Yamaha YZ 250 F (CG 21) [2005] - forged pistons

PROX forged pistons for the Yamaha YZ 250 F (CG 21) from 2005

The PROX forged piston is designed as a piston for the engine of the Yamaha YZ 250 F (CG 21), built in 2005. Its special aluminum alloy is designed to minimize friction and thus support reliable piston function.

Execution and function

The forged design and the design as a hollow piston with 5 valve pockets characterize the design. The piston is designed with a standard compression and is therefore suitable for the corresponding original design of the vehicle mentioned.

Technical data

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø: 76.97 mm
• Letter oversize: C
• Oversize: +0.02
• Piston rings: set
• Stroke: 4T
• Specificity: hollow piston / 5 valve pockets

Vehicle assignment

The forged piston is assigned to the Yamaha YZ 250 F (CG 21), built in 2005. When selecting, the specified piston size of 76.97 mm, the oversize letter C and the oversize +0.02 version must be taken into account.