Yamaha YZ 250 F (CG 40) [2019-2021] - 4-stroke forged piston kit - ø77.00mm

WISECO 4-stroke forged piston kit for Yamaha YZ 250 F

The WISECO forged piston kit is designed for the Yamaha YZ 250 F (CG 40) built between 2019 and 2021. The version is intended for a 4-stroke engine and belongs to the top engine or piston range.

Technical features

• Material: aluminum
• Piston type: forged
• Piston compression: standard
• Diameter Ø: 76.97 mm
• Letter oversize: C
• Oversize: +0.02
• Compression ratio: 13.8:1
• Rings Quantity: Set
• Stroke: 4T

Vehicle assignment

The piston is assigned to the Yamaha YZ 250 F (CG 40), built in 2019-2021. This assignment supports selection based on model and complete year of manufacture.

Version for the engine structure

Thanks to the forged aluminum design and the specified compression ratio of 13.8:1, this piston kit is tailored to the specified engine variant. The standard piston compression and the diameter of 76.97 mm characterize the specific version. The oversize letter C and the oversize information +0.02 complement the technical selection features.

WISECO develops and manufactures forged pistons for various motorsport and powersport applications. This kit should only be selected based on the specified vehicle assignment and technical data.