PISTON KIT 97mm B FORGED 2010-2013 YAMAHA YZF450 NAMURA FX-40046-B

A forged piston kit in “B” size engineered to the OEM 12.5:1 compression ratio, featuring a 96.96 mm forged piston for a nominal 97.00 mm bore. Supplied complete with piston, ring set, wrist pin and circlips, it provides a direct replacement solution for the fuel-injected 449 cm³ engine of this period.

Features

• Forged aluminium construction for strength and durability
• Hard-anodised crown to improve heat resistance and reduce carbon build-up
• MOS2 (molybdenum disulphide) skirt coating to reduce friction and assist running-in
• 100% CNC-machined piston dome for precise combustion shape
• Supplied with piston, rings, wrist pin and circlips

Specifications

• Piston size: 96.96 mm (B size, +0.01 mm)
• Nominal bore: 97.00 mm
• Compression ratio: 12.5:1
• Configuration: 4-stroke single-cylinder
• Piston ring set: NX-40046R (reference)
• Approximate kit weight: 0.599 kg

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

• Yamaha YZ450F 2010–2013