Koene.com Online Kart Store for the USA. Official dealer for Tony Kart, OTK Kart Parts, TonyKart, Kosmic, FA, Exprit Kart, Vortex Engines and Bridgestone tires. World class engine Tuning, Rebuilding, Dyno Testing for all type engines. Koene USA also runs a small team nation wide participating in Skusa and the Rok Cup USA. Koene USA is the sister company of Koene.com and runs on the same platform. Koene gained experience through its long history within Motorsport and karting industry and is able to offer you great service and support. We offer a large collection and ship Nation wide. All major credit cards are accepted.