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

PROX forged pistons for Yamaha YZ 250 F (CG 21), built in 2005

The PROX forged piston is tailored to 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. The forged design combines the defined piston shape with a clear technical assignment for the specified engine variant.

Technical features

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø: 76.96 mm
• Letter oversize: B
• Oversize: +0.01
• Rings Quantity: 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 making the selection, the diameter of 76.96 mm, the oversize B and the oversize +0.01 specification must be taken into account in particular.

Selection guide

The standard piston compression and the design as a hollow piston with 5 valve pockets characterize the technical variant. The value “4T” describes the specified stroke version. Please compare these features with the existing engine and required specifications before ordering.