A forged piston kit designed to match the OEM 12.5:1 compression ratio with a nominal 97.00 mm bore. The kit includes the piston, ring set, wrist pin and circlips, providing a direct replacement solution for engines using the fuel-injected 449 cm³ platform of this period.

Features

• Forged aluminium construction for increased strength


• Hard-anodised crown to resist heat and reduce carbon build-up


• MOS2 (molybdenum disulphide) skirt coating to reduce friction and aid running-in


• 100% CNC-machined piston dome


• Supplied with piston, ring set, wrist pin and circlips

Specifications

• Application bore: 97.00 mm (YZ450F nominal)


• Compression ratio: 12.5:1 (OEM equivalent)


• Engine type: 4-stroke single


• Intended use: 2010–2013 fuel-injected YZ450F platform

Cross-Reference OEM Part Numbers

• 33D-116A0-00-00


• 33D-11631-00-00


• 33D-11603-00-00


• 33D-11633-00-00


• 93450-19052-00

Vehicle Fitments

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  Yamaha YZ450F 2010–2013