About us

Viper Kart, the Rental Kart Division of OTK Kart Group

OTK Kart Group, with over 40 years of history and a world leader in racing kart production, has an innovative range of rental karting products and services called Viper Kart since 2020. In the Prevalle facilities in Italy, the OTK Rental Kart Division conceives, designs, and manufactures every single detail of its products, following the “100% Made in OTK” philosophy.

Winning history

OTK Kart Group has won, among others, 59 world titles, the result of a knowhow that also brings innovation to the Rental Kart Division

8 Racing kart brands

OTK Kart Group’s global presence (in over 90 countries) is also ensured by a variety of chassis brands: Tony Kart, LN Racing Kart, CS55 Racing Kart, Kosmic Kart, Exprit Kart, Gillard Kart, EOS Kart, and Redspeed Kart.

Engine manufacturer

OTK Kart Group also has an Engine Division that produces two distinct product lines: Vortex Engines and ROK Engines. Furthermore, starting in 2025, TM Kart, a world-class manufacturer of racing kart engines, also joined the Group. OTK’s Engine Division has also developed an entire electric powertrain for the Viper Kart product line.

Kart tyre manufacturer

OTK Kart Group’s status as a comprehensive karting manufacturer is also demonstrated by its Tyre Division, represented by Vega, the leading kart tire manufacturer, which offers a product range that spans racing and rental tyres.

Event organizer

OTK Kart Group, with its Management & Promotion Events division, is capable of managing events with over 400 drivers, as demonstrated every year for over twenty years by the ROK Cup’s flagship event, the ROK Cup Superfinal.

Need to know

All OTK Kart Group know-how at the service of your business

Production technologies

All Viper Kart production phases are carried out using specific, high-precision machinery and Robotic and automated processes. This approach allows…

Advanced quality control

OTK Kart Group applies a “rigorous quality-control programme” during the entire Viper Kart production process. From incoming raw materials testing…

Safety technologies

The safety systems fitted to all Viper Karts are studied, designed and tested by a dedicated team, using simulations and on-track testing rather than instrumental testing…

Innovation and development

Viper Kart products take shape before they reach production, in the technical office, where OTK Kart Group engineers design every detail using 2D and 3D models….

Viper Kart for newcomers

Discover more

Viper Kart for those
who already have a facility