Yamaha YZ 450 F (CJ 23) [2019] - forged pistons

PROX forged pistons for Yamaha YZ 450 F (CJ 23)

The PROX forged piston is intended for the Yamaha YZ 450 F (CJ 23) in the entire 2019 to 2019 model year range. The design combines a forged aluminum piston with standard compression and OEM-compliant quality.

Function and execution

The aluminum alloy used is designed to reduce friction and support piston reliability. The flat crown with raised top and four valve pockets correspond to the specified piston specification for this vehicle.

Technical data

• Brand: PROX
• Piston Type: Forged
• Material: aluminum
• Diameter: Ø 96.95 mm
• Piston compression: standard
• Letter oversize: A
• Oversize: STD
• Piston rings: set
• Hub version: 4T
• Piston shape: Flat crown with raised top / 4 valve pockets

Vehicle assignment

Suitable for the Yamaha YZ 450 F (CJ 23), built in 2019. The assignment refers to this model and this year of manufacture.

Selection note

When making the selection, the diameter of 96.95 mm, the marking A and the STD version must be taken into account in particular. The standard compression and the 4T version round off the vehicle-specific features of this forged piston.