Rules and Regulations
New rules for the 2025 race season have been put in bold and bigger font
Any questions regarding rules and classes contact Mark Courteau 509-954-4769
No atv, utv, personal snowmobiles allowed in the pits only race snowmobiles and track officials are allowed to have motored transportation
Once 120 races are over snowmobiles are to be parked.
General Rules Drivers
Knee and shin guards required
Must have tether attached when on sled
Full face helmet required with goggles or face shield glasses or sunglasses are not enough
Track run up stands required with front and side guards No lifting of sleds allowed
Helmets to be worn while on snowmobile and attached
Upper body protection required (motocross style legal)
Neck braces recommended
High visible colors recommended for driver ORANGE requested
Gloves Required
Sled you qualify with is what you run in the mains
No sled or driver changes once racing starts
No alcohol in pits
Once you are put on tow sled can not return to that race
Once race has started sled and driver are not allowed to leave track
Protest must be made in writing and $250 in cash
Speak to Tech inspector for rules and paperwork
Snowmobile General Rules
All rules to be interpreted and enforced by tech director
Tech is always open
Once your sled has gone through tech no changes may be done to that sled unless approved by tech inspector
If not specified in the rules it is understood that, that change is illegal
Open hood policy (your hood could be opened at random at tech inspection)
Post race tech (top 3 sleds will be checked coming off the track)
6 inch numbers on both side contrasting colors from sled (If possible numbers on front of sled as well)
Any leaf spring sled 85 and older
Skis must have functioning leaf springs
Ski tips must be padded or have plastic hoops
Must be snowmobile with 2 skis
Clutch cover required
Up to 1 inch depth lug depth
Cleated Tracks allowed but will be inspected by tech inspector for approval
Hoods have to be on sleds
Headlights taped or removed
Windshields can be removed
Brakes can be updated
Must be naturally aspirated
No Sno-Scoots
Tail light mandatory
Snow Flaps Required to be in good condition and touching ground and attached to rear of chassis
No porting/altering of track
Traction devices and carbides mandatory
Traction products can not be over 3/8 inch past track lugs and no less then 30 degree tips
Carbides must be commercially available no longer then 14" and no less then 60 degree
Carbides tip from bottom of ski no taller than 5/8 inch
Stock Classes
Tunnel enclosure required that extends to bottom of tunnel and fully around the rear
No modifying or cutting to skis, leaf springs
Skis must be stock for machine or stock equivalent (If machine came with steel skis it must remain a steel ski)
Spring supports may be added to ski
No cobra style skis
Engine cooling to remain stock and unmodified, must be functioning
Pipe must remain stock for that snowmobile no cutting or altering may be done
Carbs can be updated not to be larger than original size, flat slides allowed
Engine to remain stock and match chassis internal mods allowed
Gas tank and seat can be replaced
Handlebars can be updated
Clutches can be updated
Suspension can be updated
Air boxes can be removed
Traction products and carbides mandatory
Working tail light
Super Stock
Tunnel enclosure that extends to bottom of tunnel and fully around the rear
Engine cooling to remain stock and unmodified, must be functioning
Internal mods allowed
No external mods to motor (intake concept to remain original)
Engine cylinders/heads must match motor and chassis
Carbs can be updated and larger then stock, flat slides allowed
Stock exhaust no cutting or modifying to pipe, must be original for motor/year/model
Jack shaft may be added or updated must remain in original drive shaft location
No belt drives
Can update skis, gas tank, and seat
No cobra style skis
Clutches can be updated
Working tail light
Traction products and carbides mandatory
Pro Mod
Any 1985 and older originally produced leaf spring snowmobile with any 1985 and older motor
No reproduction chassis allowed
Stock chaincase in stock location, no belt drives
Solid front beam can be widened with non adjustable spindles
Tunnel enclosure that extends to bottom of tunnel and fully around the rear
No cobra style skis
Mufflers not required
Working tail light
Any snowmobile engine combo allowed not to be larger than cc class entered
Supermod classes
Tunnel enclosure that extends to bottom of tunnel and fully around the rear
Any 85 and older originally produced leaf spring snowmobile or clone with 85 and older motors
Solid front beam with non adjustable spindles
Cobra style skis allowed
Mufflers not required
Working tail light
Any sled and engine combo allowed not to be larger than cc class entered
Open Mod "X" Class
Tunnel enclosure that extends to bottom of tunnel and fully around the rear
Any 85 and older engine/chassis combo clones allowed
Solid front axle with non adjustable spindles, with functioning leaf spring ski
Cobra style skis allowed
Working tail light
Any sled and engine combo 85 and older
IFS Mod
Any 85 and older IFS snowmobile and 85 and older engine
Any engine/chassis combo
Reproduction chassis allowed
No leaf spring sleds
Tunnel enclosure that extends to bottom of tunnel and fully around the rear
Mufflers not required
Working tail light
All sled sizes run together until we have enough to separate them
120 Stock Class Governor adjustment & gear change allowed no pipe change allowed
120 Improved Class governor adjustment, gear change, pipe change allowed
120/200 Mod Class Engine modifications up to 200cc four stroke allowed
CC limits For Motor
300-317 max
340-358 max
440-464 max
500-525 max
Jumping Up Rule cc limits
300 to 340-440-500
340 to 440-500
440 to 500
Fan to Free Air-Liquid
Free Air to Liquid
If a Jr age racer runs in the mod class they are no longer eligible to run in the Jr class
Vintage Snowmobile Racing Priest Lake