HCKC / Classes
What you can race
Weights are with the driver, after qualifying and each heat. Classes and weights follow the posted HCKC rulebook, updated August 15, 2026. Rotax ages follow the 2025 Global Rotax Max Challenge regulations.
LO206 spec fuel is ethanol-free pump gas from the QT on Rueckle Road, or VP MS93. Spec classes add $5 to the entry for post-race tech. Four dollars from each entry fee goes to the annual awards fund. Each spec class needs a coordinator. Tires for the spec classes are Evinco Blue unless the class row says otherwise.
Kid Kart
| Class | Age | Min weight | Engine | Chassis |
|---|---|---|---|---|
| Kid Kart — HondaExhibition. Gas and oil only. Gear 15:89. Rear tire circumference 33.75 in max. | Attained age 5–8 | 150 lb | Honda GXH50 | — |
| Kid Kart — LO206Exhibition. Kid Karts never practice or race with other classes. | Attained age 5–8 | 200 lb kid-kart chassis, 215 lb cadet chassis | Briggs LO206 sealed, 4100 rpm, black slide | — |
LO206
| Class | Age | Min weight | Engine | Chassis |
|---|---|---|---|---|
| Cadet NoviceNon-championship. Beginners who skipped Kid Kart. Qualifies with Cadet 206. | Attained age 7–12 | 245 lb | Briggs LO206 sealed, 6100 rpm, green slide | Cadet |
| Cadet (Junior 1) | Attained age 7–12 | 245 lb | Briggs LO206 sealed, 6100 rpm, green slide | Cadet |
| Junior (Junior 2) | 12–15, competition age | 320 lb | Briggs LO206 sealed, 6100 rpm, yellow slide | Full-size |
| Senior | 16+ | 360 lb | Briggs LO206 sealed, 6100 rpm, stock slide | Full-size |
| Heavy / MasterAges 16–34 who are not adding at least 30 lb of lead to reach 390 lb run a 410 lb penalty weight. | 16+ | 390 lb | Briggs LO206 sealed, 6100 rpm, stock slide | Full-size |
Rotax MAX
Ages are the age a driver reaches during the calendar year. Per 2025 Global Rotax Max Challenge regulations; club rulebook governs local weights and eligibility.
| Class | Age | Min weight | Engine | Chassis |
|---|---|---|---|---|
| Micro MAXGear 14/72. | 8–11 (ages 7+ allowed at HCKC with a waiver) | 230 lb | Rotax 125, no exhaust valve, class restrictor | Cadet |
| Mini MAXGear 13/80. | 10–13 | 255 lb | Rotax 125, no exhaust valve, class restrictor | Cadet |
| Junior MAX | 12–14; 15 only with a special CIK licence | 320 lb | Rotax 125, no exhaust valve | Full-size |
| Senior MAX | 15+; 14 with a grade F international licence | 360 lb | Rotax 125, with exhaust valve | Full-size |
| Club MAXThe 2025 summary age table does not list Club MAX. | — | 375 lb | Rotax 125, no exhaust valve | Full-size |
| Masters MAXListed in the regulations as Senior MAX Masters. | 32+ | 385 lb | Rotax 125, with exhaust valve | Full-size |
KA100
| Class | Age | Min weight | Engine | Chassis |
|---|---|---|---|---|
| KA100 Junior | 12–16, competition age | 320 lb | KA100 | Full-size |
| KA100 Senior | 16+ | 360 lb | KA100 | Full-size |
| KA100 Master | 35+ | 390 lb | KA100 | Full-size |
Bracket
| Class | Age | Min weight | Engine | Chassis |
|---|---|---|---|---|
| Senior BracketGrouped by qualifying time, about 1.5 seconds. All three heats count. Tires and fuel are open. | 16+, competition age | No minimum published | Open, within the rulebook cc limits. No gearbox karts. | — |
Competition age is the age a driver will be on December 31 of that year. Attained age means the birthday has already happened. Age waivers do not travel between tracks. Rotax ages on this page are the age a driver reaches during the calendar year.