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

PROX cast piston for Yamaha WR 250 Z 1992-1998

The PROX cast piston is designed as a suitable engine component for the Yamaha WR 250 Z from the entire model range 1992 to 1998. Its technical features support a targeted selection according to piston type, diameter, oversize and design.

Design and technical features

• Material: aluminum
• Piston Type: Cast
• Piston compression: standard
• Diameter Ø: 67.97 mm
• Letter oversize: D
• Oversize: +0.03
• Stroke: 2T
• Specificity: Domed piston / Reed cutout / MoS2 coating

The piston has a cast aluminum design with standard compression. The diameter of 67.97 mm and the oversize marking with the letter D enable comparison with the relevant engine data. The information “+0.03” describes the designated oversize version.

Vehicle assignment

This cast piston is for the Yamaha WR 250 Z, built between 1992 and 1998. The vehicle assignment refers to this entire year of construction.

Selection guide

Before ordering, the information on diameter, oversize, piston compression and 2T version should be compared with the existing engine. The curved piston, the reed cutout and the MoS2 coating characterize the specific design of this PROX cast piston.