We have 2 ready to ship.
Features:
- All piston skirts are coated with a hi-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
- Cast Replica piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston
- Forged Replica pistons are forged from 2618 aluminum for superior strength and durability
- Forged High Compression pistons improve power and torque across entire rpm range
- Forged Big Bore pistons increase engine’s displacement, torque, and peak horsepower
- Forged Replica pistons are forged OE replacements
- All pistons are heat treated with a T-5 hardening and tempering cycle
- Replica pistons and all rings are OEM replacements
- Kits include piston, rings, wrist pin and circlips
- Two stroke replacement rings are sold individually (Example if your piston has two rings you will want to order two rings)
- Four-stroke piston rings sold as a set
Fitment:
2001 Yamaha YFM660R Raptor
2002 Yamaha YFM660FG Grizzly 4WD [IRS]
2002 Yamaha YFM660R Raptor
2003 Yamaha YFM660FG Grizzly 4WD [IRS]
2003 Yamaha YFM660R Raptor
2004 Yamaha YFM660FG Grizzly 4WD [IRS]
2004 Yamaha YFM660R Raptor
2004 Yamaha YXR660F Rhino 660
2005 Yamaha YFM660FG Grizzly 4WD [IRS]
2005 Yamaha YFM660R Raptor
2005 Yamaha YXR660F Rhino 660
2006 Yamaha YFM660FG Grizzly 4WD [IRS]
2006 Yamaha YXR660F Rhino 660
2007 Yamaha YFM660FG Grizzly 4WD [IRS]
2007 Yamaha YXR660F Rhino 660
2008 Yamaha YFM660FG Grizzly 4WD [IRS]