Yamaha WR 250 F (RE 25) [2016-2017] - WÖSSNER Pro Series forged pistons

WÖSSNER Pro Series forged pistons for Yamaha WR 250 F

The WÖSSNER Pro Series forged piston is designed as a forged aluminum version and is intended for use in the upper engine area of the Yamaha WR 250 F (RE 25). The specified dimensions and characteristics make it easier to select a suitable piston for the specified vehicle version.

Technical features

• Material: aluminum
• Piston Type: Forged
• Specificity: Forged double bridge
• Diameter Ø: 76.96 mm
• Letter oversize: B
• Oversize: +0.01
• Bore diameter: 77.01mm
• Compression ratio: 13.7:1
• Quantity: 2 rings
• Stroke: 2T

Vehicle assignment

The piston fits the Yamaha WR 250 F (RE 25), built between 2016 and 2017. Before making your selection, please compare the diameter, bore diameter and the “B” marking with the requirements of your engine.

Execution for engine selection

The combination of forged aluminum construction, double bridge, 76.96 mm diameter and 77.01 mm bore diameter describes the specific design of this piston. The compression ratio of 13.7:1 and the information “Stroke: 2T” complement the technical selection features. In this way, the relevant data can be specifically compared with the intended vehicle and engine before ordering.