The PDF rulebook version can be found at: http://www.hrkc.com/rules
Reference the NKA Tech Manual and HRKC Rule Book Sections for general rules pertaining to multiple
classes as follows:
Tires – HRKC Section 1.1
Fuel – HRKC Section 4.3
Comer C51 engine – NKA Section 30.5
B&S LO206 engine – NKA Section 40.6
B&S Flathead engine – NKA Section 40.3 and HRKC Section 4.12
B&S Animal engine – NKA Section 40.5 and HRKC Section 4.12
Clone engine – NKA Section 40.4
HF Predator engine – HRKC Section 13
KT 100 engine – NKA Section 30.2
| Class | Age | Weight | |
|---|---|---|---|
| 10.1 | Kid Karts (exhibition only - oval and road course) Reference HRKC Section 11 | 5-7 | 150 lbs |
| 10.2 | Novice Flat Kart (exhibition only) This class may not be run on a weekly basis and is reserved for new competitors with little or no karting experience and is used at the discretion of the race director. Flathead engine, Purple plate, open gear rule Clone engine, Red plate, small pipe, open gear rule Animal engine, Purple plate, open gear rule Predator engine, 15t driver gear, 68t rear gear | 7-10 | 265 lbs |
| 10.3 | Amateur Flat Kart (exhibition only) This class may not be run on a weekly basis and is reserved for new competitors with little or no karting experience and is used at the discretion of the race director. Flathead engine, Blue plate, open gear rule Clone engine, Purple plate, small pipe, open gear rule Animal engine, Blue plate, open gear rule Predator engine, 16t driver gear, 64t rear gear | 10-14 | 290 lbs |
| 10.4 | Jr Sportsman 1 (Junior 1 Flat kart) - Flathead Flathead engine, methanol, Purple Plate, open gear No steering fairings permitted. | 7-10 | 265 lbs |
| 10.5 | Jr Sportsman 1 (Junior 1 Flat Kart) – Animal Animal engine, methanol, Purple Plate, open gear No steering fairings permitted. | 7-10 | 265 lbs |
| 10.6 | Jr Sportsman 1 (Junior 1 Flat Kart) – Clone Clone engine, gasoline, Red plate, small pipe, open gear No steering fairings permitted. | 7-10 | 265 lbs |
| 10.7 | Jr Sportsman 1 (Junior 1 Flat Kart) – Predator Predator engine, gasoline, 15t driver gear, 68t rear gear. No steering fairings permitted. | 7-10 | 265 lbs |
| 10.8 | Jr Sportsman 2 (Junior 2 Flat kart) – Flathead/Animal Flathead engine, methanol, Blue plate, open gear No steering fairings permitted. | 10-12 | 290 lbs |
| 10.9 | Jr Sportsman 2 (Junior 2 Flat Kart) – Clone Clone engine, gasoline, Purple plate, small pipe, open gear. No steering fairings permitted. | 10-12 | 290 lbs |
| 10.10 | Jr Sportsman 2 (Junior 2 Flat Kart) – Predator Predator engine, gasoline, 16t driver gear, 64t rear gear No steering fairings permitted. | 10-12 | 290 lbs |
| 10.11 | Jr Restricted (Junior 3 Flat kart) – Flathead Flathead engine, methanol, Gold plate, open gear | 12-15 | 320 lbs |
| 10.12 | Jr Restricted (Junior 3 Flat Kart) – Animal Animal engine, methanol, Gold plate, open gear | 12-15 | 320 lbs |
| 10.13 | Jr Restricted (Junior 3 Flat Kart) – Clone Clone engine, gasoline, Blue plate, small pipe, open gear | 12-15 | 320 lbs |
| 10.14 | Jr Restricted (Junior 3 Flat Kart) – Predator Predator engine, gasoline, 17t driver gear, 60t rear gear | 12-15 | 320 lbs |
| 10.15 | Powder Puff Predator Predator engine, gasoline, open gear | 15-Up | 325 lbs |
| 10.16 | Stock Medium Flathead (Flat Kart) Flathead engine, methanol, unrestricted, open gear | 15-Up | 350 lbs |
| 10.17 | Stock Medium Animal (Flat Kart) Animal engine, methanol, unrestricted, open gear | 15-Up | 350 lbs |
| 10.18 | Stock Medium Clone (Flat Kart) Clone engine, gasoline, unrestricted, big pipe, open gear | 15-Up | 350 lbs |
| 10.19 | Stock Heavy Flathead (Flat Kart) Flathead engine, methanol, unrestricted, open gear | 15-Up | 375 lbs |
| 10.20 | Stock Heavy Animal (Flat Kart) Animal engine, methanol, unrestricted, open gear | 15-Up | 375 lbs |
| 10.21 | Stock Heavy Clone (Flat Kart) Clone engine, gasoline, unrestricted, big pipe, open gear | 15-Up | 375 lbs |
| 10.22 | Predator 375 (Flat Kart) Predator engine, gasoline, open gear | 15-Up | 375 lbs |
| 10.23 | Stock Super Heavy Flathead (Flat Kart) Flathead engine, methanol, unrestricted, open gear 200 lb. minimum driver weight (as raced) | 15-Up | 400 lbs |
| 10.24 | Stock Super Heavy Animal (Flat Kart) Animal engine, methanol, unrestricted, open gear 200 lb. minimum driver weight (as raced) | 15-Up | 400 lbs |
| 10.25 | Stock Super Heavy Clone (Flat Kart) Clone engine, gasoline, unrestricted, big pipe, open gear 200 lb. minimum driver weight (as raced) | 15-Up | 400 lbs |
| 10.26 | Predator 425 (Flat Kart) Predator engine, gasoline, open gear 200 lb. minimum driver weight (as raced) | 15-Up | 425 lbs |
| 10.27 | Cadet (road course) B&S LO206 with PZ Model 22 carburetor, Junior LO206 green slide, RLV #5506, 5507 or 5511 exhausts, gasoline. Tires-Open compound, size 10 X (4.50-4.60) X 5. | 7-11 | 265 lbs |
| 10.28 | Yamaha Junior (road course) Yamaha KT-100 or Piston Port engine with a Walbro WB3A carburetor, RLV-SSX-V #7548 (Can) exhaust | 12-15 | 320 lbs |
| 10.29 | Open 4 Cycle (road course) Any OEM 6.5 HP or less engine, gasoline | 15-Up | 325 lbs |
| 10.30 | Shifter/TAG (Touch and Go) (road course) 80cc or 125cc NKA legal kart engines. Minimum weight, postrace for 80cc - 375 lbs., 125cc - 395 lbs. Fixed open exhaust (no slippy pipes), 2-stroke | 15-Up | 375/395 lbs |
| 10.31 | 2 Cycle Yamaha/Piston Port (road course) Yamaha KT-100 or Piston Port engine. Must be NKA legal. Fixed open exhaust (no slippy pipes), 2-stroke | 15-Up | 345 lbs |
| 10.32 | Junior Sportsman Champ (Jr Champ Kart) Predator engine, gasoline, 16t driver gear, 60t rear gear. Both Junior and Senior Champ Kart chassis are permitted. | 7-14 | 330 lbs |
| 10.33 | Senior Champ Kart – Flathead Flathead engine, methanol, unrestricted, open gear | 15-Up | 425 lbs |
| 10.34 | Senior Champ Kart – Animal Animal engine, methanol, unrestricted, open gear | 15-Up | 425 lbs |
| 10.35 | Senior Champ Kart – Clone Clone engine, gasoline, unrestricted, big pipe, open gear | 15-Up | 425 lbs |
| 10.36 | Senior Champ Kart – Predator Predator engine, gasoline, open gear | 15-Up | 425 lbs |
| 10.37 | HRKC Pro Wing Series (speedway) Flathead engine, methanol, unrestricted, open gear. No axle clutches. Spec tire per HRKC Section 12. Mirrors are optional. Refer to NKA Tech Manual, Section 20.4 | 15-Up | 425 lbs |
Note 1 If classes do not grow to 3 or more entries within 4 races they may be dropped or combined with another class and scored separately.
Note 2 Classes may be added, deleted, combined, or changed during the year, as demand requires. Weights are also subject to change, as determined by the HRKC Race Committee.
Note 3 Competitors who advance out of the Novice/Amateur or a junior class may not return to that class without special permission of the HRKC Race Committee.
Note 4 For any class that has a class sponsor, the sponsor’s decal must be displayed on the kart or the competitor will not be allowed to compete in the feature and will not receive points. This applies to HRKC members only.
Note 5 Novice and Amateur classes are not for drivers to remain in for extended periods of time. They are designed just for drivers with no previous experience to get familiar with their kart/kar and the race day procedures. HRKC recommends that drivers move up to their respective classes after a max of 6 races in the Novice or Amateur divisions. Exceptions to this rule must be discussed and granted by
the HRKC Race Committee.
Note 7 All weights posted above are minimum weights post qualifying, Heat Race or Feature Race events.
Note 8 Powder Puff is a class strictly for female drivers.