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 cast aluminum design combines a precise technical design with the standard piston compression relevant for engine use.

Function and execution

The patented surface treatment supports reduced friction in the cylinder. The coated piston skirts have a MoS2 coating. The curved piston is designed with a lamella cutout and suction hole.

Technical data

• Brand: PROX
• Piston Type: Cast
• Material: aluminum
• Diameter Ø: 66.35 mm
• Piston compression: standard
• Letter oversize: A
• Oversize: STD
• 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 guide

The piston diameter of 66.35 mm, the standard compression and the A and STD markings should be compared with the existing engine concept and the required replacement dimension before ordering. The version can be selected specifically for the Yamaha YZ 250 (CG 13) from 2003.