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CP Pistons Yamaha Raptor 350 ATV Piston Kits Standard Bore & Big Bore

Yamaha ATV CP Pistons Logo

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 Yamaha Raptor 350 four stroke ATV's. Standard bore size and big bore Raptor 350 CP Pistons Yamaha ATV kits are all available here. 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 including:

Team Suzuki Ricky Carmichael Ivan Tedesco Ryan Dungey
MDK Speed David Vuillemin Nick Wey
MDK/Lucas Oil/Yamaha White Bros. Yamaha Rick Ware Racing Team Solitaire

Yamaha yfm350 warrior atv cp pistons

Standard Features included with each Yamaha Raptor 350 CP Piston Kit:
Double forced pin oilers Fully CNC Machined
Accumulator groove Pick lock removal grooves
Anti detonation grooves X-style forging
Light weight pins Balanced to + or - 1 gram

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.

Click on the part number in the table below for pricing or to order the piston and, or head gasket of your choice.

2005 - 2006 Yamaha Raptor 350 Piston Kit and Big Bore Raptor 350 Pistons
Stock Bore is 83mm (3.268")
Stock Stroke is 64.5mm (2.539")
Part # Bore Size Cubic
Centimeters
Compression Top End Gasket Kit # Installation
Notes
cp m1012 83mm std. 349cc 10.5-1 cp c7096 deglaze cylinder
cp m1013 83.5mm +0.5mm 353cc 10.5-1 cp c7096 bore and replate cylinder
cp m1014 84mm +1mm 357cc 10.5-1 cp c7096 bore and replate cylinder