Kids Pro Ice Racing

2010 Season

120 Stock Class Rules

General

1. The Snowmobile must have original OEM engine, hood, track, frame, cowl, gas tank, carburetion, air box, suspension and clutch supplied by the manufacturer for the particular model. Named components must be OEM for the model and year, or properly filed OEM replacement parts that supercede the original OEM parts. Factory options are not allowed.
2. Engine RPM and vehicle speed may be monitored at the discretion of the Race Director.

Engine

1. Unless otherwise stipulated in this section, all governor parts must be intact, in place and functional. Any governor spring may be used.
2. Replacing Arctic Cat chain tensioner with commercially available aftermarket tensioner is allowed.
3. No component of the engine (including head, valves, cam, and valve springs) may be altered, changed or enlarged from the engine manufacturer's original stock specification nor may any additional components be added to the engine.
4. Blueprinting of engines is not allowed. No removal of material what so ever will be allowed. This is to include polishing port matching, deburring, glass or sand blasting surfaces or material removal for the purpose of engine balancing or other reasons.
5. No changes in engine dimensions can be made by gasket adjustments.
6. Spark plugs do not necessarily have to be OEM stock.
7. No carburetor/air silencer changes allowed.
8. Jetting changes are allowed
9. Remote adjustable main jet system allowed.
10. Exhaust must be OEM as produced for the model. The OEM exhaust system must be used in its entirety.  No internal or external modifications allowed.  No welding allowed, even for repair.  Muffler components and/or silencing material must be intact at all times.
11. In order to equalize performance between the manufactures' models the following changes are allowed.
    1. Ski-Doo racers are allowed to change valve springs to Honda P/N 14751-2E1-000
    2. Arctic Cat 120 racers are allowed to upgrade to the 120 SnoPro kit consisting of valve springs and cam. The kit must be used in its entirety.
12. To enhance durability, plastic governor gears may be removed in classes, which allow governor to be disabled.
    

Drive

1. Brake must be functional and operational at all times.
2. OEM drive clutch must be used with no modifications.
3. Stock drive clutch engagement must be maintained.
4. No belt drives allowed.
5. Chain guard must be in place.
6. OEM gear ratio must be maintained.
7. Sprocket ratio changes may be required by circuits in order to equalize performance between the various models.

Ski Suspension & Steering

1. Front suspension must be OEM for the model.
2. Front suspension must remain in its stock location.
3. Ski widening devices and/or height adjustments devices are not allowed in stock classes unless furnished as OEM and properly filed.
4. Suspension travel may be limited by means of limit straps only. Minimal suspension travel must be maintained. No rigid suspensions allowed.

Skis & Ski Runners

1. Ski must be OEM for the model and year or a commercially available after market ski with a minimum overall length of 20 inches.
2. Ski suspension components must be OEM.
3. Ski Tips must have ski loops. Steel ski loops must be padded.

Track Suspension

1. The complete suspension must be used as furnished and filed by the manufacturer. No options allowed.
2. Shocks must be OEM for the model.  OEM for the model suspension mounting points must be used.
   
3. Seals may be removed from bearings in bogie wheels, rear idler wheels and/or rear idler sprockets.
   Commercially available marginal snow wheels may be added to the slide rails.  (Rear axle idler wheels must remain OEM for the model.)
4. Suspension travel may be limited by means of limit straps only. Minimal suspension travel must be maintained. No rigid suspensions allowed.
5. Slide rail lubrication systems not allowed.

Track & Traction

1. Any commercially available molded rubber track may be used. Track must fit within frame and suspension without modification to frame, suspension or drive. Track must be used as produced by the molder. Hyfax allowed.
2. (Oval) Track studs must not extend more than 3/8 inch above the highest point of the track.
3. (Drags) Track studs must not extend more than 3/4 inch above the highest point of the track.

Frame & Body

1. OEM hood must be maintained without modification.  Hood may be painted any color except in Oval and Snocross, where orange on the snowmobile is not allowed. All sharp edges must be padded.y be painted any color.
2. Windshield may be removed, modified or replaced. Windshield must have safety trim.
3. All sharp edges must be padded.

Ignition & Electrical

1. An ignition tether switch must be installed and functional.
2. Headlight and taillight must be OEM for the model and taillight must be functional.
3. Ignition and lighting systems must be OEM for the model. No modifications allowed.