Wiseco Pro-Lite Piston Kit 68.50 mm for Yamaha YZ250 1988–1991 605M06850

Wiseco 605M06850 is a piston kit for a 68.50 mm bore.

Wiseco catalogue applications

Specifications

• Manufacturer part number: 605M06850
• Product Series: 2 Stroke Pro-Lite Series
• Bore Diameter: 68.50 MM
• Piston Diameter: 68.45 MM
• Piston Oversize: 0.50 MM
• Piston Material: 4032
• Skirt Coating: No

Included components

Ring Set #2697CD, Piston pin #S508, Circlip #CW18.

Cylinder preparation

Wiseco specifies: Bore/Replate/Sleeve.

Select by the required finished cylinder bore. Bore diameter and piston diameter are different measurements.

Application notes

• Yamaha YZ250 1988–1991, Yamaha WR250 1991: At bores of 69 mm or above, modify the power valve before fitting.
• Yamaha YZ250 1988–1991, Yamaha WR250 1991: 1991 model is Nikasil bore.