Class Rules

Refer to ISR Rule book for full set of rules for all classes. The following rules take precedent over and are in addition to ISR rules.

VINTAGE STOCK CLASS

  1. Any year Kitty Cat chassis is eligible but must have a Kawasaki engine only.
  2. Pistons: Kawasaki OEM pistons can only be used. Arrow on top of piston must be pointed toward the exhaust port. The two piston ring land retaining pins must be located between exhaust port and transfer ports (1 each side) and cannot be moved from original position. Both rings must be used.
  3. Lighting coils must remain intact on B motors
  4. ALL KC STOCK RULES APPLY.
  5. Vintage Kitty Cat will have 4 lap finals.

BOX STOCK KITTY CAT: (Check with Race Director if this class is going to be raced.)

  1. This class is intended for new/young racers and as a low cost way to begin racing.
  2. Sleds are to be as if they were brand new and just out of the box – Completely stock.
  3. 20 Studs may be added to the track for traction.
  4. Carbide may be added to right ski.

AMATEUR STOCK KITTY CAT CLASS

  1. “Amateur Stock Kitty Cat” is a non-points class for children 4-7 years of age, or the first year of racing (rookie year, minimum 4 years old). It is designed for racers with little or no racing experience. The purpose of the Amateur Stock Kitty Cat class is to sharpen a racer’s skills and boost his/her confidence. Stock Kitty Cat rules apply. A 120 Stock Driver may run KC Amateur or vise versa providing all other rules are met. A non-member can only race an amateur class the first year they start racing with WKCR.
  2. Graduation: A driver in Amateur KC Stock who takes three first places finishes in Amateur KC or 3 top three finishes in KC Stock (or a combination there of totaling three) will be considered graduated and can no longer compete in KC Amateur. Races that have less than 4 racers will not be counted towards graduation status. *Standings from the previous race season and every season to follow will affect a racer’s Amateur Stock Kitty Cat eligibility. *

STOCK KITTY CAT CLASS

  1. Rear suspension wheels may be replaced with OEM bearing type replacement wheels. Wheels must be the same diameter as stock wheels. Rear suspension bearing wheel spacers may be made from materials other than steel. (The axle shafts and side plates MUST remain OEM steel.)
  2. Quick change gear hubs are allowed. Steel or aluminum gears may be used. Structural integrity must be maintained.

FORMULA III (F3)

  1. Recoils on the FI and FIII machines may be removed; however, the cover must be in place for safety reasons.
  2. Suspension (front and track) must be stock.
  3. Suzuki pistons can only be used. The two piston ring land retaining pins may be moved.
  4. Silencers will be required.
  5. Rear suspensions may use lightweight components. Any alterations MUST be stock appearing. Stock ride height and wheel base must be maintained. All suspension alterations (front and rear) MUST maintain structural integrity.
  6. All front end wideners must be bolt on type wideners only, no alterations to the geometry (i.e., caster, camber) of the front end is allowed.
  7. Velocity stacks are not allowed on FIII.

FI - BEGINNER

  1. “FI-Beginner” is a non-points class and designed for racers with little or no FI racing experience. It is also a class for FI racers who have had limited success in FI. The purpose of the FI-Beginner class is to sharpen a racer’s skills and boost his/her confidence. FI-Beginner status does not make a racer ineligible to race FI. FI rules apply. In the spirit of this ... we ask that experienced and/or skilled FI racers not compete in this class. A non-member can only race in Beg. F1 for the first year they start racing with WKCR.
  2. Graduation: Providing there at least 4 racers in any one Beg. FI race: FI-Beginners who take a 1st place in FI-Beginner 3 times and/or finish 1st – 3rd in an F1 final 3 times will no longer be eligible to race FI-Beginner. Races that have less than 4 racers will not be counted towards graduation status. *Standings from the previous race season and every season to follow will affect a racer’s FI-Beginner eligibility. A new FI-Beginner racer, may not graduate out until the racer has completed one (1) race year in FI-Beginner class. A Race year, for this rule’s purposes, is defined as a racer competing in at least 50% of the races for a given year. Previous race years are considered for eligibility determination.

FORMULA I (FI)

  1. Suzuki pistons can only be used. The two piston ring land retaining pins may be moved.
  2. Silencers will be required.
  3. Recoils on the FI and FIII machines may be removed; however, the cover must be in place for safety reasons.

IMPROVED STOCK KITTY CAT CLASS

Same as Stock Kitty Cat Class

AMATEUR 120 STOCK CLASS:

  1. “Amateur 120 Stock” is a non-points class for children 4-7 years of age, or the first year of racing (rookie year). It is designed for racers with little or no racing experience. The purpose of the Amateur 120 Stock class is to sharpen a racer’s skills and boost his/her confidence. 120 Stock rules apply. A 120 Stock Driver may run KC Amateur or vice-versa providing all other rules are met. A non-member can only race an Amateur class the first year they start racing with WKCR.
  2. Graduation: A driver in Amateur 120 Stock who takes three first places finishes in Amateur 120 Stock or 3 top three finishes in 120 Stock (or a combination there of totaling three) will be considered graduated and can no longer compete in 120 Amateur. Races that have less than 4 racers will not be counted towards graduation status. *Standings from the previous race season and every season to follow will affect a racer’s Amateur 120 Stock eligibility. *

120 BOX STOCK CLASS (Check with Race Director if this class is going to be raced.)

  1. This class is intended for new/young racers and as a low cost way to begin racing.
  2. Sleds are to be as if they were brand new and just out of the box – Completely stock.
  3. 20 Studs may be added to track for traction. 4. Carbide may be added to right ski.

120 STOCK CLASS

  1. The foam filters can be removed from airbox.
  2. All governor parts must be intact, but do not have to be functional.
  3. 420 chain may be used.

120 SUPER STOCK

  1. 120 Stock rules apply.
  2. 120 Super Stock is considered a STOCK class.
  3. 420 chain may be used.
  4. Driven gear ratio as follows: Polaris and Skidoo: 32 Tooth, Artic Cat: 34 Tooth.

120 IMPROVED STOCK CLASS

Same as stock 120

120 CHAMP CLASS

  1. Stock Flywheels are NOT allowed, due to safety concerns.
  2. Commercially available billet aluminum flywheels are mandatory.
  3. The suspension front and rear have to be non rigid (there has to be some movement in both front and rear suspensions).
  4. Vacuum fuel pumps are allowed.

120 SPRINT CLASS

  1. Stock 120 Chassis’s per ISR Stock 120 class rules, must be used.
  2. Motors will be per the ISR 120 Champ rules.
  3. Clutches/drives will follow the ISR rules for Improved Stock 120 Class.
  4. Chain drive ONLY. No belt drives.

SEMI-PRO 206

Per ISR Rules, Stock chassis, Briggs and Stratton LO 206 Motor and approved muffler. Adjustable Main Jet allowed. Stock clutch and 32 tooth rear gear. 420 Chain allowed.

PRO 206

Per ISR Rules, Stock Chassis, Briggs and Stratton LO 206 Motor and approved muffler. Adjustable Main Jet allowed. Open chain clutch and open gear. 420 Chain allowed.

JUNIOR VINTAGE STOCK 300

See ISR rules for complete set of rules.

JUNIOR STOCK RACING:

  1. Eligibility: Once a racer advances to Junior Stock, they are no longer eligible to race Stock based classes (sleds with stock based engines), including but not limited to: KC Amateur Stock, KC Stock, KC Vintage, KC Improved Stock, 120 Amateur Stock, 120 Stock, 120 Improved Stock, 120 Super Stock, 120 Lemans, and Semi-PRO 206.
  2. Gear Ratios: All Artic Cats: 20-44, All Polaris: 17-41, SkiDoo’s without TRA Clutch: 18-44, and SkiDoo’s with TRA clutch: 16-44.