Yamaha YZ 250 F (CG 21) [2005] - forged pistons

VERTEX forged pistons for Yamaha YZ 250 F (CG 21) 2005

The VERTEX forged piston is designed as a high-compression piston version for the 4T engine of the Yamaha YZ 250 F (CG 21) built in 2005. The aluminum version combines the specified dimensions with a forged design and is suitable for the targeted selection of a suitable piston based on the technical characteristics.

Function and execution

The piston works with a high compression and is delivered as a three-ring design. The piston rings are provided as a set. Piston diameter, bore diameter and the specified oversize marking are particularly relevant for selection and assignment.

• Piston type: forged
• Material: aluminum
• Piston compression: highly compressed
• Piston diameter: Ø 76.94 mm
• Letter oversize: A
• Oversize: STD
• Bore diameter: 77.00 mm
• Piston rings: set, three rings
• Engine version: 4T

Vehicle assignment

The forged piston is assigned to the Yamaha YZ 250 F (CG 21), built in 2005. Before making your selection, please compare the dimensions and markings mentioned with the existing engine version.

Technical selection aid

The combination of Ø 76.94 mm piston diameter, 77.00 mm bore diameter, oversize letter A and the STD marking supports precise assignment within the intended design. The information should be taken into account together when ordering.