Yamaha YZ 450 F (CJ 21) [2016-2017] - forged pistons

VERTEX forged pistons for Yamaha YZ 450 F (CJ 21)

The VERTEX forged piston is designed for the Yamaha YZ 450 F (CJ 21) built in 2016-2017. Its forged aluminum design combines precise manufacturing with a clearly defined high-compression configuration for suitable use in the 4T engine.

Function and execution

The piston has a diameter of 96.95 mm and a compression ratio of 13.5:1. The version is marked as oversize with the letter B and an oversize value of +0.01. This allows the relevant dimensions to be specifically taken into account when making the selection.

Technical data

• Brand: VERTEX
• Piston type: forged
• Material: aluminum
• Piston compression: highly compressed
• High compression: 13.5:1
• Diameter Ø: 96.95 mm
• Letter oversize: B
• Oversize: +0.01
• Bore diameter: 97.00 mm
• Piston rings: set
• Stroke: 4T

Vehicle assignment

The forged piston fits the Yamaha YZ 450 F (CJ 21), built between 2016 and 2017. The selection should be based on the complete vehicle model, year of manufacture and the specified piston and bore dimensions.

Note on selection

When making the assignment, pay particular attention to the piston diameter of 96.95 mm, the bore diameter of 97.00 mm, the oversize B and the oversize value +0.01. The forged VERTEX version is tailored to these technical specifications.