4 Stroke Classes

2022 Presented By

IKF (Briggs & Stratton)
4-Stroke Official Classes

Fuel

Aspen

Tires

Evinco SKH Blue

Kid Karts

  • Honda Kid Karts (ages 5-8)
    MINIMUM WEIGHT:           160 pounds
    ENGINE:  HONDA GXH50.  To be run in accordance with the current IKF rule set.
    CLUTCH / GEAR:  Per IKF/Honda Kid Kart Spec Rule Set. 15:89 gearing
    TIRES: EVINCO SKH Blue 10X4.50-5 front, 10X4.50-5 rear / Rain – MG WT.  Max Rear tire circumference is thirty three & three quarter (33.75) inches.
    NUMBERS: 5-99

LO206

Carb Adjustment Clarifications:  Per the B&S rule set no jetting changes are allowed from stock and must be as supplied by Briggs with the motor out of the box.  Only the air screw, float height and stock needle & clip height may be adjusted.

  • 206 Cadet: blue slide (ages 7-13)
    MINIMUM WEIGHT: 240* pounds
    ENGINE: LO206 Senior Engine with 6100 rev limiter. Carb Lock Required. Slide .520 (Blue). To be run in accordance with the current IKF rule set. No deviations permitted.
    CLUTCH / GEAR: Per IKF Rule Set. Gear is open.
    TIRES: EVINCO SKH Blue 10X4.50-5 front, 10X4.50-5 rear / Rain – MG WT. Max Rear tire circumference is thirty three & three quarter (33.75) inches.
    NUMBERS: 200-299
  • 206 Junior: yellow slide (ages 12-15)
    MINIMUM WEIGHT:        310 pounds
    ENGINE:  LO206 Senior Engine with 6100 rev limiter.  Slide .570 (Yellow).  To be run in accordance with the current IKF rule set.  No deviations permitted.
    CLUTCH / GEAR:  Per IKF Rule Set.  Gear is open.
    TIRES: EVINCO SKH Blue 10X4.50-5 front, 10X6.0-5 rear  / Rain – MG WT.
    NUMBERS: 400-499
  • 206 Senior: (ages 15+)
    MINIMUM WEIGHT:           360 pounds
    ENGINE:  LO206 Engine.  To be run in accordance with the current IKF rule set.  No deviations permitted.
    CLUTCH / GEAR:  Per IKF Rule Set.  Gear is open.
    TIRES: EVINCO SKH Blue 10X4.50-5 front, 10X6.0-5 rear / Rain – MG WT.
    NUMBERS: 600-699

Please note all class weights with (*) have been adjusted for this year.

Any other classes added to any event will use current SKUSA/IKF class structure.

All ages listed are competition ages, except Kid Karts whom must be of the attained age of 5 prior to first race. Competition age is the age the competitor will turn during the calendar year. Attained age is the age the competitor is currently.

Classes may be combined or separated based on actual class entry