PISTON 94-00 POLARIS 300 74.50, NAMURA NA-50003 KIT ATV

Namura Piston Assembly - 74.50mm Bore

Enhance the performance and longevity of your engine with the Namura Piston Assembly. Engineered in the USA and manufactured in Taiwan, these high-performance pistons are built with a high-silicon content, hypereutectic cast aluminum material. This advanced material provides several key benefits including less heat expansion, tighter clearances, increased hardness, and reduced scuffing for a longer operational life.

The pistons feature precisely machined, smooth piston crowns designed to reduce carbon buildup, leading to increased horsepower and improved fuel economy. For even greater durability, hard anodized crowns are available, offering 75% more strength than non-anodized versions. This minimizes expansion and significantly reduces the risk of cold seizures, especially when combined with the Teflon/Molybdenum coated skirts.

Experience superior performance with the MOS2 (Teflon/Molybdenum) coated skirts. This advanced coating drastically reduces friction and heat, contributing to added power and extended engine longevity. The Namura piston rings are designed to match OEM specifications, ensuring a perfect fit and reliable operation. For applications where cylinder wear has occurred, fractional oversize pistons are available to renew original clearance and extend the life of your valuable cylinder.

Key Features:

• High-silicon content Hypereutectic cast aluminum material
• Reduced heat expansion and tighter clearances
• Increased hardness and longer life
• Reduced scuffing
• Machined, smooth piston crowns for reduced carbon buildup
• Increased horsepower and fuel economy
• Hard anodized crowns (75% stronger)
• Minimal expansion and reduced risk of cold seizures
• MOS2 (Teflon/Molybdenum) coated skirts
• Reduced friction and heat
• Namura rings match OEM design
• Available in fractional oversize for cylinder renewal
• Bore Size: 74.50mm