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CP Pistons Honda CRF450R Dirt Bike Piston Kits Standard Bore, Big Bore and High Compression Pistons

Honda 450 Dirt Bike CP Pistons Logo

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

Honda CRF450R piston kits, high compression, big bore and stock standard bore high performance and racing piston kits are available from CP Pistons for all model years of the CRF450R four stroke dirt bikes. We offer the complete CP Pistons Honda CRF450R product line. These superior 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.

The following sizes of CP Pistons Honda CRF450R big bore kits are available, 458cc, 468cc, 477cc and 486cc.

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

Honda CRF450R high compression cp pistons big bore kits and piston kits

Standard Features included with each Honda CRF450R 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.

2002 - 2006 Honda CRF450R CP Piston Kit and Big Bore CRF450R Piston
High Compression CRF450R Piston

Stock Bore size is 96mm (3.780") Stock Stroke is 62mm (2.441")

Part # Bore Size Cubic
Centimeters
Compression Top End Gasket Kit # Installation
Notes
cp m2009 96mm std. 450cc 12.5-1 cp c7845 deglaze cylinder
cp m2029 96mm std. 450cc 13.0-1 cp c7845 deglaze cylinder
cp m2010 96mm std. 450cc 13.5-1 cp c7845 deglaze cylinder
cp m2011 97mm +1mm 458cc 12.5-1 cp c7849 bore and replate cylinder
cp m2012 97mm +1mm 458cc 13.5-1 cp c7849 bore and replate cylinder
cp m2013 98mm +2mm 468cc 12.5-1 cp c7849 bore and replate cylinder
cp m2031 98mm +2mm 468cc 13.0-1 cp c7849 bore and replate cylinder
cp m2014 98mm +2mm 468cc 13.5-1 cp c7849 bore and replate cylinder
cp m2015 99mm +3mm 477cc 12.5-1 cp c7849 requires sleeve or cylinder
cp m2016 99mm +3mm 477cc 13.5-1 cp c7849 requires sleeve or cylinder
cp m2032 100mm +4mm 486cc 12.0-1   requires sleeve or cylinder