Wiseco .040 Piston Crankshaft Gasket Set 101mm for Yamaha Raptor 660 2001-2005

Wiseco .040 Piston, Crankshaft and Gasket Set for Yamaha Raptor 660

This Wiseco .040 overbore piston, crankshaft and gasket set fits the 2001-2005 Yamaha Raptor 660 with a 101.00mm bore, giving riders a matched rebuild package for the piston, crank and sealing gaskets.

Overview

This Wiseco piston, crankshaft and gasket set is a matched rebuild kit for the 2001-2005 Yamaha Raptor 660, using a .040 overbore piston at 101.00mm. It covers the piston, crankshaft and gaskets in one package, letting riders refresh a worn engine without hunting down separate components. The 101.00mm piston and crankshaft set suits anyone rebuilding a tired Raptor 660 top and bottom end.

Built For Performance

• .040 overbore piston with a 101.00mm bore size for a precise cylinder fit
• Matched crankshaft included to replace a worn original unit
• Complete gasket set supplied to reseal the engine during assembly
• Forged Wiseco piston built to handle high-rpm quad riding
• Single-kit convenience for piston, crank and gasket replacement

Fits These Machines

• for Yamaha Raptor 660, 2001
• for Yamaha Raptor 660, 2002
• for Yamaha Raptor 660, 2003
• for Yamaha Raptor 660, 2004
• for Yamaha Raptor 660, 2005

On-The-Job Use

• Top and bottom end rebuilds on 2001-2005 Yamaha Raptor 660 quads
• Bringing compression back on a high-hour or smoking engine
• Overbore rebuilds where the cylinder has been bored to 101.00mm
• Shop or home rebuilds needing matched piston and crankshaft parts

Specs At A Glance

Good To Know

Q: Does this kit need cylinder machining? A: Yes, a .040 overbore piston at 101.00mm requires the cylinder to be bored and honed to match.

Q: Will the crankshaft work as a stock replacement? A: The crankshaft is meant to replace the original unit on 2001-2005 Yamaha Raptor 660 engines during a rebuild.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.