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

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

The VERTEX forged piston is designed as a component for the upper engine area of the Yamaha YZ 250 F (CG 21) built in 2005. Its technical characteristics support a targeted selection based on piston diameter, oversize and bore diameter.

Design and technical data

• Piston Type: Forged
• Material: aluminum
• Piston compression: high compression
• Diameter Ø: 76.95 mm
• Letter oversize: B
• Oversize: +0.01
• Bore diameter: 77.00 mm
• Rings Quantity: Set
• Stroke: 4T

Vehicle assignment

The forged piston is assigned to the Yamaha YZ 250 F (CG 21), built in 2005. The specified diameter of 76.95 mm, the oversize letter B and the bore diameter of 77.00 mm are particularly important for the selection.

Factual selection aid

The marking “B” describes the specified oversize. In addition, “+0.01” indicates the stated oversize value. The design as a forged aluminum piston with high compression must be taken into account together with the vehicle assignment and the dimensions when selecting parts. The entry “Rings Quantity: Set” identifies the ring quantity as a set.