulations other than noted above will apply. Final car classification will be by the discretion of the event stewards.
9. If modifications are made to your vehicle or drivers after your registration, you must inform the RMMR registration to ensure your class didn’t change, vehicles classed wrong may result in DNF times. Please notify us by June 1 of any changes to your vehicle or drivers to ensure you are classed properly for all your runs to count.