PRO MAX RULES
Safety
1. All entries in this class will be limited to 130MPH. Course length will be adjusted to keep speeds under 130 MPH.
2. Maximum course length, ice & snow 660 feet 1 grass & dirt 500 feet.
3. Snowmobiles equipped with nitrous oxide systems must not heat nitrous oxide bottles with open flame. Disqualification will result if caught using open flame to heat nitrous oxide bottle. Electric bottle blankets allowed.
4. All nitrous oxide bottles must be date stamped by manufacture and reecertified as manufacture requires.
5. All turbo charged and super charged engines must be equipped with a super charger restraint and a flexible blanket shield. Superchargers must have belt and pully cover.
6. All snowmobiles and drivers must make one (1) quarter pass ,one (1) half pass, and one (I) full pass per year to receive a race license to be able to compete in this class. This is a requirement to all drivers and snowmobiles in this class.
7. Snowmobile must pass technical and safety inspection prior to licensing passes.
General
1. Competition is open to any snowmobile, either production or one of a kind experimental (which could include rear engine type snowmobiles).
2. Minimum combined wet weight (without gas) is five hundred fifty (550) pounds.
3. Maximum overall length is 144 inches.
4. Snowmobiles must comply with GENERAL RULES AND REGULATIONS SECTION.
5. The ISR Certified Tech inspector will have authority to determine structural integrity.
1. All entries in this class will be limited to 130MPH. Course length will be adjusted to keep speeds under 130 MPH.
2. Maximum course length, ice & snow 660 feet 1 grass & dirt 500 feet.
3. Snowmobiles equipped with nitrous oxide systems must not heat nitrous oxide bottles with open flame. Disqualification will result if caught using open flame to heat nitrous oxide bottle. Electric bottle blankets allowed.
4. All nitrous oxide bottles must be date stamped by manufacture and reecertified as manufacture requires.
5. All turbo charged and super charged engines must be equipped with a super charger restraint and a flexible blanket shield. Superchargers must have belt and pully cover.
6. All snowmobiles and drivers must make one (1) quarter pass ,one (1) half pass, and one (I) full pass per year to receive a race license to be able to compete in this class. This is a requirement to all drivers and snowmobiles in this class.
7. Snowmobile must pass technical and safety inspection prior to licensing passes.
General
1. Competition is open to any snowmobile, either production or one of a kind experimental (which could include rear engine type snowmobiles).
2. Minimum combined wet weight (without gas) is five hundred fifty (550) pounds.
3. Maximum overall length is 144 inches.
4. Snowmobiles must comply with GENERAL RULES AND REGULATIONS SECTION.
5. The ISR Certified Tech inspector will have authority to determine structural integrity.
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