WOSSNER 77mm HC PISTON KIT B, YAMAHA WR250F 18-19, YZ250F 16-18, YZ250FX 17-19

Wossner high-compression forged pistons offer enhanced strength and heat dissipation, featuring an elliptical design that ensures uniform expansion and balanced thrust load distribution to prevent piston collapse. This model has a 77.01mm bore (76.96mm actual size) and a compression ratio of 14.4:1, designed for Yamaha YZ 250 F models from 2016 to 2018.

Features

• Forged for high durability and strength
• Elliptical profile ensures even expansion and load handling
• High-compression configuration
• Made in Germany

Specifications

• Bore Size: 77.01mm (actual 76.96mm)
• Compression Ratio: 14.4:1

Vehicle Fitments

• Yamaha YZ 250 F 2016–2018