CYLINDER & GASKETS 97mm YAMAHA YZ 450F 23-26 ATHENA EC485-107 STD BORE

The Athena standard bore cylinder and gasket kit is designed for Yamaha YZ 450F and WR 450F 4-stroke models, providing a direct replacement cylinder solution that maintains original engine geometry, displacement, and performance. Supplied without a piston, this kit includes a high-quality aluminium cylinder with advanced coating and a complete top-end gasket set, ensuring OEM compatibility and reliable operation under demanding conditions.

Features

• Replacement cylinder with top-end gasket kit for 450 cc 4-stroke engines

• Maintains standard bore and original engine configuration

• Direct replacement compatible with OEM components

• No piston included

• Plug-and-play installation with no engine modifications required

• High resistance to wear, heat, and mechanical stress

• Smooth cylinder surface for consistent engine operation

• Suitable for professional engine rebuilds and servicing

Specifications

• Bore diameter: 97 mm

• Displacement: 450 cc

• Cylinder material: aluminium with nickel-silicon (nickel-silicon carbide) coating

• Coating type: motor-nicksil

• Kit contents: cylinder and top-end gasket kit

• Part number: EC485-107

Vehicle Fitments

• Yamaha YZ 450F (2023–2026)

• Yamaha WR 450F (2024–2026)