2026 Pro Sportsman Series

INTENT - This class is designed for race car drivers of all ages to learn and experience a full-sized race car on a budget. The Pro Sportsman division allows a wide range of cars to compete from hobby stocks to old tour cars and the class is designed to utilize the large amount of out of date used equipment available in the motorsports marketplace today. Drivers 12 and up are eligible for this class. Drivers under the age of 12 must submit a resume for the approval process.

Standard Chassis - Hobby Stock OEM style or perimeter late model style with stock from clip, 5” minimum coil springs with an OEM steering box.

Standard Engine- factory sealed 602 crate engines, must run an MSD rev limiter and will be required to run a track provided 6,000 rev chip at all times. (Note-4-barrel carburetor allowed.)

Standard Weight – 2,825lbs with 58% maximum left side weight prior to qualifying and any race.

Common rules:

Engine set back – engine set-back rule is up to 2" back, at the center of the forward most spark plug hole to the center of the upper ball joint on the same side. Wet sump engines only.

Body - Bodies may be made of steel, aluminum or fiberglass, Front half must be ABC style, roof must be ABC style of an OEM roof (entire body may be ABC style, rear ¼ panels may be fabricated and built in an outlaw style). Tail section must be fully enclosed.

No under body air deflectors or wings of any kind. Teams are allowed to mount two ½” tall roof rails running front to rear on the roof of the car, but these rails are not allowed to extend down the rear window or onto the deck lid. No passenger windows are allowed, maximum for the vent window along the top of the door will be 12 inches and must go 90 degrees from the top of the door up to the A-post. No fans, ducts or hoses to the rear brakes or tires, no holes or hoses are allowed through the interior sheet metal.

Maximum Rear deck height is 34 ½’. spoiler must be maximum of 6 ½ x 60’ wide and made in one piece. FRONT OVERHANG (max): 46” from front axle to front of nose on centerline. REAR OVERHANG (max): 47” from base of spoiler at centerline to rear axle centerline. Maximum rear body width is 79” wide.

Suspension - cars may run aftermarket suspension, aftermarket steel upper and lower control arms allowed, Any style center link. All springs must be minimum 5” spring. Rear suspension will be leaf spring, 3 link or truck arm. (Note, 3 link frame must be 3 straight solid links. 3-piece sway bar okay. Front spindles, rotors and single piston calipers must be steel.

Chassis - OEM hobby stock factory style chassis are permitted. Fabricated perimeter late model chassis permitted with stock front clip or fabricated front clip. Fabricated tour style chassis permitted with rack and pinion steering (see wight penalty area for more details), fabricated lower a-arms and 5” springs. No coil overs, minimum spring size is 5”.

A full roll cage built from a minimum 1 ¾ x .095 round tubing and must have a complete set of driver side door bars and at least and "X" in the passenger side. Minimum square tube size 2x3 (note only support bars can be smaller than 1 ¾’).

Wheels & Tires - Wheels must be 8" or less, and must be steel. Tires must be the Hoosier

8.0-15/970 treaded tire. All tires must be purchased from the track. Tires MUST NOT be cut, soaked or modified in any manner whatsoever. Used tires that were purchased from the Madera Speedway are ok to use.

Ride Height – There is a 4” ride height on all frame and body parts.

Fuel - All cars must run Sunoco 110 Purple track fuel or pump gas 91 octane (OEM Hobby Stocks may run E85 Fuel)

Drivetrain- 7.25” minimum clutch, with any Steel or aluminum bell housing that is SFI approved. transmission must be 3 or 4 speed OEM transmission (See weight penalty section for Jerico, Brinn, Bert, etc. as well as clutches smaller than 7.25”). All gears must be functioning. No reverse mount starter setup. Drive shaft must be steel.

REARENDS – Quick Change ok, rear loading gears only. Minimum ring gear size is 10” outside diameter for quick change rear ends. No camber snouts. No gear driven lockers. Spring style locker allowed only. (Note - quick change 3 link rear end cars must only have 3 solid straight links, no springs, no rubber biscuits allowed).

TRACK WIDTH & Wheel Base - All competing cars will not exceed 78”-inch track width, it will be measured from the bulge outside to outside of the front tires at the spindle height. Minimum wheel base is 104". It will be measured from center of front and rear hub.

EXHAUST SYSTEM – Mufflers are mandatory. Any header under the maximum header cost of $500.00 retail from the manufacturer. Any muffler may be used provided maximum sound level 95 dB at 100' (Sound level will be strictly enforced). Dual exhaust OK. Exhaust must extend behind the driver's seat, exhaust may dump behind the driver downward under the car, or out of the passenger door. Any size outlet OK. Exhaust must be securely attached to the bottom of the car.

SHOCKS - Any steel nonadjustable, none gas charged shock (when it is compressed it must stay compressed), all parts must be steel. Aluminum rod end on shaft end ok. NO bump stops or coil overs. Eliminators are allowed with a 5” minimum spring.

SPRINGS – One spring per corner for a maximum of four springs total. Minimum spring size is 5” in diameter. No tapered or barrel springs, spring must remain the same diameter from top to bottom of the entire spring and spring coil thickness must remain the same from top to bottom of the spring. No rear preloaders. No leaf spring birdcage, and front and rear leaf springs must be solid mounted to chassis.

BRAKES - Only single piston steel OEM style brake calipers allowed. After market brake rotors allowed. Front spindles, rotors and single piston calipers must be steel.

Steering– Full size OEM steering box unless rack and pinon is factory for a hobby stock year for make and model on package and mounted in factory location. Rack and pinon can be used on fabricated chassis with weight penalty (see weight penalty section). Any style center link okay.

Equipment That May be Used with a Weight Penalty –

Fabricated Front Clip – Add 25 pounds for fabricated front clip.

Straight Rail Chassis – Add 50 pounds for straight rail chassis cars.

Rack and Pinion Steering for fabricated chassis – Add 50 pounds for rack and pinion steering.

Repaired/Rebuilt 602 Crate Engine – Add 75 Pounds (Note, 602 engines can only be repaired by the track approved engine builder)

Open Engines – Add 125 pounds to standard weight. All open engines must be wet sump and may be any cubic inch. (Note-4-barrel carburetor allowed.) Open engine cars must run an MSD rev limiter and will be required to run a track provided 7,000 rev chip at all times. Note, 604 crate engines run at the open engine weight.

Non-Standard Transmission and/or clutch – Add 50 pounds when using the following non-standard transmissions, Jerico, Brinn, Bert, Richmond, Falcon, and Auto Gear. (transmissions must have manufactures markings) or clutch that is smaller than 7.25”. 50 pound penalty for either a clutch that is smaller than 7.25” or a non-standard transmission. Example, if you run a Jerico with a 5.5” clutch the penalty is 50 pounds total. If you run a Jerico with a 7.25” clutch the penalty is 50 pounds, if you run a standard transmission with a 5.5” clutch the penalty is 50 pounds.

Exceptions for Hobby Stock OEM Style Cars – May run open engine with no weight penalty, may run rebuilt 602 with no weight penalty, may run stock 602 with no RPM limits. May run non-standard transmission or clutch with no weight penalty. May run E85 Race Fuel.

PRO SPORTSMAN RULES - 2026