Yamaha YZ 250 F (CG 33) [2010-2013] - forged pistons

PROX forged pistons for Yamaha YZ 250 F

The PROX forged piston is intended for the Yamaha YZ 250 F (CG 33) from the entire 2010-2013 model year range. As a component for the upper engine area, it combines a forged design with a piston geometry tailored to the respective engine.

Function and execution

The piston is made of aluminum and is a forged piston. The special alloy is designed to minimize friction and thus support reliable function. Standard piston compression makes selection easy for the specified vehicle assignment.

Technical data

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø: 76.95 mm
• Letter oversize: A
• Oversize: STD
• Piston ring design: set
• Stroke: 4T
• Specificity: Flat crown with raised top / 5 valve pockets

Vehicle assignment

Suitable for Yamaha YZ 250 F (CG 33), built between 2010 and 2013. The assignment refers to this model and this year of manufacture.

Selection note

When making the selection, the diameter of 76.95 mm, the letter of the oversize A and the STD version must be taken into account in particular. The technical information should be compared with the existing engine and the intended use before ordering.