Yamaha YZ 250 (CG 23) [2006-2023] - cast piston

PROX cast piston for Yamaha YZ 250 (CG 23) 2006-2023

The PROX cast piston is designed as a replacement part for the Yamaha YZ 250 (CG 23) in the full year range from 2006 to 2023. Its cast aluminum design is suitable for replacement in equivalent original equipment quality.

Function and execution

The special alloy and manufacturing process support a balance between performance and reliability. A patented surface treatment reduces friction in the cylinder. The piston design includes a curved piston, a fin cutout, a suction hole and a MoS2 skirt coating.

Technical data

• Brand: PROX
• Component: cast piston
• Material: aluminum
• Piston Type: Cast
• Piston compression: standard
• Diameter Ø: 66.35 mm
• Letter oversize: A
• Oversize: STD
• Stroke: 2T

Vehicle assignment

The cast piston fits the Yamaha YZ 250 (CG 23), built between 2006 and 2023. The assignment refers to this vehicle model and the specified year of manufacture.

Selection guide

With the diameter Ø 66.35 mm, the standard piston compression and the marking A or STD, the piston offers clearly defined technical features for selection. Before ordering, the vehicle model, year of manufacture and the existing engine data should be compared with the specifications mentioned.