RK racing chain and front and rear sprockets in 1 convenient package
High carbon alloy steel solid rollers, bushings, and pins
Heat treated and pre-stressed for maximum wear life and performance
Kit includes 520KZU ultra-ring chain with ultra-thin O-ring, the Baja winning 520SMO, MXZ XW-ring racing chains, or quality TZ or KZ series non O-ring chain
Rear sprockets made of 7075 T-6 aluminum, fronts made of case hardened steel