F100

subtitle..

For further rules and more detailed explanations of the rules listed below, please visit the F100 Class Structure

FJ2

(Formerly F100 Junior Novice)

(Non-points developmental class)

Presented by: Rebel Mutt Karting

  • Requires Level 2 license (Level 2 license automatically awarded to every F100 racer)
  • Engine and pipe combinations and minimum weights:
    • Yamaha KT-100
      • KPV/HPV/RLV 2 pipe @ 295 lbs (please note this pipe is different than an A2, G2 or L2 pipe)
      • 4 hole can @ 270 lbs
    • KPV/HPV
      • KPV/HPV/RLV 2 pipe @ 310 lbs
    • Other 100cc piston port engines please email F100 at formula100kartingseries@gmail.com, for rules and technical specifications. Other 100cc piston port engines, such as a TKM BT82, ARC 100cc or PRD RK100, are allowed in Level 1 classes.
  • Chassis
    • Junior or full size kart chassis only
      • No cadet kart chassis
  • Tires
    • Approved tires (see section 5a for a list of approved tires)
      • 4.5 or 4.6/10.0x5 front
      • 6.0/11.0x5 or 7.1/11.0x5 rear
  • Clutch
    • KT-100
      • Open, axle or crankshaft clutch
    • KPV/HPV
      • Horstman EXPD or IAME spec clutch
        • 6000 rpm maximum stall speed
          • Subject to clutch stall speed test
  • Exhaust
    • KT-100
      • 4 hole can (RLV 7548 or 7540)
      • KPV 2 (“K2” pipe)  flex length 11.875” to 12.375” with Walbro WB3a carburetor, RLV 9110 header required
      • HPV 2 flex length 12” to 12.5” with Walbro WB3a carburetor, RLV 9110 header required
      • RLV 2 flex length with 9.375” to 9.875” with Walbro WB3a carburetor, RLV 9110 header required
    • KPV/HPV
      • KPV 2 (“K2” pipe)  flex length 11.875” to 12.375” with Walbro WB3a carburetor
      • HPV 2 flex length 12” to 12.5” with Walbro WB3a carburetor
      • RLV 2 flex length 9.375” to 9.875” with Walbro WB3a carburetor
  • Fuel
    • Any leaded or unleaded fuel of any octane, pump fuel, specialty fuel or race fuel, that is commercially available to the public. No performance enhancing additives allowed.
    • Oil is open.

FJ1

(Formerly F100 Junior)

Presented by: Empire Karts

  • Invitation/approved ONLY, requires Level 1 license
  • Engine and pipe combinations and minimum weights:
    • Yamaha KT-100
      • KPV/HPV/RLV 2 pipe @ 295 lbs (please note this pipe is different than an A2, G2 or L2 pipe)
    • KPV/HPV
      • KPV/HPV/RLV 2 pipe @ 310 lbs
  • Chassis
    • Junior or full size kart chassis only
      • No cadet kart chassis
  • Tires
    • Bridgestone YLC, YKC or YHC
      • 4.5/10.0x5 front
      • 6.0/11.0x5 rear
  • Clutch
    • KT-100
      • Open, crankshaft clutch only
    • KPV/HPV
      • Horstman EXPD or IAME spec clutch
        • 6000 rpm maximum stall speed
          • Subject to clutch stall speed test
  • Exhaust
    • KT-100
      • KPV 2 (“K2” pipe)  flex length 11.875” to 12.375” with Walbro WB3a carburetor, RLV 9110 header required
      • HPV 2 flex length 12” to 12.5” with Walbro WB3a carburetor, RLV 9110 header required
      • RLV 2 flex length with 9.375” to 9.875” with Walbro WB3a carburetor, RLV 9110 header required
    • KPV/HPV
      • KPV 2 (“K2” pipe)  flex length 11.875” to 12.375” with Walbro WB3a carburetor
      • HPV 2 flex length 12” to 12.5” with Walbro WB3a carburetor
      • RLV 2 flex length 9.375” to 9.875” with Walbro WB3a carburetor
  • Fuel
    • Please see section 2a of Rule Supplement