The Open 2-Stroke Championship presented by Word Racing.

Inclusive Rules Formula open to nearly all types of 2-stroke karts

Shifter Kart TechThe Open 2-Stroke Championship was created in 2016 to bring back the fun and participation in local kart racing. With a focus on making the fast 2-stroke classes affordable and open to most all types of 2-cycle engines, we are giving people a place to race competitively with either older “obsolete” engines, or the latest engines. Professionally run and coordinated with our local tracks, and grass-roots focused. We welcome all levels of Karters from the weekend warrior simply looking to hangout with his friends and have a great time, to the semi-pro Karter looking for competition and track time to prepare for big events such as the SKUSA Super Nationals and ROK Cup USA. This is a series that keeps costs to a minimum, and where camaraderie off the track and wheel-to-wheel competition on the track is the rule.

Click link below for PDF document explaining class weights, fuel, tires, etc.

The 2022 O2s Supplemental Technical Regulations manual


We require a driver information form for anyone new to the series - similar to a registration form.

2022 O2s Driver Information Form & Sign-up


O2s Championship classes are as follows:

- Shifter Open (KZ) -- Homologated /KZ engines and Modified Hondas

- Shifter Stock (Honda/ROK) Heavy & Light -- Honda Stock Moto (open reeds & pipe '99 & '01 Honda CR125) and Stock ROK. Also includes SGM L198 and SL204.

- O2s100 -- ROK VLR, KA100, X100AC, KT100* - Jr 310, Sr 350, Mstr 380.

- TaG Masters -- X30, X125T, Leopard, Rotax, Vortex ROK, Dragon, etc.

- TaG Sr. -- X30, X125T, Vortex ROK, Leopard, Rotax, etc.

- TaG Jr. -- X30, X125T, Vortex ROK, Leopard, Rotax, etc.

- TaG Cadet -- Mini/Micro Swift, Jr 1/2 restricted X125T, Vortex ROK, Rotax, 100cc Leopard, etc.

*See the Supplemental Technical Regulations manual for complete list of engines and weights

Copyright © 2016-2022 - All Rights Reserved - Web Design & Hosting by WORD Marketing