1. Pistons, Rings & Piston Kits Products
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  3. NAMURA NA-50012-4

NAMURA NA-50012-4 Piston Kit 2009-22 87.93MM

fits model: 850, Sportsman. make: Polaris.

Na-50012-4 Namura Piston Kit / 2009-22 Polaris Sportsman 850 All 87.93mm

( Brand: Namura ), ( Manufacturer Part Number: NA-50012-4 ), ( Part Type: Piston )

Review NAMURA Piston Kit 2009 Polaris All 87.93mm fits SPORTSMAN 850

Introducing the Namura NA-50012-4 Piston Kit, specifically designed for the Polaris Sportsman 850 model produced between 2009 and 2012. This piston kit is an excellent upgrade for those seeking superior performance and reliability from their ATV.

Each piston in this kit is meticulously crafted from high-quality forged aluminum alloy. The forging process ensures a strong and durable piston that can withstand the rigors of off-road riding. The piston skirt features a optimized profile for improved ring seal, reducing the possibility of oil leaks and ensuring efficient engine performance.

The piston crown is designed with a dished shape to provide optimal combustion efficiency. The crown also features a reinforced ring land to ensure the piston rings remain in place, reducing the risk of ring groove wear.

The piston pin is made from high-tensile steel, ensuring a strong and reliable connection between the piston and the connecting rod. The pin is also coated with a low-friction material to reduce wear and improve engine longevity.

The piston kit also includes new piston rings, which are made from high-quality, heat-resistant materials to ensure a tight seal and efficient engine performance. The rings are also precision-machined to ensure a perfect fit.

Installing the Namura NA-50012-4 Piston Kit is a straightforward process, and the kit includes all necessary hardware for a hassle-free installation. The piston kit is also backed by Namura's commitment to quality and customer satisfaction, making it an excellent choice for those seeking top-performing components for their Polaris Sportsman 850.

In summary, the Namura NA-50012-4 Piston Kit is an excellent upgrade for those seeking superior performance and reliability from their Polaris Sportsman 850. Each piston is meticulously crafted from high-quality materials, and the kit includes all necessary hardware for a hassle-free installation. With its strong and durable design, the Namura piston kit is an investment in the longevity and performance of your ATV.

Piston Kit Upgrade for Polaris Sportsman 850: A Closer Look at the Namura NA-50012-4

Introduction:

The Namura NA-50012-4 piston kit is a popular aftermarket upgrade for the Polaris Sportsman 850. This kit promises enhanced performance, durability, and reliability. In this analysis, we will evaluate the pros and cons of investing in this piston kit for your 2009-2012 Polaris Sportsman 850.

Pros:

1. Improved Performance: The Namura piston kit is designed to increase engine power and torque, providing a more responsive and thrilling riding experience.

2. Enhanced Durability: The piston kit is made from high-quality materials that can withstand the rigors of off-road riding, offering extended engine life.

3. Customizable: The kit includes various options to cater to different riding styles and power requirements, allowing you to choose the best piston design for your specific needs.

4. Easy Installation: Many users report that the installation process is straightforward and can be completed within a few hours, making it an appealing DIY project.

Cons:

1. Cost: The Namura piston kit comes at a higher price point compared to OEM options. This cost may be a deterrent for some users, especially those on a budget.

2. Potential Power Increase: While an increase in power can be desirable, it may also require a corresponding upgrade to other engine components to maintain optimal performance and ensure safety.

3. Potential Noise Increase: Some users report an increase in engine noise after installing the piston kit. This may be a concern for those who prefer a quieter riding experience.

Conclusion:

The Namura NA-50012-4 piston kit offers several advantages, including improved performance, enhanced durability, and customizable options. However, it comes at a higher cost, and there is a potential increase in power, noise, and required engine upgrades.

Recommendation:

If you are an off-road enthusiast looking for increased performance and durability for your Polaris Sportsman 850, the Namura piston kit is a worthwhile investment. However, be prepared for the additional cost and potential upgrades required to maintain optimal performance and safety. If you are on a tight budget or prefer a quieter riding experience, this kit may not be the best choice for you.

Details:

Some tests have shown this feature can increase horsepower and fuel economy by up to 6%. MOS2 Teflon/Molybdenum Coated Skirts - A rolled on application process provides a bond that is 10 times stronger than other spray coatings. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures. Free Shipping.

Machined Smooth Heads - Reflects combustion heat and reduces carbon buildup, protecting the top of piston. Anodized Domes - Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized. Namura Technologies Piston Kit: Part Number: NA-50012-4.

part #: na500124 prices

  • $85.99-$149.02

specifications pistondon:

  • for models: 850, Sportsman
  • for makes: Polaris
  • brand: Namura
  • mpn: Na-50012-4
  • part type: Piston

offer pistondon:

  • options: Ship-to-home
  • started: March 28, 2025
  • quantity: 4
  • sold: 0
  • availability: In Stock

general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
  • condition: New

shipping pistondon:

  • transit: 4-8 Days
  • cost: $0.00
  • service: Standard
  • class: Standard
  • type: Fixed

payments pistondon:

  • credit card: Discover
  • other
  • wallet: Apple-pay

returns pistondon:

  • paid by: Buyer
  • policy: Returns Accepted
  • time: 30 Days

seller pistondon:

  • rating: 100.0%
  • city: Gadsden, Alabama
  • # reviews: 11837
for models: 850, sportsman, for makes: polaris, part type: piston,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 5365640226851792,

Namura NA-50012-4 Is Similar To:

pistondon logo
5 offers $85.99–$149.02 USD
  • Offer #1: $85.99 price + $0.00 shipping estimate = $85.99* total. Part Number : . Namura Technologies Piston Kit.FREE SHIPPING
  • Offer #2: $149.02 price + $0.00 shipping estimate = $149.02* total. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures Machined Smooth Heads - Reflects combustion heat and reduces carbon buildup, protecting the top of the piston MOS2 (Teflon/Molybdenum) Coated Skirts - A rolled on application process provides a bond that is 10 times stronger than other spray on coatings.FREE SHIPPING
  • Offer #3: $129.37 price + $29.85 shipping estimate = $159.22* total. TWIN NICASIL OEM# 2203929 (MID YEAR 2009 CHANGE TO IRON LINED) 2009???? SPORTSMAN XP 850 2009???? SPORTSMAN XP EPS 850 TWIN IRON LINED CYL OEM# 2204054 (MID 09 TO 03/21/13)???? 2013???? SCRAMBLER 850 HO/EPS HO 2012-13 SPORTSMAN 850 MV 2011-13 SPORTSMAN FOREST 850 2010-13 SPORTSMAN TOURING HO/EPS 850 2011???? SPORTSMAN X2 850 Part No.+$29.85 shipping
  • Offer #4: $85.99 price + $0.00 shipping estimate = $85.99* total.FREE SHIPPING
  • Offer #5: $79.95 price + $0.00 shipping estimate = $79.95* total. 2015 Scrambler 850 models. Manufactured by Namura.FREE SHIPPING

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