Yamaha YZ 250 F (CG 39) [2017-2018] - WÖSSNER forged pistons

WÖSSNER forged pistons for Yamaha YZ 250 F (CG 39)

The WÖSSNER forged piston is designed for the Yamaha YZ 250 F (CG 39) built in 2017-2018. The technical design offers clearly defined dimensions and characteristics for a targeted selection within the appropriate vehicle assignment.

Execution and properties

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Compression ratio: 13.7:1

As a forged aluminum version, the piston combines the specified material and design features with the specified dimensions. The compression ratio of 13.7:1 describes the intended technical specification of this piston.

Dimensions and oversize

• Diameter Ø: 76.97 mm
• Letter oversize: C
• Oversize: +0.02
• Bore diameter: 77.02mm

The dimensions make it easier to compare with the relevant engine data. The diameter of 76.97 mm, the bore diameter of 77.02 mm and the marking C and oversize +0.02 are particularly important for the selection.

Vehicle assignment

Suitable for the Yamaha YZ 250 F (CG 39), built between 2017 and 2018.