The Evolve 32T Drive Gear Kit comes standard on all Evolve Street models. This drive gear has 32 teeth on the gear. You can use this kit to convert an All-terrain set up to a Street set up or as replacement for a worn set. The Evolve 32T Drive Gear Kit is suitable for the GT, GTX and GTR Series from Evolve. It is a complete set with 2x 32T Drive Gear (incl. bearings) & 2x adjusted size GT Drive Belts. See below an overview of the speeds you get with different drive gear sets.