Yamaha YZ 250 F (CG 27) [2007-2009] - WÖSSNER forged pistons

WÖSSNER forged pistons for Yamaha YZ 250 F (CG 27)

The WÖSSNER forged piston is designed for the Yamaha YZ 250 F (CG 27) from the years 2007 to 2009. This allows the selection to be made specifically based on model, series and year of manufacture.

Design and technical features

The piston is made of aluminum and is a forged version with a double bridge. The technical dimensions and characteristics support a precise assignment to the specified vehicle configuration.

• Material: aluminum
• Piston Type: Forged
• Version: Forged double bridge
• Diameter Ø: 76.96 mm
• Bore diameter: 77.00 mm
• Compression ratio: 13.5:1
• Number of piston rings: 3
• Letter oversize: A
• Oversize: STD

Vehicle assignment

Suitable for the Yamaha YZ 250 F (CG 27), built between 2007 and 2009. Before making your selection, please compare the model name, year of manufacture and the specified piston and bore dimensions with the existing engine.

Selection note

The piston diameter of 76.96 mm, the bore diameter of 77.00 mm and the marking with the letter A are decisive for the assignment. The “STD” version is listed as an oversize specification. The combination of forged double bridge, 13.5:1 compression ratio and 3 piston rings describes the technical design of this piston.