Forged “B” size piston kit in the standard 77.00 mm bore with a hard-anodised crown and MOS2 low-friction skirt coating, supplied complete for one cylinder as a precise replacement component for routine rebuilds.

Features

• Forged aluminium piston for strength under sustained thermal load


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


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


• Precision CNC-machined crown for consistent combustion shape


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

Specifications

• Bore size: 77.00 mm (standard)


• Size grade: B


• Piston type: Forged aluminium


• Kit quantity: One cylinder (piston, rings, wrist pin, two circlips)


• Manufacturer reference: FX-40032-B


• Approximate weight: 0.346 kg

Cross-Reference OEM Part Numbers

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  FX-40032-B

  
  

Vehicle Fitments

• Yamaha YZ250F 2001–2004


• Yamaha WR250F 2001–2004