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CP Pistons Forged Platinum Piston Kit for 2005-2012 Yamaha YZ250F 77.0mm Bore / 14.0:1 CR, 1mm Smaller Pin/ 2.0mm Longer Rod

CP Pistons Forged Platinum Piston Kit for 2005-2012 Yamaha YZ250F 77.0mm Bore / 14.0:1 CR, 1mm Smaller Pin/ 2.0mm Longer Rod
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CP Pistons Forged Platinum Piston Kit for 2005-2012 Yamaha YZ250F 77.0mm Bore / 14.0:1 CR, 1mm Smaller Pin/ 2.0mm Longer Rod
List Price: $357.50
Our Price: $318.00
You save $39.50!


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Product Code: MX1P35C

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CP Pistons Forged Platinum Piston Kit for 2005-2012 Yamaha YZ250F 77.0mm Bore / 14.0:1 CR, 1mm Smaller Pin/ 2.0mm Longer Rod
CP Pistons Forged 2618 Pistons for the 2005-2012 Yamaha YZ250F are designed for maximum performance and horsepower. Each piston is designed to withstand the intense heat and pressures of high compression normally aspirated and high boost turbocharged or supercharged motors. Build your YZ250F with CP Pistons and experience the closest tolerances in the industry with consistent and reliable performance that leads the industry. This Platinum Piston kit has many race ready piston design features and includes upgraded wrist pin(s), wire locks, and piston rings.
Product specifications
Part# Make Engine Bore Size Compression Ratio Rod Length Stroke
MX1P35C Yamaha YZ250F 77.0mm 14.0:1 +2.0mm STD
Features
  • Fully CNC machined - Advanced machining techniques enable CP to virtually create any shape on a piston and allows CP to hold the closest tolerances in the industry.
  • Balanced to +/- 1 gram - Properly balanced pistons are essential to high horsepower and high rpm applications.
  • Accommodates high lift camshafts - CP pistons are already designed for high lift camshafts.
  • Valve reliefs fit oversized valves - CP Pistons are designed to be compatible with other internal upgrades.
  • Double forced pin oilers - Used with dual fed reservoir add twice the amount of oil from the cylinder wall to the wrist pin.
  • Accumulator Grooves - V-shaped groove machined into the second ring land to collect excess gases during combustion and alleviate ring flutter. This allows CP Pistons to provide maximum ring seal and increasing vacuum.
  • Anti-Detonation Grooves - Anti Detonation Grooves (Contact Reduction Grooves) are grooves that protect the top ring by disrupting detonation waves. Also known as contact reduction grooves, these grooves limit the piston/cylinder contact during high temperature and RPM.
  • Radiused Domes - Radiused Domes are used to maximize quench while eliminating possible hot spots that promote detonation.
  • Cam and Barrel - Extensive research and development has been done to find the optimum skirt shape for each piston. Having the correct cam and barrel results in tighter clearances, improved ring seal, more power, and improved engine durability.
  • X-Forgings - X-Forgings are designed to minimize friction and reduce weight without compromising strength. With the use of bracing and ribs, the forging is configured by adjusting the weight balance between high and low stress areas. This design enables the use of a shorter pin for added strength and weight savings.
  • Forged from high strength 2618 Alloy - Using the highest quality materials and thoroughly researched designs ensures maximum strength and durability.

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