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 an aluminum piston for the Yamaha WR 250 F (RE 25) built between 2016 and 2017. The technical characteristics support a targeted selection based on piston diameter, bore size, compression ratio and design.

Design and technical data

• Material: aluminum
• Piston Type: Forged
• Diameter Ø: 76.95 mm
• Bore diameter: 77.00 mm
• Compression ratio: 14.5:1
• Number of rings: 2
• Letter oversize: A
• Oversize: STD

Constructive features

The Pro Series version features a double forged bridge, gas ports and a 3D crown. These features describe the specific design of the forged piston and make it easier to compare it with the engine requirements.

Vehicle assignment

The piston is assigned to the Yamaha WR 250 F (RE 25), built in 2016-2017. To make a suitable selection, the specified diameter of 76.95 mm, the bore diameter of 77.00 mm and the markings “A” and “STD” must be taken into account.

Technical selection

Before ordering, the vehicle name, the complete year of manufacture and the listed dimensions should be compared with the existing engine. This means that the design can be clearly classified based on the verified piston data.