Color Legend:

• Red: Canceled part - unavailable for any operations.
• Blue: Part of a kit - cannot be ordered individually.
• Gray (Dimmed): Disabled part - non-interactive for various reasons.
• Part Number : Superseded part - replaced by a newer part.

Description: - The pulse of your power plant is found in the RayZR B2UA Crankshaft & Piston assembly. This technical core features a factory-balanced Crankshaft Assy, precision Bearings, and the essential Key Woodruff. Piston force is generated by the Piston (STD), secured with a Pin Piston and Circlips, and optimized with the Piston Ring Set (STD) for high compression and zero oil consumption. For lubrication drive, the assembly includes a specialized Gear Pump Drive. Every component is engineered to work in perfect synchronization, eliminating engine vibration and maximizing fuel energy. Choosing genuine Yamaha internal rotating parts is the only way to safeguard your engine from premature fatigue. This assembly is a storyteller of mechanical strength, providing the purchase confidence and technical clarity that your RayZR’s internal power center is built from the finest alloys and engineered to the highest safety standards. Invest in this assembly to ensure your machine retains its signature smoothness and durability for countless urban adventures.