Congratulations to the 2017 Badger Kart Club Class Champions!
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Photos from the 2017 BKC Season may be viewed and purchased at http://www.rinkerphoto.com/Sports
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2017 Competition Class Requirements

SPECIAL NOTE: For the 2017 season, HPV and KPP motors may use any combination of components that are HPV or KPP.

7.7 Kid Kart

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

7.7.1 Age

5 thru 8 years old

7.7.2 Kart Specifications

Length: 52-inch maximum.

Width: 42-inch maximum.

Wheelbase: 29 inches to 31 inches

Tires: Bridgestone YHC, YKC, or YLC with maximum circumference of 33-3/4 inches.

Minimum weight: 150 lbs.

Only OEM bodywork allowed.

7.7.3 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.


6.1 Briggs Animal Sportsman

6.1.1 Age

7 thru 12 years old

6.1.2 Engines/Fuel/Weight

Briggs & Stratton Animal (restricted)

Gas only or Methanol Alcohol only

260 lbs. (kart and driver)

Standard & Cadet Kart

6.1.3 Tire Spec

Bridgestone (YDS) 10x4.50-5 front and rear

6.1.4 Miscellaneous

Briggs & Stratton Animal (restricted) requires a Gold 0.505 restrictor (see Rule 7.2.7). Engine per current WKA tech. Exception: no claiming of clutch.


6.2 LO206 Sportsman

6.2.1 Age

7 thru 12 years old

6.2.2 Engines/Fuel/Weight

Briggs & Stratton LO206 (restricted)

Gas only

260 lbs. (kart and driver)

Standard & Cadet Kart

6.2.3 Tire Spec

Bridgestone (YDS) 10x4.50-5 front and rear.

6.2.4 Miscellaneous

Briggs & Stratton LO206 (restricted) requires “Green” slide (P/N 555740) and locking cap. Engine tech as per Junior 1 Club specifications in the Briggs & Stratton LO206 rule set. Drum clutch required.


6.3 Yamaha Sportsman (YBX)

6.3.1 Age

7 thru 10 years old

Past year champion must move out of class(see 1.7.2.4)

6.3.2 Engines/Fuel/Weight

100cc Yamaha KT100S (restricted)

Gas and Oil

225 lbs. (kart and driver) Standard and Cadet Kart

6.3.3 Tire Spec

Bridgestone (YLC) 10x4.50-5 front and rear

6.3.4 Miscellaneous

100cc Yamaha KT100S (restricted) requires a Walbro WA55B carburetor with WA55B manifold.

Must use stock/unaltered RLV-YBX Muffler or stock/unaltered RLV-YBX Muffler with welded end cap as purchased from Badger Kart Club.


6.4 Yamaha Sportsman

6.4.1 Age

8 thru 12 years old

6.4.2 Engines/Fuel/Weight

100cc Yamaha KT100S (restricted)

Gas and Oil

250 lbs. (kart and driver) Standard and Cadet Kart

6.4.3 Tire Spec

Bridgestone (YLC) 10x4.50-5 front and rear

6.4.4 Miscellaneous

100cc Yamaha KT100S (restricted) requires a Walbro WA55B carburetor with WA55B manifold.

Must use RLV-SSX stock box muffler only. SSX box muffler must be original unaltered RLV-SSX part #7548 (the can with four outlet holes spaced 90 degrees to each other) or part #7543 (the can with the four outlet holes evenly spaced between the 12 and 3 o’clock positions) or part #7540 (4 holes, holes up).


6.5 Komet Sportsman

6.5.1 Age

8 thru 12 years old

6.5.2 Engines/Fuel/Weight

KPP100

Gas and Oil

255 lbs. (kart and driver) Standard and Cadet Kart

6.5.3 WKA Bodywork

All bodywork rules according to WKA Manufacturer's Cup specifications. Lower bumper cross-member mandatory.

6.5.4 Tire Spec

Bridgestone (YLC) 10x4.50-5 front and rear

6.5.5 Miscellaneous

KPP100 engine, Walbro WA55B carburetor with WA55B manifold, KPP1 or HPV1 pipe and header assembly. Tech: engine per current WKA Tech Manual, 2009 to 2017 WKA clutch rules allowed.


6.6 Micro TaG

6.6.1 Age

7-10 years old

Past year champion must move out of class (see 1.7.2.4)

6.6.2 Engines/Fuel/Weight

Vortek Micro Rok

IAME Micro Swift

Gas and Oil only

225 lbs. (kart and driver) Standard and Cadet Kart

6.6.3 Tire Spec

Bridgestone (YLC) 10x4.5-5 Front and rear.

6.6.4 Miscellaneous

Engine per current WKA tech.


6.7 Mini TaG

6.7.1 Age

8-12 years old

6.7.2 Engines/Fuel/Weight

Vortek Mini Rok

IAME Mini Swift

Gas and Oil only

250 lbs. (kart and driver) Standard and Cadet Kart

6.7.3 Tire Spec

Bridgestone (YLC) 10x4.5-5 Front and rear.

6.7.4 Miscellaneous

Engine per current WKA tech.


6.8 Briggs Animal Junior

6.8.1 Age

11 thru 15 years old

6.8.2 Engines/Fuel/Weight

Briggs & Stratton Animal

Gas only or Methanol alcohol only

300 lbs. (kart and driver)

6.8.3 Tire Spec

Bridgestone (YDS) 10x4.50-5 front 11x6.00-5 rear

6.8.4 Miscellaneous

Engine per current WKA tech.


6.9 LO206 Junior

6.9.1 Age

11 thru 15 years old

6.9.2 Engines/Fuel/Weight

Briggs & Stratton LO206 (restricted)

Gas only

310 lbs. (kart and driver)

6.9.3 Tire Spec

Bridgestone (YDS) 10x4.50-5 front 11x6.00-5 rear

6.9.4 Miscellaneous

Briggs & Stratton LO206 (restricted) requires “Yellow” slide (P/N 555741) and locking cap. Engine tech as per ASN National Junior specifications in the Briggs & Stratton LO206 rule set. Drum clutch required.


6.10 Yamaha Junior

6.10.1 Age

11 to 15 years old

6.10.2 Engines/Fuel/Weight

100cc Yamaha KT100S

Gas and Oil

310 lbs. (kart and driver)

6.10.3 Tire Spec

Bridgestone (YLC)

6.10.4 Miscellaneous

100cc Stock Yamaha KT100S. Must use RLV-SSX stock box muffler only. SSX box muffler must be original unaltered RLV-SSX part #7548 (the can with four outlet holes spaced 90 degrees to each other) or part #7543 (the can with the four outlet holes evenly spaced between the 12 and 3 o’clock positions) or part #7540 (4 holes, holes up).


6.11 TaG Junior

6.11.1 Age

12 - 15 years old

6.11.2 Engines/Fuel/Weight

IAME Leaopard with 25mm header

IAME X30 with 29mm header

IAME MY09 with 25mm header

Vortek Junior Rok

Rotax 125 Junior MAX

PRD Fireball with 0.877" filter cup (Junior II spec)

Gas and Oil only

330 lbs. (kart and driver)

6.11.3 Tire Spec

Bridgestone (YLC) 10x4.50-5 front 11x7.10-5 rear


6.12 Briggs Animal Senior

6.12.1 Age

15 years or older

6.12.2 Engines/Fuel/Weight

Briggs & Stratton Animal

Gas only or Methanol alcohol only

350lbs. (kart and driver)

6.12.3 Tire Spec

Bridgestone (YDS) 10x4.50-5 front 11x6.00-5 rear

6.12.4 Miscellaneous

Engine per current WKA tech.


6.13 LO206 Senior

6.13.1 Age

15 years or older

6.13.2 Engines/Fuel/Weight

Briggs & Stratton LO206

Gas only

375 lbs. (kart and driver)

6.13.3 Tire Spec

Bridgestone (YDS)

6.13.4 Miscellaneous

Engine tech as per Briggs & Stratton 206 Senior specifications in the Briggs & Stratton LO206 rule set. Drum clutch required.


6.14 Yamaha Supercan

6.14.1 Age

15 years or older

6.14.2 Engines/Fuel/Weight

100cc Yamaha KT100S

Gas and Oil

355 lbs (kart and driver)

6.14.3 Tire Spec

Bridgestone (YLC)

6.14.4 Miscellaneous

100cc Stock Yamaha KT100S. Must use RLV-SSX stock box muffler only. SSX box muffler must be original unaltered RLV-SSX part #7548 (the can with four outlet holes spaced 90 degrees to each other) or part #7543 (the can with the four outlet holes evenly spaced between the 12 and 3 o’clock positions) or Part #7540 (4 holes, holes up).


6.15 Senior Heavy

6.15.1 Age

15 years or older

6.15.2 Engines/Fuel/Weight

- 100cc Yamaha KT100S

Gas and Oil

385 lbs. (kart and driver)

- Briggs Animal Engine

Gas or methanol

385 lbs. (kart and driver)

6.15.3 Tire Spec

Bridgestone (YLC)

6.15.4 Miscellaneous

100cc Stock Yamaha KT100S. Must use RLV-SSX stock box muffler only. SSX box muffler must be original unaltered RLV-SSX part #7548 (the can with four outlet holes spaced 90 degrees to each other) or part #7543 (the can with the four outlet holes evenly spaced between the 12 and 3 o’clock positions) or part #7540 (4 holes, holes up).

Briggs Animal engine per current WKA tech. Aftermarket billet rod allowed. Must retain stock length.


6.16 Komet

6.16.1 Age

11 years or older.

6.16.2 Engines/Fuel/Weight

KPP 100

Gas and Oil only

360 lbs. (kart and driver)

6.16.3 WKA Bodywork

All bodywork rules according to WKA Manufacturer’s cup specifications. Lower bumper cross member mandatory.

6.16.4 Tire Spec

Bridgestone (YLC) 10x4.50-5 front, 11x7.10-5 rear.

6.16.5 Miscellaneous

KPP 100 engine, Walbro WB3A carburetor, KPP2 or HPV2 pipe and header assembly. Tech: engine rules per current WKA Rule Book; 2009 to 2014 clutch rules allowed.


6.17 TaG Senior

6.17.1 Age

15 years or older

6.17.2 Engines/Fuel/Weight

Cheetah SQ 125 at 350 lbs.
Easykart IAME & BMB at 350 lbs.
Motori Seven at 380 lbs.
Parilla Leopard at 365 lbs.
Parilla X-30 at 370 lbs.
Rotax FR 125 at 365 lbs.
Sonik TT 125 (125cc) at 395 lbs.
Sonik VX 125 (118cc) at 365 lbs.
Vortek Rok TT at 385 lbs.
PRD Fireball at 350 lbs.
All weights kart and driver
Engine and fuel tech per WKA
Rotax will follow BKC 2-cycle fuel rule (Rule 7.3.4.1)
Engine tech per 2014 WKA specifications

6.17.3 Tire Spec

Bridgestone (YLC) 10x4.50-5 front 11x7.10-5 rear


6.18 Expert

6.18.1 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.

6.18.2 Requirements

Kart must pass safety pre-tech.

Kart/driver combination must satisfy the requirements of a nationally recognized kart sanctioning body.

6.18.2.1 Fuel

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


Other Rules That Should You Should Check Out

  • Tire treating is prohibited in all classes.

  • Bridgestone YLC Tires only, Except Briggs Animal and LO206 Classes and Expert.

  • Briggs Animal and LO206 Sportsman, Junior, and Senior: Bridgestone YDS Tires only.

  • Expert: any tire meeting IKF or WKA tire qualifications.

  • LO206 classes use a spec gas; BP regular gasoline available at the Bull Frog Gas Station located at 319 N. Main St., Dousman, WI.

  • 2-Cycle classes use a spec gas; BP premium 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, Burris Blend, or Burris Castor per gallon or any combination Burris Blend and Burris Castor or Redline and Burris Caston, 6 to 8oz per gallon.

  • All KPP, Shifter, and TaG Senior classes must follow CIK Bodywork with full rear bumpers

  • All the specs listed in the class requirements on this site, are not all 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.

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.