Performance Parts and Racing Parts Campbell Enterprises

CP Pistons Yamaha YZ250F Piston Kits Standard Bore, YZ250F Big Bore and High Compression YZ 250F Pistons

Yamaha YZ250F Dirt Bike CP Pistons Logo

CP YZ250F 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 YZ250F four stroke dirt bikes. Standard bore size and big bore YZ250F 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 YZ250F racing pistons are used by top professional riders and teams!

Yamaha yz250f piston kit

Standard Features included with each CP Yamaha YZ250F Piston Kit:

Standard series pistons have a "M" in the part number

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

Additional Features for "Project X" Series YZ 250 F Pistons

Project X Series pistons are the result of the latest in ultra high performance technology improvements from CP. Pistons listed below with "mx" preceding the part number are part of the new "Project X" piston line up.

Project X series pistons have a "MX" in the part number

Leading edge racing piston technology Fully boxed style forging for ultimate strength, durability and power
Coated Piston Skirts Internal windows allow additional oil to flow to pin
New piston skirt designs maximize power and reduce piston rocking Wrist pins treated with proprietary coating to eliminate pin galling

 

Get HOLESHOT WINNING POWER with CP YZ 250F Piston Kits!

CP Yamaha YZ250F Piston Kit and YZ250F Big Bore Piston Kits

  • Piston/Gasket Kit Set includes: 1 Piston, 1 Piston Pin, Piston Rings, Pin Lock rings, 1 Top End Gasket Kit
  • Piston Kit includes: 1 Piston, 1Piston Pin, 1 set Piston Rings, Pin Lock rings for 1 cylinder
  • Gasket Kit Includes: Cometic high performance top end gaskets required to replace piston in 1 cylinder

2001 - 2004 CP Yamaha YZ250F Piston Kit YZ250F Big Bore Piston Kits

Stock Bore size is 77mm (3.031") Stock Stroke is 53.6mm (2.110")

Bore Size Disp. Comp Installation
Notes

Yamaha YZ 250F piston and top end gasket kit

Piston/Gasket Kit

Yamaha YZ250 F piston kit

Piston Kit

Yamaha yz250f top end gasket kit

Gasket Kit
77mm std. 250 cc 13.5-1 deglaze cylinder cpk1029c cp m1029c cp c3057

2005 - 2013 CP Pistons Yamaha YZ 250F Piston Kit YZF250 Big Bore Piston Kits

Stock Bore size is 77mm (3.031") Stock Stroke is 53.6mm (2.110")

77mm std. 250 cc 12.8-1 deglaze cylinder cpkx1032c cp mx1032c cp c3057
77mm std. 250 cc 13.5-1 deglaze cylinder cpk1034c cp m1034c cp c3057
77mm std. 250 cc 13.5-1 deglaze cylinder cpkx1034c cp mx1034c cp c3057
77mm std. 250 cc 14.0-1 deglaze cylinder cpk1035c cp m1035c cp c3057
77mm std. 250 cc 14.0-1 deglaze cylinder cpkx1035c cp mx1035c cp c3057
79mm +2mm big bore 263cc 12.5-1 bore and replate cylinder cpk1036c cp m1036c cp c3057
79mm +2mm big bore 263cc 12.5-1 bore and replate cylinder cpkx1036c cp mx1036c cp c3057
80mm +3mm big bore 269cc 13.5-1 requires sleeve or cylinder cpkx1050c cp mx1050c cp c3059

2005 - 2013 YZ250F FULL RACE Piston

Stock Bore size is 77mm (3.031") Stock Stroke is 53.6mm (2.110")

Full race YZ250F pistons are custom forged pistons but available off the shelf. These are single ring, high compression, lightweight pistons which feature a highly efficient dome design that maximizes squish without compromising performance. Lateral gas ports are added to maximize ring seal while a skirt coating is included to improve power and provide additional lubrication, minimizing friction in extreme competition conditions.

The full race pistons come complete with high performance rings, lightweight pins and locks.

77mm std. 250 cc 14.25-1 deglaze cylinder cpkx1135c cp mx1135c cp c3057

 

Project X YZ250F Platinum Racing Piston, Rod, Gasket Kits

Developed and proven in the 2009 AMA outdoor motocross season, these championship winning kits have once again changed the game. Project X Platinum Kits feature the same top of the line products that top professionals rely on. The redesigned piston and rod combo gives your engine a lightweight assembly that is engineered to give you more power and durability. Revolutionary to the industry, these types of assemblies were once only available as custom pieces at custom prices. Now, off the shelf and available, these kits are just the thing you need to transform your bike into a racing machine without breaking the bank.

  • Platinum Kit includes: Full Race Piston, Piston Pin, Piston Rings, Pin Lock rings, Carrillo Rod and Gasket Kit
  • Piston Kit includes: Full Race Piston, Piston Pin, Piston Rings, Pin Lock rings for 1 cylinder
  • Gasket Kit Includes: Cometic high performance top end gaskets required to replace piston and rod in 1 cylinder

 

2005 - 2013 Yamaha YZ250F Project X Platinum Professional Racing Kit

YZ250F Stock Bore size is 77mm (3.031") Stock Stroke is 53.6mm (2.110")

Bore Size Disp. Comp Installation
Notes

2010 kawasaki kx250f piston, 2010 kx250f rod and top end gasket kit

Platinum Kit

Honda crf250r piston kit

Piston Kit

Honda CRF 250 R top end gasket kit

Gasket Kit
77mm std. 250 cc 13.5-1 deglaze cylinder, uses 1mm Smaller than stock pin and 2mm Longer than stock Rod; Lightweight cpkx1p34c cp mx1p34c cp c3057est
77mm std. 250 cc 14-1 deglaze cylinder, uses 1mm Smaller than stock pin and 2mm Longer than stock Rod; Lightweight cpkx1p35c cp mx1p35c cp c3057est

 

Carrillo YZ250F Connecting Rod Yamaha YZ250F Rod

Honda CRF 250 Carrillo Connecting Rod Carrillo CRF250R connecting rod image

Premium Carrillo YZ250F connecting rod provides superior strength for extreme high performance and racing YZ 250F engines. Designed with legendary Carrillo quality to give you an extremely strong and dependable replacement connecting rod at a reasonable price. Can be used as a stock replacement connecting rod as well as for high performance and racing engines, including big bore engines.

2001 - 2013 YZ250F Connecting Rod

YA-25CA<-03681N

Replacement Special Carrillo YZ250F Rod for use with CP Pistons Platinum Kit Piston

YZ250F Platinum rod, length and pin size to match the Platinum Pistons listed above. Works ONLY with the Project X Platinum pistons as this rod has a 1mm smaller than stock pin bore and is 2mm longer than a stock yz250f connecting rod

2005 - 2013 YZ250F Project X Platinum Connecting Rod

YA-2515CA<-03761N

 

The piston and gaskets listed on this page fit the following model year YZ250F Dirt Bikes:

2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 Yamaha YZ 250F Piston Kits and Gaskets

Back to Top YZ250F Pistons Page

 

 

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