Seller notes

Athena Standard Bore Cylinder Kit 47.5mm YAMAHA YZ85 2019-2023 Aluminum cylinder is nickel carbide coated designed with larger water jackets Specially designed, high performance, hard anodized power valves (cannot use OEM) There is an aluminum cylinder head with a removable bronze dome allowing for a higher compression ratio and anti-detonation features (except where noted) Kit also includes a Cast-Lite flat top piston kit, and an Athena top-end gasket set that includes required seals and hardwa...

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