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CP Pistons Yamaha YZ 450F Dirt Bike Piston Kits Standard Bore, Big Bore and High Compression

Yamaha 450 Dirt Bike 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 YZ450F four stroke dirt bikes. Standard bore size and big bore 468cc YZ450F CP Pistons Yamaha dirt bike 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 dirt bike 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 yz450f cp pistons

Standard Features included with each Yamaha YZ450F 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.

2003 - 2006 Yamaha YZ450F CP Piston Kit

Stock Bore size is 95mm (3.740") Stock Stroke is 63.4mm (2.496")

Part # Bore Size Cubic
Centimeters
Compression Top End Gasket Kit # Installation
Notes
cp m1010 95mm std. 450 cc 13.0-1 cp c7947 deglaze cylinder
cp m1011 95mm std. 450 cc 13.5-1 cp c7947 deglaze cylinder
cp m1030 97mm +2mm 468cc 13.0-1 cp c3064 bore and replate cylinder
cp m1031 97mm +2mm 468cc 13.5-1 cp c3064 bore and replate cylinder