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

WÖSSNER Pro Series forged pistons for Yamaha YZ 450 F

The WÖSSNER Pro Series forged piston is designed for the Yamaha YZ 450 F (CJ 21) in the entire 2016-2017 model year range. The design combines a forged piston type with a piston diameter of 96.97 mm and the oversize marking B.

Design and technical features

• Material: aluminum
• Piston Type: Forged
• Diameter Ø: 96.97 mm
• Letter oversize: B
• Oversize: +0.01
• Bore diameter: 97.01mm
• Compression ratio: 13.5:1
• Rings Quantity: 2

Geometry

The piston design features a 3D molded crown and is provided with a “gas passage” specification. The compression ratio of 13.5:1 and the specified diameters support a precise selection based on the required engine data.

Vehicle assignment

The forged piston is intended for the Yamaha YZ 450 F (CJ 21), built in 2016-2017. This allows the selection to be tailored specifically to this vehicle and the specified year of manufacture.

Selection note

Before ordering, the diameter, bore diameter, oversize and compression ratio values should be compared with the requirements of the engine. Particular attention should be paid to the marking B and the oversize +0.01 dimension.