YAMAHA YZ 250 [2024-2027] - cast pistons

PROX cast piston for YAMAHA YZ 250 2024-2027

The PROX cast piston is designed as a replacement piston for the YAMAHA YZ 250 built between 2024 and 2027. Its cast aluminum design combines the specified engine dimensions with standard piston compression and is therefore suitable for replacement with equivalent original equipment manufacturer quality.

Function and execution

A patented surface treatment helps reduce friction in the cylinder. The piston skirt has a MoS2 coating. The piston is designed with a curved piston crown, a lamella cutout and a 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

Vehicle assignment

Suitable for the YAMAHA YZ 250, built between 2024 and 2027. The assignment refers to this vehicle and this complete year of manufacture.

Factual advice on selection

The diameter of 66.35 mm, the marking A and the STD and 2T versions are particularly important for the selection. Before installation, the engine dimensions and the existing piston design should be compared with the technical specifications of the vehicle.