DID/PBR Chain Kit 520VX3 13/52 Standard - Ultra-Light Rear Sprocket The Twin Air PowerCover is

The Twin Air PowerCover is an innovative solution that has been specially developed to optimize the air supply to the air filter box of modern motorbikes such as the Yamaha YZ250F

Better fluid flow and therefore better engine cooling

Carefully remove your old filter cover taking care not to damage the sealing face on the crankcase

Cylinder lining coated in silicon carbide

All fiber plates use organic non-abrasive materials to avoid damage to rest of engine as plate materials break down and are circulated through engine by oil manufactured to OE specs using high quality materials

DID/PBR Chain Kit 520VX3 13/52 Standard - Ultra-Light Rear Sprocket The Twin Air PowerCover isPBR chain set with steel standard sprocket, and the following sprocket alternatives: Ultra Light aluminum hard anodized sprocket Ultralight rear sprocket Ultralight hard anodized rear sprocket Ultralight, self cleaning, hard anodized sprocket and D. I. D 520VX3 X Ring Chain 520 (see scope of delivery) For outstanding performance and durability: The PBR chain set consists of the robust PBR steel standard sprocket, a high strength PBR sprocket, which is