CP Pistons Honda CRF250R Dirt Bike Piston Kits Standard Bore, Big Bore
and High Compression

CP Pistons, for those that demand the
ultimate in engine performance!
High performance and racing Honda CRF piston kits and top end gasket kits
are available from CP Pistons for all model years of the CRF250R four stroke dirt bikes.
Standard bore size and big bore CRF250R CP Pistons Honda 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 |

| Standard Features included with each Honda
CRF250R 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.
| 2004 - 2006 Honda CRF 250R CP Piston Kit and
CRF250R Big Bore Kit Stock Bore size is 78mm (3.070") Stock Stroke is
52.2mm (2.055") |
| Part # |
Bore Size |
Cubic
Centimeters |
Compression |
Top End Gasket Kit # |
Installation
Notes |
| cp m2042 |
78mm std. |
250 cc |
13.0-1 |
cp c7185 |
deglaze cylinder |
| cp m2000A |
78mm std. |
250 cc |
13.5-1 |
cp c7185 |
deglaze cylinder |
| cp m2027 |
82mm +4mm |
276cc |
12.5-1 |
|
requires sleeve or cylinder |
|