CKT CLASS STRUCTURE: Overview
The Colorado Karting Tour is a regional racing series for competitive, high-performance go-kart racing in the state of Colorado. The sport of karting has traditionally separated racing classes on the basis of two primary factors:
- Age of the driver
- Minimum weight (of the kart and driver together)
Together, these two factors have driven the karting class structure for nearly 6 decades.
Thanks to the dedicated work of renowned sanctioning bodies such as the FIA, the International Karting Federation, and SKUSA, the class structure present today with CKT has been tailored to provide a progressive, safe, and reasonable progression for kart racers from the age of 5 and upward.
At The Colorado Karting Tour, we do our best to provide a racing class for all ages, experience levels, and racing budgets. Below is our 2023 list of racing classes, with a place for anyone age 5 and up to race.
*Note: ‘LBS’ denotes the minimum weight that the kart and driver must weigh upon exiting the racetrack after each racing event (driver, kart, and all safety equipment are weighed together).
Questions about a racing class? Contact us to learn details about any class listed.
2023 Colorado Karting Tour Approved Categories. Includes info on each category, age ranges allowed, engine platform utilized, primary rule set governing the category, minimum weight, tire compound, tire size, and fuel / oil required.| Category | Ages | Engine | Rule set | Min. Weight (lbs.) | Tire Compound | Tire Size(s) | Fuel / Oil |
|---|---|---|---|---|---|---|---|
| Kid Kart | 5-8 | Honda GXH50 | IKF | 150 | *(1 set)* Evinco Blue | 4.5 x 10-5 | Maverick 87 Ethanol Free / 10w30 Synthetic |
| Junior 1 | 7-13 | Briggs 206 (Blue Slide) | IKF | 240 | Evinco Blue | 4.5x10-5 | Maverick 87 Ethanol Free / 4T |
| Junior 2 | 12-16 | Briggs 206 (Black Slide) | IKF | 310 | Evinco Blue | 4.5 x 10-5 Front 6.0 x 11-5 Rear | Maverick 87 Ethanol Free / 4T |
| Micro Max | 7-11 | Rotax FR125 | Rotax | 235 | Evinco Blue | 4.5 x 10-5 | VP MS 93 / XPS |
| Mini Max | 10-13 | Rotax FR125 | Rotax | 255 | Evinco Blue | 4.5 x 10-5 | VP MS 93 / XPS |
| Junior Rotax | 12-16 | Rotax FR125 | Rotax | 320 | Evinco Blue | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP MS 93 / XPS |
| Senior Rotax | 15+ | Rotax FR-125 | Rotax | 360 | Evinco Red | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP MS 93 / XPS |
| Masters Rotax | 32+ | Rotax FR-125 | Rotax | 395 | Evinco Red | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP MS 93 / XPS |
| Open Tag | 15+ | 125cc 2-Cycle or 250cc 4-Stroke | IKF | 365 | Evinco Red | 4.5 x 10-5 Front 7.1 x 11-5 Rear | Unaltered Race Fuel / 2-Stroke Oil |
| 100 Senior | 15+ | IAME KA 100 | SKUSA | 355 | Evinco Blue | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP C-12 / Motul KGP 2T |
| 100 Senior | 15+ | ROK VLR 100 | ROK CUP USA | 355 | Evinco Blue | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP C-12 / Motul KGP 2T |
| 100 Masters | 30+ | IAME KA 100 | SKUSA | 390 | Evinco Blue | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP C-12 / Motul KGP 2T |
| 100 Masters | 30+ | ROK VLR 100 | ROK CUP USA | 390 | Evinco Blue | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP C-12 / Motul KGP 2T |
| Shifter | 15+ | CR125 (Stock Moto) | SKUSA | 385 | Evinco Red | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP C-12 / Motul KGP 2T |
| Shifter | 15+ | CR125 (Mod) | IKF | 395 | Evinco Red | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP C-12 / Motul KGP 2T |
| Shifter | 15+ | ROK Shifter | ROK | 395 | Evinco Red | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP C-12 / Motul KGP 2T |
| Shifter | 15+ | IAME 175cc / KZ | SKUSA / CIK FIA | 405 | Evinco Red | 4.5 x 10-5 Front 7.1 x 11-5 Rear | VP C-12 / Motul KGP 2T |
| 206 Light | 15+ | Briggs 206 (Black Slide) | IKF | 345 | MG RL2 | 4.5 x 10-5 Front 6.0 x 11-5 Rear | Maverick 87 Ethanol Free / 4T |
| 206 Heavy | 15+ | Briggs 206 (Black Slide) | IKF | 385 | MG RL2 | 4.5 x 10-5 Front 6.0 x 11-5 Rear | Maverick 87 Ethanol Free / 4T |
| 206 Masters | 40+ | Briggs 206 (Black Slide) | IKF | 405 | MG RL2 | 4.5 x 10-5 Front 6.0 x 11-5 Rear | Maverick 87 Ethanol Free / 4T |