Yamaha WR 250 F (CG 11) [2001-2002] - forged pistons

PROX forged piston for Yamaha WR 250 F (CG 11)

The PROX forged piston is designed for the Yamaha WR 250 F (CG 11) built in 2001-2002. Its forged design is based on a special alloy that minimizes friction and is therefore aimed at reliable engine operation.

Execution and properties

The piston is made of aluminum and has standard compression. The design as a hollow piston with 5 valve pockets takes into account the specified engine configuration. The diameter is Ø 76.95 mm. The letter for the oversize is A, while the oversize version is designated STD.

• Piston Type: Forged
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 76.95 mm
• Letter oversize: A
• Oversize: STD
• Rings Quantity: Set
• Stroke: 4T
• Specificity: hollow piston / 5 valve pockets

Vehicle assignment

The forged piston is assigned to the Yamaha WR 250 F (CG 11) in the full 2001-2002 model year range. Please compare the model name, year of manufacture and technical dimensions with the existing engine before making your selection.

Factual note

The diameter Ø 76.95 mm, the marking A and the STD version are particularly important for the selection. The technical characteristics of the piston are related to this vehicle assignment.