Athena Cylinder Kit for Yamaha YZ85 (P400485100038)

Upgrade your Yamaha YZ85 engine with the Athena P400485100038 Cylinder Kit, engineered for high-performance applications and dependable competition use. The kit features an aluminum cylinder with a nickel carbide coating designed to support durability, efficient heat transfer, and consistent performance. An aluminum cylinder head with a removable bronze dome is included to provide a serviceable, performance-focused top-end assembly.
The kit includes specially designed, high-performance hard-anodized power valves. These power valves are purpose-built for this Athena cylinder kit and cannot be used with the OEM cylinder or original equipment power-valve components. Proper installation and compatibility verification are recommended before assembly to ensure all included components are used as intended.
A complete Athena top-end gasket set is included with the required seals and hardware, simplifying installation and helping provide reliable sealing throughout the rebuilt top end. The piston kit includes a forged race piston, piston rings, clips, and wrist pin, delivering the essential components needed for a comprehensive performance-oriented top-end replacement. Use the Athena P400485100038 part number when confirming fitment and replacement-part compatibility for your YZ85 application.

Features:

• Aluminum cylinder with nickel carbide coating for durable, performance-oriented operation

• Aluminum cylinder head with removable bronze dome

• Specially designed, high-performance hard-anodized power valves

• Power valves are not compatible with OEM cylinder components

• Forged race piston kit includes piston, rings, clips, and wrist pin

• Athena top-end gasket set includes required seals and hardware

• Designed for Yamaha YZ85 applications

Ships from Parts Unlimited.