Yamaha WR 450 F (RE 45) [2018-2020] - WÖSSNER Pro Series forged pistons

WÖSSNER Pro Series forged pistons for Yamaha WR 450 F

The WÖSSNER Pro Series forged piston is a forged aluminum piston for the Yamaha WR 450 F (RE 45) in the full 2018-2020 model year range. The version is intended for motors with a bore diameter of 97.01 mm and has the letter for oversize 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
• Number of piston rings: 2
• Specificity: Gas passage / 3D shaped crown

Suitable for

The piston is assigned to the Yamaha WR 450 F (RE 45), built between 2018 and 2020. The specified diameter of 96.97 mm, the oversize +0.01, the code letter B and the bore diameter of 97.01 mm are particularly relevant for the selection.

Selection note

Before ordering, check whether the dimensions and design of the existing motor match the technical data listed. The compression ratio of 13.5:1 as well as the version with gas passage and 3D-shaped crown characterize this variant within the WÖSSNER Pro Series.