Wiseco Forged Piston Kit 74.50 mm 10.5:1 CR for Yamaha TTR250 1999–2006 4689M07450

Wiseco 4689M07450 is a piston kit for a 74.50 mm bore.

Wiseco catalogue applications

Specifications

• Manufacturer part number: 4689M07450
• Product Series: 4 Stroke Forged Series
• Bore Diameter: 74.50 MM
• Piston Diameter: 74.45 MM
• Piston Oversize: 1.50 MM
• Piston Material: 2618
• Skirt Coating: No
• Compression Ratio Actual: 10.5:1

Included components

Ring Set #2933XC, Piston pin #S524, Circlip #CW18.

Cylinder preparation

Wiseco specifies: Bore & Hone.

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

Manufacturer photograph for this reference. Packaging presentation may change.