Yamaha YZ 450 F (CJ 03) [2003] - forged pistons

PROX forged pistons for Yamaha YZ 450 F (CJ 03), built in 2003

The PROX forged piston is designed for the Yamaha YZ 450 F (CJ 03) built in 2003. Its design made of a special aluminum alloy is designed to minimize friction and thus support reliable piston function.

Design and technical features

• Piston Type: Forged
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 94.96 mm
• Letter oversize: B
• Oversize: +0.01
• Piston rings: set
• Version: 4T
• Specificity: hollow piston / 5 valve pockets

The combination of forged design, standard compression and the specified piston geometry offers a clearly defined choice for repairing or overhauling the right engine. The hollow piston has 5 valve pockets; Diameter, oversize and code letter enable comparison with the intended engine dimensions.

Vehicle assignment

The forged piston is intended for the following vehicle:

• Yamaha YZ 450 F (CJ 03), built in 2003

Selection note

Before ordering, please compare the information on diameter Ø 94.96 mm, letter oversize B and oversize +0.01 with the required piston. The version is specified as 4T and comes with a piston ring set.