Yamaha YZ 250 F (CG 27) [2008-2009] - forged pistons

PROX forged pistons for Yamaha YZ 250 F (CG 27) 2008-2009

The PROX forged piston is tailored to the Yamaha YZ 250 F (CG 27) in the entire 2008-2009 model year range. Its forged aluminum design combines the specified dimensions with a structural design for 4T use.

Function and execution

The special alloy is designed to minimize friction and thus support reliable piston function. The flat crown with raised top and five valve pockets form the specific piston shape of this model.

Technical data

• Brand: PROX
• Piston Type: Forged
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 76.97 mm
• Letter oversize: C
• Oversize: +0.02
• Rings Quantity: Set
• Stroke: 4T
• Specificity: Flat crown with raised top / 5 valve pockets

Vehicle assignment

The forged piston is intended for the Yamaha YZ 250 F (CG 27), built in 2008-2009. The assignment supports the selection based on model, year of manufacture, piston diameter and oversize +0.02.

Selection note

Before ordering, check the required dimensions and the C marking so that diameter 76.97 mm and oversize +0.02 match the intended engine revision.