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. Its design and technical features are based on a replacement of equivalent original equipment quality.

Function and execution

The aluminum piston features a cast construction and standard piston compression. The patented surface treatment helps reduce friction in the cylinder. To match the intended engine, the piston crown and skirt are designed with a curved piston, lamella cutout, intake hole and a MoS2 skirt coating.

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 Yamaha YZ 250 (CG 05), built in 1999. The assignment applies to this model and this entire year range.

Selection note

Before ordering, check the information on the vehicle model, year of manufacture, piston diameter and version. The diameter of Ø 66.35 mm as well as the markings A and STD are decisive for the selection of this piston.