CYLINDER KIT 97mm YAMAHA YZ 450F 23-26 ATHENA P400485100107 STD BORE
The Athena standard bore cylinder kit is designed for Yamaha YZ 450F and WR 450F 4-stroke models, providing a complete top-end rebuild solution that maintains original engine geometry, displacement, and operating characteristics. Supplied with a cylinder, forged piston, wrist pin, circlips, and full gasket set, the kit ensures OEM compatibility and reliable performance under demanding riding conditions.
Features
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Complete top-end rebuild kit for Yamaha 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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Plug-and-play installation with no modifications required
Specifications
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Bore diameter: 97 mm
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Displacement: 450 cc
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Cylinder material: high-silicon aluminium with wear-resistant coating
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Piston type: forged, CNC-machined
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Piston coating: molybdenum disulphide
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Head gasket type: multi-layer steel (MLS), stainless steel, laser-cut
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Kit contents: cylinder, piston, wrist pin, circlips, gasket kit
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Part number: P400485100107
Vehicle Fitments
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Yamaha YZ 450F (2023–2026)
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Yamaha WR 450F (2024–2026)