See 2021 IKF rulebook sections as specified for class rules
Laydown Enduro Classes - See Section 302 |
Tires | Weight | Age | |
| 1 | FKE 1 - 100cc Open | |||
| 80/85cc Gearbox | Open | 370 | 16+ | |
| 100cc Clutch Enduro | Open | 400 | 16+ | |
| 100cc Clutch Sprint See Sec. 306.3 | Open | 360 | 16+ | |
| 2 | FKE 2 - 125/150 Open | |||
| 150cc Open Motors | Open | 400 | 16+ | |
| Open/FKE II 125cc Gearbox Motors | Open | 400 | 16+ | |
| 100cc Open Motors | Open | 380 | 16+ | |
| 80/85cc Open Gearbox Motors | Open | 370 | 16+ | |
| TAG Enduro | Open | 400 | 16+ | |
| TAG Enduro, Superstock Bodywork | Open | 380 | 16+ | |
| TAG Enduro, CIK Sprint | Open | 360 | 16+ | |
| 250cc 4 Cycle | Open | 400 | 16+ | |
| All FKE1 classes per FKE1 rules | ||||
| 3 | FKE 3 - Unlimited | |||
| 250cc Twin Gearbox | Open | 475 | 18+ | |
| 250cc Single Cylinder Gearbox | Open | 450 | 18+ | |
| KTM 300 | Open | 450 | 18+ | |
| 2-100cc Open Motors | Open | 400 | 18+ | |
| 2-150cc Open Motors | Open | 425 | 18+ | |
| RZ/RD 350 Yamaha | Open | 475 | 18+ | |
| 400cc Big Bore Kit | Open | 465 | 18+ | |
| 4 Stroke engines Single Cylinder/Twin Cylinder 500cc Max | Open | 460 | 18+ | |
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All FKE1 and FKE2 classes per FKE1 and FKE2 rules respecitively NOTE A: There is a 20 b. weight reduction for the use of a Sprint chassis in specified Enduro (laydown) classes. Top of seat back must be a minimum of 14" above the ground. *Open Fuel: Only Acetone may be added to facilitate blending of gas and methanol with oil, and only in quantities necessary to achieve blending. Large amounts not permissible. See Special Bodywork Rule 302.11.14 **See Sec. 617.21. |
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Superkart Classes - See Section 304 |
Tires | Weight | Age | |
| 4 | 125cc Gearbox Superkart Engine - Single Cylinder 125cc gearbox, per Sec. 654 and 655 |
Open | 465 | 16 |
| 5 | Superkart Intercontinental E Per IKF rulebook with the exception that stock rod length is to be maintained |
Open | 465 | 18+ |
| 6 | Superkart Super ICE Engine - Single Cylinder 250cc gearbox, bore and stroke not to exceed 250cc, otherwise, non-tech per 304.4 including single cylinder 4 stroke 450cc |
Open | 465 | 18+ |
| 7 | Superkart Formula E (FE TWIN) Engine - twin cylinder 250cc gearbox per sec. 304.5 including twin cylinder 4 stroke 450cc |
Open | 465 | 18+ |
Sprint Classes - See Section 306 |
Tires | Weight | Age | |
| 8 | Super Stock CR125 (99 cylinder only) Same as previous class 19 save new title as above |
Open | 400 | 16+ |
| 9 | Super Stock CR125 (SKUSA Engine Spec - 99-02 cyliner) Same as previous class 17 save new title as above |
Open | 385 | 16+ |
| 10 | Formula 125 Same as previous class 16 |
Open | 385 | 16+ |
| 11 | Yamaha Limited Same as previous class 9 |
Open | 360 | 16+ |
| 12 | TAG Heavy Same as previous class 12 |
Open | 400/415 | 16+ |
| 13 | World Formula Same as previous class 22 |
Open | 390 | 16+ |
| 14 | Formula 80 Senior Same as previous class 18 |
Open | 380 | 16+ |
| 15 | Junior TAG Same as current class Tag Junior in 850.3 Engine: Per OEM specifications published on IKF website, and manufacturers fische - Junior 2 restrictions required - all versions allowed in Road Race division |
Open | 330 | 13-15 |
| 16 | Junior 4 Cycle | |||
| Briggs LO206 | Open | 310 | 13-15 | |
| Briggs World Formula | Open | 330 | 13-15 | |
Local Option Shifter and TAG Classes |
Tires | Weight | Age | |
| 27 | Sprint Stock CR125 Chassis - Secs 306.9.3, CIK Driver Fairing and 307.4.3 Engine - 99-02 cylinder CR125 - Per Sec. 657 |
MG Yellow | 385 | 16+ |
| 31 | Rotax Max DD2 Chassis - Sec. 306 and 307 Engine - Per USRMC Rules |
Open | 400 | 16+ |
Local Option Open Classes |
Tires | Weight | Age | |
| 43 | Run What Ya Brung Chassis - Refer to Sections 302, 303, 304, 305 and 306.Chassis and bodywork must conform to competition and safety rules that apply to chosen kart design Engine - 650cc maximum, 2 cylinder maximum, 2 or 4 stroke |
Open | Open | 16+ |
Local Option 4-cycle Classes |
Tires | Weight | Age | |
| 56 | 4 Stroke Open Heavy Chassis - Sec. 306 and 307No front brakes. Engine - IKF Legal B&S Flat Heads, Animals, WF, Outlaw, Clone, F200, LO206 |
Open | 390 | 16+ |
Local Option Junior Classes |
Tires | Weight | Age | |
| 60 | Junior 100cc Sprint Chassis - Sec. 306 and 307 No front brakes. Yamaha Junior Sprint Engine - Sec. 617. Exhaust as per sec. 623.7.13 (RLV SSX Can - Any hole configuration) or RLV 2 #7402, connector tube must be between 9.375" and 9.875" KPV2 / HPV2 Engine - Sec 620.50 Formula 80 Jr Engine - Sec 653 Tag Jr Engine - Sec 675 Enduro Chassis - Sec. 301 |
Open | 320 | 13-15 |
Local Option Electric Kart |
Tires | Weight | Age | |
| 70 | Electric Kart Sprint Chassis - Sec. 306 and 307 Engine - Per manufacturer's Specifications - 40KW Maximum |
Open | TBA | TBA |
