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
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Replacement cylinder with top-end gasket kit for 450 cc 4-stroke engines
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Maintains standard bore and original engine configuration
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Direct replacement compatible with OEM components
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No piston included
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Plug-and-play installation with no engine modifications required
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High resistance to wear, heat, and mechanical stress
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Smooth cylinder surface for consistent engine operation
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Suitable for professional engine rebuilds and servicing
Specifications
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Bore diameter: 97 mm
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Displacement: 450 cc
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Cylinder material: aluminium with nickel-silicon (nickel-silicon carbide) coating
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Coating type: motor-nicksil
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Kit contents: cylinder and top-end gasket kit
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Part number: EC485-107
Vehicle Fitments
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Yamaha YZ 450F (2023–2026)
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Yamaha WR 450F (2024–2026)