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 intended for the Yamaha YZ 250 (CG 23) in the entire model year range from 2006 to 2023. With its cast aluminum construction and standard piston compression, it is suitable for replacement with equivalent original equipment manufacturer quality.

Function and execution

The piston has a patented surface treatment to reduce friction in the cylinder. The MoS2 skirt coating supports the defined design of the piston running areas. A curved piston, a lamella cutout and an intake hole are specified for the vehicle-specific design.

Technical data

• Brand: PROX
• Piston Type: Cast
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 66.36 mm
• Letter oversize: B
• Oversize: +0.01
• Stroke: 2T
• Specificity: Domed piston / fin cutout / suction hole / MoS2 skirt coating

Vehicle assignment

Suitable for Yamaha YZ 250 (CG 23), built between 2006 and 2023. The assignment refers to this model and this specified year of manufacture.

Selection note

When making the selection, the diameter of 66.36 mm, the code letter B and the oversize +0.01 must be taken into account in particular. The piston is designed for a 2T engine.