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

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 |

| 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 PistonStock 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 |
|