Yamaha WR 250 Z [1992-1998] - cast pistons

PROX cast piston for Yamaha WR 250 Z from 1992 to 1998

The PROX cast piston is designed as a replacement piston for the Yamaha WR 250 Z in the entire model year range 1992-1998. Its technical features support a targeted selection that matches the intended engine variant.

Function and execution

The piston is made of aluminum and is designed as a cast piston. The curved piston shape and the reed cutout are part of the specific design. A MoS2 coating complements the construction. Piston compression is specified as standard.

Technical data

• Material: aluminum
• Piston Type: Cast
• Piston compression: standard
• Diameter Ø: 67.95 mm
• Letter oversize: B
• Oversize: +0.01
• Stroke: 2T
• Specificity: Domed piston / Reed cutout / MoS2 coating

Vehicle assignment

The cast piston is assigned to the Yamaha WR 250 Z, built between 1992 and 1998. The diameter of 67.95 mm, the oversize letter B and the version with +0.01 oversize are particularly relevant for the selection.

Factual note

Please compare the piston features mentioned with the intended application on the Yamaha WR 250 Z before ordering. The design is described for a 2T engine and combines the cast aluminum piston with a curved piston shape, reed cutout and MoS2 coating.