Yamaha YZ 250 (CG 12) [2002] - cast pistons

PROX cast piston for the Yamaha YZ 250

The PROX cast piston is designed as a replacement piston with equivalent original equipment manufacturer quality and combines an aluminum construction with a precisely defined design for the 2-stroke engine. The patented surface treatment helps reduce friction in the cylinder.

Function and execution

The piston is cast and has standard piston compression. Its curved piston shape is designed with a slat cutout and a suction hole. A MoS2 skirt coating complements the design of the piston skirt.

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

Vehicle assignment

The PROX cast piston is designed for the Yamaha YZ 250 (CG 12), built in 2002. The vehicle assignment refers to this model and this complete year range.

Selection guide

Before ordering, the piston diameter, design and the A and STD markings should be compared with the existing engine. The combination of Ø 66.35 mm, standard compression and 2T version supports a targeted selection for the intended use in the Yamaha YZ 250 (CG 12) from 2002.