All Balls Racing – Wheel Bearing & Seal Kits - Yamaha, including a rear wheel bearing kit for the 84-85 Yamaha YT60, and front kits for the 76-78 Yamaha RD400 and 09-10 TMAX XP500. Every kit pairs the correct bearings with the seals that protect them, which is the only way a hub stays sealed after service. Wheel bearings are simple until they are not: once the seal lip hardens, water and road grit get in, the races pit and the wheel develops play you can feel as a wobble at speed, a droning noise that changes with lean angle, or a rotor that walks in the caliper. On an old two-stroke RD400 or a heavy TMAX scooter that play also chews the axle spacers and hub bore if you leave it. New bearings and seals restore a true-running wheel, honest brake feel and steering that tracks straight. Correct wheel bearing and seal kits also keep the hub grease where it belongs through washing and wet miles. Fit them with a driver on the outer race, never the inner, and they run quiet and true. Bearing sizes change by year and by front or rear position, so give us your model and we will confirm the right Yamaha bearing kit before you order.