Rules/Forms

1 1/4" minimum material diameter with wall thickness of [13 Ga.] .095". It fastens to the halo @ or in front of seat headrest. Out and down to top door bar or angle back to the top door bar or B bar that goes up to the halo One horizontal bar from extra bar to B bar. Does not have to be 1 1/4". All cars need one in 2024.

4-15-23 All cars with molded in diffusers on the back of roof are allowed for 2024. In 2025 there will be NO diffusers allowed.

4-15-23 The horizontal bar in the new intrusion/halo bar is mandatory. Must be installed by June 1 2024.

1/18/24
Wissota is aware of some new shock technology this is coming out. We at Wissota will not be allowing this technology in our Late Model Class. We will be releasing the rule wording soon.

2024 if needed

2024 if needed

2024 if needed

2/7/24
Front fender tops. Max. of 4" showing outside of hood on both sides.

Rear quarter panel tops. Max. of 4" showing outside of trunk on both sides.

All engine options must follow the exhaust / header rule on page 80 rule [H] of the 2024 Wissota rule book.

1/31/24

No light weight rear end gears allowed. [polished gears allowed]
No light weight / gun drilled axles allowed.

2024 if needed

2024 if needed

ST. CLOUD, MN (December 18, 2014) – A diagram which outlines the specifications for frame measurements in the Modified and Midwest Modified divisions is available. Shown are the legal dimensions for the 1968 to 1972 Chevelle stub/frame. If your frame does not meet these measurements, please consult your chassis builder.

Officials of WISSOTA, USRA, and USMTS have produced a video tutorial which will help drivers, chassis builders and tech officials properly measure race car frames to ensure they meet 2015 rules and beyond. The following video helps to explain how Modified and Midwest Modified frames will be measured to ensure they comply with WISSOTA rules. If you have any questions, please contact Bill Engelstad at (218) 262-5823 or (218) 208-7844 or email him at bill@wissota.org.

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 all events, and by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND OR REGULATIONS. They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator, or official.

The race director shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in his/her opinion does not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or deviation of these rules is left to the discretion of the officials. Their decision is final.