Mojo D3 – Premier Kart Tires Mojo D3 kart tires differ slightly from the Mojo D2 series of racing tires used in Max Sr. and Jr. level competition, and have been specifically selected by the Rotax® Max Challenge series for use with Rotax® DD2-125 homologated kart chassis. The increased horsepower of the DD2 direct-drive engine merited a higher-performance tire compound, and the RMAX officials deemed that Mojo D3 kart tires offered what was needed and what they were looking for. If you are planning on competing in the Rotax® Max DD2-125 Challenge, we can help ensure you have the gear that you need, including a set (or two) of Mojo D3 kart tires, a kart suit, racing helmet, driving gloves, rib vest, and racing shoes. Depending on your involvement with the sport, it may also be a good idea to have a set of Mojo W3 rain tires as well. If you would like to purchase this item, please feel free to place it in your shopping cart or contact us for assistance – we would be happy to help. Mojo D3 Kart Tires and More at K1 Race Gear At K1 Race Gear, we carry an extensive line of kart parts and karting equipment to meet the needs of our customers. In addition to Mojo D3 kart tires – which we highly recommend regardless of whether or not you compete in the RMAX series – we carry Douglas wheels, CRG kart chassis, MyChron 4 data loggers, Kart Master™ kart parts, Rotax® engines, and even GoPro HERO Wide cameras so that you can record your races. If you would like to optimize the performance of your kart, we carry the components that you need to fine-tune your setup and extract that extra bit of speed needed to best the competition, and if you are new to the sport, we offer what you need to get started. You can depend on K1 Race Gear for your karting needs! FRONT 4.5" BACK 7.1" SET 2 x Front 4.5" and 2 x Back 7.1"