Single Wheel Bearing 6203 2RS 17 x 40 x 12mm Unit Front/Rear 40mm Chrome Steel

Backrest Type. The engine bearing in a motorcycle is a critical component that supports and allows the smooth rotation of the engine's moving parts, such as the crankshaft and camshaft. Engine bearings are typically made from durable materials like steel or bronze and are designed to withstand high temperatures and pressures.