Yamaha YZ 250 F (CG 40) [2019] - WÖSSNER Pro Series forged pistons

WÖSSNER Pro Series forged pistons for Yamaha YZ 250 F (CG 40) [2019]

The WÖSSNER Pro Series forged piston is designed for the Yamaha YZ 250 F (CG 40) built in 2019. Its technical characteristics support a targeted selection suitable for the engine and bore size.

Execution and construction

The piston is made of aluminum and is forged. As a specific design feature, it has a forged double bridge. The version with 2 piston rings is clearly specified in the technical data.

Technical data

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

Vehicle assignment

The forged piston fits the Yamaha YZ 250 F (CG 40), built in 2019. The specified piston diameter of 76.96 mm, the bore diameter of 77.01 mm and the oversize +0.01 with the letter B are particularly important for the selection.

Note on selection

Before ordering, compare the dimensions mentioned, the compression ratio of 13.7:1 and the version with 2 piston rings with the requirements of your engine. This allows you to specifically determine the right piston specification for this vehicle.