Yamaha YZ 250 (CG 13) [2003] - cast pistons

PROX cast piston for Yamaha YZ 250 (CG 13), built in 2003

The PROX cast piston is designed as a replacement piston for the Yamaha YZ 250 (CG 13) built in 2003. Its aluminum design and standard piston compression are based on equivalent original equipment manufacturer quality.

Function and execution

The piston has a diameter of 66.37 mm and the oversize +0.02 with the letter C. The curved piston shape is designed with a lamella cutout and a suction hole. A MoS2 apron coating complements the construction. The patented surface treatment serves to reduce friction in the cylinder.

Technical data

• Brand: PROX
• Piston Type: Cast
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 66.37 mm
• Letter oversize: C
• Oversize: +0.02
• Stroke: 2T
• Specificity: Domed piston / fin cutout / suction hole / MoS2 skirt coating

Vehicle assignment

Suitable for the Yamaha YZ 250 (CG 13), built in 2003. The assignment refers to this model and this complete year range.

Selection note

When making the selection, the piston diameter of 66.37 mm, the oversize letter C and the oversize specification +0.02 must be taken into account in particular. This means that the version can be selected specifically based on the technical engine data.