Yamaha WR 426 F (CJ 02) [2001-2002] - WÖSSNER forged pistons

WÖSSNER forged pistons for Yamaha WR 426 F

The WÖSSNER forged piston is assigned to the Yamaha WR 426 F (CJ 02) from the entire 2001-2002 model year range. This allows the piston to be specifically selected based on the vehicle model and year of manufacture.

Design and technical data

• Piston Type: Forged
• Material: aluminum
• Diameter Ø: 94.96 mm
• Bore diameter: 95.00 mm
• Letter oversize: A
• Oversize: STD
• Compression ratio: 12.5:1
• Number of piston rings: 3

Vehicle assignment

The forged piston is assigned to the Yamaha WR 426 F (CJ 02), built in 2001–2002. Before making your selection, please compare the specified piston diameter of 94.96 mm, the bore diameter of 95.00 mm and the markings “A” and “STD” with the requirements of your engine.

Selection based on engine data

The compression ratio of 12.5:1 and the design with three piston rings are among the key technical characteristics of this piston. The combination of forged aluminum pistons, the specified diameters and the vehicle assignment supports a precise selection of the right engine.