NAMURA NA-50011-4 Piston Kit 97.57MM

( Brand: Namura ), ( Manufacturer Part Number: NA-50011-4 ), ( Part Type: Piston )

Review NAMURA Piston Kit For Polaris 97.57mm fits SPORTSMAN 550 2009–2013

Introducing the Namura NA-50011-4 Piston Kit, meticulously engineered to deliver exceptional performance and durability for your 2009-2013 Polaris Sportsman 550 with a 97.57mm bore size. This piston kit is a must-have for those seeking to enhance their off-road vehicle's power and efficiency.

The NA-50011-4 Piston Kit is comprised of four high-quality forged pistons. Each piston features a state-of-the-art design with optimized crown shape and skirt thickness, ensuring superior strength and reliability. The piston crowns are engineered with a polished finish to minimize friction and promote smooth engine operation.

This piston kit is also designed to improve your engine's breathing capabilities. The piston tops are engineered with an optimized combustion chamber design, which allows for a more efficient air-fuel mixture. This results in improved combustion efficiency, increased power output, and reduced emissions.

Moreover, the NA-50011-4 Piston Kit is manufactured with the utmost precision to ensure perfect fit and function. Each piston is carefully measured and machined to meet the exact specifications of your Polaris Sportsman 550 engine. This ensures a hassle-free installation process and eliminates the need for any additional modifications.

The piston kit comes with all necessary hardware, including piston rings and wrist pins. This ensures a complete and comprehensive solution for your engine upgrade needs. The hardware is made from high-quality materials, ensuring superior strength and longevity.

In conclusion, the Namura NA-50011-4 Piston Kit is an excellent investment for those seeking to upgrade the performance of their 2009-2013 Polaris Sportsman 550 with a 97.57mm bore size. With its high-quality forged pistons, optimized combustion chamber design, and precise manufacturing, this piston kit delivers exceptional power, efficiency, and reliability.

The Namura NA-50011-4 piston kit is a popular aftermarket option for the Polaris Sportsman 550 97.57mm engines produced between 2009 and 2013. Here are some pros and cons that could help you make an informed decision about whether to purchase this piston kit.

1. Enhanced Performance: The Namura piston kit is designed to provide improved performance by increasing the engine's compression ratio, resulting in more power and better fuel efficiency.

2. Durability: These pistons are made from high-quality forged aluminum alloy, which is known for its strength and durability. This makes the pistons less prone to failure, especially in high-performance applications.

3. Improved Engine Longevity: By upgrading to a higher-quality piston kit, you can improve the overall longevity of your engine. The forged aluminum alloy pistons are less likely to fail, reducing the need for frequent engine rebuilds or replacements.

4. Customizable: The Namura piston kit comes in various sizes to suit different engine applications. This allows you to tailor the kit to your specific engine, ensuring optimal performance and compatibility.

1. Cost: The Namura piston kit is more expensive than the OEM (original equipment manufacturer) pistons. However, the additional cost may be justified by the improved performance and durability.

2. Installation Complexity: Installing a piston kit can be a complex process that requires specialized tools and knowledge. It is recommended that you have the kit installed by a professional to ensure proper installation and functioning.

3. Potential Loss of Factory Warranty: Installing aftermarket parts like the Namura piston kit may void your factory warranty. Be sure to check with your dealership or manufacturer regarding warranty coverage.

The Namura NA-50011-4 piston kit is an excellent option for Polaris Sportsman 550 97.57mm engine owners looking to enhance performance and durability. While the upfront cost may be higher than OEM pistons, the potential benefits, such as improved engine longevity and increased power, make it a worthwhile investment. However, it is essential to consider the installation complexity and potential loss of factory warranty before making a purchase. Ultimately, the decision to buy this piston kit depends on your priorities, budget, and willingness to invest in performance upgrades for your Polaris Sportsman 550.

Details:

MOS2 Teflon/Molybdenum Coated Skirts - A rolled on application process provides a bond that is 10 times stronger than other spray coatings. Free Shipping. Anodized Domes - Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized. Namura Technologies Piston Kit: Part Number: NA-50011-4.

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 piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%.

part #: na500114 prices

• $77.43-$143.61

specifications pistondon:

• for models: 550, Sportsman
• for makes: Polaris
• for years: 2009-2013
• brand: Namura
• mpn: Na-50011-4
• part type: Piston

seller pistondon:

• # reviews: 11948
• city: Gadsden, Alabama
• rating: 100.0%

returns pistondon:

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

offer pistondon:

• availability: In Stock
• started: November 12, 2025
• quantity: 2
• sold: 0
• options: Ship-to-home

shipping pistondon:

• service: Standard
• type: Fixed
• transit: 2-6 Days
• cost: $0.00
• class: Standard

general pistondon:

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

payments pistondon:

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

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