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Raptor 660 Piston Kits CP Pistons Yamaha YFM 660 ATV Piston Kits Standard Bore, Big Bore and High Compression 660 YFM Rhino Raptor Pistons

CP Pistons, for those that demand the ultimate in engine performance!

High performance and racing Yamaha piston kits are available from CP Pistons for all model years of the YFM Raptor 660 / Rhino 660 four stroke ATV's. Standard bore size and big bore Rhino 660 / 660 Raptor CP Pistons Yamaha ATV kits are all available here. We also have 660 Raptor high compression piston kits. These forged pistons will work with oversize valves as well as high lift camshafts as they include oversize valve reliefs. They incorporate a "X" style forging for greater strength, durability and reduced weight. Along with the full radius dome designs, high performance piston rings and lightweight piston pins, these pistons offer the highest quality and are engineered for maximum power output.

CP Pistons ATV racing pistons are used by top professional riders and teams.

Each of the below kits include:
Piston
Piston Pin
Piston Rings
Pin Locks

Cometic top end gasket sets are available separately, but are not included with the piston kit. The matching top end gasket kit for each application is listed in the table below, along with the individual piston kit info.

If you need bore and hone work done, a sleeve installed, or a new cylinder, we can help you with that also. Please contact us for assistance.

2002 - 2005 YFM 660 Raptor Rhino 660 Stock Bore is 100mm (3.937") Stock Stroke is 84mm (3.307")
Part #	Bore Size	Cubic Centimeters	Compression	Top End Gasket Kit #	Installation Notes
cp m1015a	100mm std.	660cc	11.0-1	cp c7044est	deglaze cylinder
cp m1016a	102mm +2mm	686cc	11.0-1	cp c7798	bore and hone
cp m1017a	102mm +2mm	686cc	12.0-1	cp c7798	bore and hone
cp m1018a	102mm +2mm	686cc	12.5-1	cp c7798	bore and hone
cp m1019a	105mm +5mm	727cc	12.0-1	cp c7909	requires sleeve or cylinder

These piston kits fit the following model year YFM 660 Raptor and Rhino 660 engines: 2002 2003 2004 2005 Raptor 660

 

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Yamaha Raptor 660 ATV Parts and Service Manuals, Books and DVD