ISDRS STOCK RULES
STOCK 2� MIN SUSP. TRAVEL, NO ENGINE MODS, NO AFTERMARKET SILENCERS OR PIPES, TRACK-STOCK/OEM�9811 TYPE SPEED TRACK (NO CLOSED WINDOW TRACKS, NO CLIP REMOVAL, NO SUSPENSION MODS TO FIT LONGER TRACK), CAN REMOVE SLIDES, SKIS-STOCK/OEM TYPE�SKI SKINS, STUDS- PICKS/CHISELS OR CARBIDE STUDS, MAX 3/4 PAST LUG, REAR WHEELS MUST REMAIN OEM. ALLOWABLE CHANGES, CLUTCHING WEIGHTS, SPRINGS, RAMPS, JETTING, EFI and CDI REPROGRAMS, AIR FILTERS, LEGAL SPEED TRACKS AND LOWERING. GENERAL RACE RULES MUST BE 18 TO RACE (EXCEPT 120 CLASS) ALL SLEDS MUST CONFORM TO ALL RULES OUTLINED IN THE RULE BOOK GOVERNING SNOWMOBILE RACING. THE RULE BOOK IS THE DECIDING FACTOR WHETHER IT IS EXPRESSED OR NOT EXPRESSED IN THE POSTED RULES BELOW ALL SLEDS SUBJECT TO BOTH PRE AND POST TECH INSPECTION. REFUSAL FOR TECH INSPECTION IS AUTOMATIC DISQUALIFICATION RACE DIRECTORS OR TECH OFFICIALS DECISIONS ARE FINAL ALL SLEDS MUST HAVE FUNCTIONAL SILENCED PIPES NO RACING IN PITS, SLEDS MUST MAINTAIN SLOW SAFE SPEEDS IN PITS AT ALL TIMES FUNCTIONAL KILL SWITCH & TETHER 15 YEAR RULE ON STOCK SLEDS CAN RUN K&N STYLE FILTERS IN ALL CLASSES RACERS REQUIRED TO KEEP BOTH HANDS & FEET ON SLED DURING RACE NO TRACK LUBE SYSTEMS IF ALL SLEDS IN HEAT RED LIGHT WE WILL RERUN THAT HEAT IF RACER IS LATE FOR CLASS HE/SHE WILL BE DISQUALIFIED FROM THAT CLASS RACERS RESPONSIBILITY TO WEAR PROPER PROTECTIVE GEAR ( HELMET, SHOES/BOOTS, GLOVES, LONG PANTS, SHIRT, UPPER BODY PROTECTION) NO REFUNDS UNLESS CLASS IS CANCELED MUST MAKE FULL RUN UNLESS MACHINE HAS A FAILURE (DON�T TURN AROUND ON TRACK, WILL RESULT IN DISQUALIFICATION) CLEANOUT AT STARTING (UNLESS STATED OTHERWISE) SKI TIP MUST REMAIN BEHIND STARTING LINE EVEN IF THE RED LIGHT IS NOT LIT, WILL RESULT IN DISQUALIFICATION NO PERFORMANCE ENHANCING FUELS OR ADDITIVES
