Upgrade the performance and reliability of your Polaris engine with this premium Namura Piston Kit designed specifically for Polaris Sportsman and Ranger models. Engineered for precision and durability, this piston kit is an ideal choice for both stock and modified motors. Each piston is manufactured to exact OEM specifications, ensuring a perfect fit and optimal engine performance. The kit features a standard 79.95 mm piston size, machined smooth crown for improved combustion efficiency, and a high silicon alloy construction that enhances strength while reducing expansion under high operating temperatures.
The Teflon and molybdenum-coated piston skirts provide superior lubrication and minimize friction, helping your engine run cooler and last longer. This coating also reduces wear during startup and prevents scuffing under extreme conditions. Whether you use your Polaris for work, recreation, or competition, this piston kit delivers dependable power and smoother operation. It is designed to replace Polaris part number 2202107 and includes everything you need for a full installation: piston, rings, wrist pin, and circlips.
Built for riders who demand consistent performance, the Namura Piston Kit is an excellent upgrade over standard OEM pistons. The advanced alloy composition and precision machining improve heat transfer and maintain compression integrity, resulting in better throttle response and extended engine life. Each component undergoes strict quality control to ensure maximum reliability and performance consistency across every ride.
Available in multiple sizes — 92mm (NA50004), 92.5mm (NA50004-2), 93mm (NA50004-4), and 93.5mm (NA50004-6) — this kit allows for precise fitment to your specific engine requirements. Weighing only 32 oz and with compact dimensions of 6 × 6 × 4 inches, this piston kit is easy to handle, install, and integrate into your existing setup. Choose Namura for proven durability, enhanced performance, and a smoother, more efficient engine operation in your Polaris Ranger or Sportsman.
