Yamaha YZ 426 F (CJ 01) [2000-2002] - WÖSSNER forged pistons

WÖSSNER forged pistons for Yamaha YZ 426 F

The WÖSSNER forged piston is assigned to the vehicle assignment Yamaha YZ 426 F (CJ 01) for the entire model year range 2000-2002. The design combines an aluminum piston with a forged design and defined dimensions for selecting the right engine part.

Design and dimensions

• Material: aluminum
• Piston Type: Forged
• Diameter Ø: 94.98 mm
• Letter oversize: C
• Oversize: +0.02
• Bore diameter: 95.02mm
• Compression ratio: 12.5:1
• Rings Quantity: 3
• Stroke: 2T

Vehicle assignment

The piston is intended for the Yamaha YZ 426 F (CJ 01), built between 2000 and 2002. The information on diameter, oversize and bore diameter supports the comparison with the existing motor version.

Technical selection

The diameter of 94.98 mm, the oversize +0.02 with the letter C and the bore diameter of 95.02 mm are particularly important for the assignment. The compression ratio is 12.5:1. The version is specified with 3 rings and has the technical information “Stroke: 2T”.