Badger Kart Club

Age Groups & Class Requirements

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Kid Kart

NOTE: Kid Karts are a non-points exhibition class.

Age: 5 thru 8 years old

Kart Specifications
Front Width: 40-inch maximum (no minimum).
Rear Width: 39-inch minimum. 42-inch maximum
Wheelbase: 37.75 inches maximum
Tires: MG SH or SH2(Red) with a maximum circumference of 33-3/8 inches. Maximum tire pressure of 30 PSI after race.
Minimum weight: 150 lbs.
Only OEM bodywork is allowed.

Engines
Comer C-50 or C-51: 50cc with fixed jet carb sizes 54 to 58. Gear ratio 10/89. #219 chain.
Briggs Junior 206: per 2017 WKA Specifications. Gear ratio 17/57. #35 chain.
Honda GXH50U: As supplied by Honda Performance Development.

Micro Swift

Age: 7 through 10 years old

Engines/Fuel/Weight IAME :
Micro Swift 225 lbs. (kart and driver) Standard & Cadet Kart

Bodywork:
All bodywork must be CIK-style in appearance and must meet WKA Manufacturer’s Cup specifications. Front nose must be equipped with a CIK-homologated pushback nose system with a maximum of two CIK-homologated clamps.

Tire Spec:
MG SH, SH2 (Red) 10×4.60-5 Front and rear.

Engines
Engine per current WKA tech.

Mini Swift

Age: 8 through 12 years old

Engines/Fuel/Weight:
IAME Mini Swift

Gas and Oil only:
250 lbs. (kart and driver) Standard and Cadet Kart

Bodywork:
All bodywork must be CIK-style in appearance and must meet WKA Manufacturer’s Cup specifications. The front nose must be equipped with a CIK-homologated pushback nose system with a maximum of two CIK-homologated clamps.

Tire Spec:
MG SH or SH2 (Red) 10×4.60-5 Front and rear.

Engines
Engine per current WKA tech.

Briggs 206 Senior Medium

Age: 15 years or older

Engines/Fuel/Weight:
Briggs & Stratton LO206
Gas only
360 lbs. (kart and driver)

Tire Spec:
MG RL1 or VK (Orange) 10×4.60-5 front 11×6.00-5 rear

Miscellaneous
Engine tech as per current Briggs & Stratton 206 Senior specifications in the Briggs & Stratton 206 United States Rule Set. Drum clutch required.

TaG 100 Senior

Age: 15 years or older

Engines/Fuel/Weight:
KA100
Vortek ROK VLR
Gas and Oil only
360 lbs. (kart and driver)

Bodywork:
All bodywork must be CIK-style in appearance and must meet WKA Manufacturer’s Cup specifications. Front nose must be equipped with a CIK-homologated pushback nose system with a maximum of two CIK-homologated clamps.

Tire Spec:
MG SH or SH2 (red) 10×4.60-5 front, 11×7.10-5 rear.

Miscellaneous
KA100 engine, Tillotson HW-33A carburetor, factory airbox required. ROK VLR with Tillotson HW-38A carburetor. Exhaust as supplied by manufacturer.

Briggs 206 Cadet

Engines/Fuel/Weight:
Briggs & Stratton 206 (restricted)
Gas only
240 lbs. (kart and driver)

Tire Spec:
MG RL1 or VK (Orange) 10×4.60-5 front and rear.

Miscellaneous
Briggs & Stratton 206 (restricted) requires an unaltered “Red” .440-inch slide (P/N 555733) and a locking cap. Engine tech per the Briggs & Stratton 206 United States Rule Set. Drum clutch required.

Briggs 206 Sportsman

Age: 8 through 12 years old

Engines/Fuel/Weight:
Briggs & Stratton 206 (restricted)
Gas only
260 lbs. (kart and driver)
Standard & Cadet Kart

Tire Spec:
MG L1 orVK (Orange) 10×4.60-5 front and rear.

Miscellaneous
Briggs & Stratton 206 (restricted) requires an unaltered “Green” .490-inch slide (P/N 555740) and a locking cap. Engine tech per the Briggs & Stratton 206 United States Rule Set. Drum clutch required.

Briggs 206 Junior

Age: 12 through 15 years old

Engines/Fuel/Weight:
Briggs & Stratton LO206 (restricted)
Gas only
320 lbs. (kart and driver)

Tire Spec:
MG RL1 or VK (Orange) 10×4.60-5 front 11×6.00-5 rear

Miscellaneous
Briggs & Stratton 206 (restricted) requires an unaltered “Yellow” .570-inch slide (P/N 555741) and a locking cap. Engine tech per the Briggs & Stratton 206 United States Rule Set. Drum clutch required.

IAME 100 Junior

Age: 12 through 15 years old

Engines/Fuel/Weight:
KA100 with Junior Restrictor
Gas and Oil only
320 lbs. (kart and driver)

Bodywork:
All bodywork must be CIK-style in appearance and must meet WKA Manufacturer’s Cup specifications. The front nose must be equipped with a CIK-homologated pushback nose system with a maximum of two CIK-homologated clamps.

Tire Spec:
MG S or SH2 10×4.60-5 front, 11×7.10-5 rear.

Miscellaneous
KA100 engine, Tillotson HW-33A carburetor, factory airbox required. Exhaust as supplied by the manufacturer. Junior restrictor as supplied by the manufacturer.

Briggs 206 Senior Heavy

Age: 15 years or older

Engines/Fuel/Weight:
Briggs & Stratton LO206
Gas only
390 lbs. (kart and driver)

Tire Spec:
MG RL1 or VK (Orange) 10×4.60-5 front 11×6.00-5 rear

Miscellaneous
Engine tech as per current Briggs & Stratton 206 Senior specifications in the Briggs & Stratton 206 United States Rule Set. Drum clutch required

Expert

Age: Any individual who is at least 8 years old may enter the Expert class. Drivers 8 – 15 years old may race this class only with the Race Committee’s approval.

Note:
The intention here is to provide a place to race for any visitors to our track who’s kart or equipment do not fall into any of BKC’s class structures.

Requirements:
Kart must pass safety pre-tech.
Kart/driver combination must satisfy the requirements of a nationally recognized kart-sanctioning body.

Fuel
Open fuel. No Dioxane. Subject to test for such.

Other Rules That You Should Check Out

  • Tire treating is prohibited in all classes.
  • MG SH SH2 (Red) Tires Only for all 2-cycle classes and kid karts.
  • MG RL1 or VK (Orange) for all 4-cycle classes.
  • Expert: any tire meeting IKF or WKA tire qualifications.
  • Briggs 206 classes use a spec gas; BP 87-octane gasoline available at the Bull Frog Gas Station located at 319 N. Main St., Dousman, WI.
  • 2-Cycle classes use a spec gas; BP 93-octane gasoline available at the Bull Frog Gas Station located at 319 N. Main St., Dousman, WI.
  • 2-Cycle spec oil is 6 to 8oz Redline Racing Oil,  Xeramic Castor Evolution 2T Kart Racing Oil, or ELF HTX-909 per gallon.
  • All classes require CIK bodywork and full rear bumpers.
  • All the specs listed in the class requirements on this site are not all of the rules. They are the main ones for our class structure.
  • WKA rules apply, unless specified in our ‘Class Requirements’ on this site and the Badger Kart Club’s ‘Competition Rules, Regulations and Procedures’ Book.
  • For more information on rules e-mail: George Sieracki BKC Rules Chairman.
Download Full Rulebook

Questions on Requirements, Set up, Gears, etc…

Don’t hesitate, just ask and they will get your questions answered. Simply contact one of the Club’s Officers for help.

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