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

Honda Dirt Bike CP Pistons Logo

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

Honda CRF250R cp pistons

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