Yamaha YZ 250 (CG 05) [1999] - cast pistons

PROX cast piston for Yamaha YZ 250 (CG 05), built in 1999

The PROX cast piston is designed as a replacement for the Yamaha YZ 250 (CG 05) built in 1999. The cast aluminum version has a diameter of 66.36 mm and standard piston compression. The component thus offers a defined selection for repairing the right 2T engine.

Function and execution

The patented surface treatment is designed to reduce friction in the cylinder. The design specification includes a curved piston, a fin cutout, a suction hole and a MoS2 skirt coating. These features describe the design of the piston and make it easier to compare it with the existing engine structure.

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 the Yamaha YZ 250 (CG 05), built in 1999. The selection should be based on the specified diameter of 66.36 mm as well as version B and oversize +0.01.