Yamaha WR 250 F (RE 25) [2018] - WÖSSNER Pro Series forged pistons

WÖSSNER Pro Series forged pistons for Yamaha WR 250 F

The WÖSSNER Pro Series forged piston is designed for the Yamaha WR 250 F (RE 25), built in 2018. As a forged aluminum version, it is intended for use in the upper engine range and offers a precisely defined technical design for the specified vehicle assignment.

Technical features

• Piston Type: Forged
• Material: aluminum
• Diameter Ø: 76.95 mm
• Letter oversize: A
• Oversize: STD
• Bore diameter: 77.00 mm
• Compression ratio: 13.7:1
• Rings Quantity: 2
• Stroke: 2T
• Specificity: Forged double bridge

Vehicle assignment

The forged piston fits the Yamaha WR 250 F (RE 25), built in 2018. The vehicle assignment enables a targeted selection for this model and this complete year range.

Selection guide

The piston diameter of 76.95 mm, the bore diameter of 77.00 mm, the oversize letter A and the Oversize STD marking are particularly relevant for the assignment. The compression ratio of 13.7:1 and the forged double bridge complement the technical design of the piston.