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STRAIGHTLINE PERFORMANCE 9770-S509381-50 Slp Fix Piston Kit Pro 155 Dominator

fits model: Rmk, 800, Terrain. make: Polaris. year: 2015.

9770-s509381-50 Straightline Performance Slp Fix It Piston Kit For 2015 Polaris 800 Pro-rmk 155 Terrain Dominator

( Brand: Straightline Performance ), ( Manufacturer Part Number: 9770-S509381-50 ), ( Part Type: Piston )

Review STRAIGHTLINE PERFORMANCE Slp Fix It Piston Kit Polaris Pro rmk Dominator fits TERRAIN RMK 800 2015

Introducing the Straightline Performance 9770-S509381-50 SLP Fix Piston Kit, specifically designed for the 2015 Polaris 800 Pro-RMK 155 Terrain Dominator. This piston kit is an excellent upgrade for those seeking enhanced engine performance and durability.

The SLP Fix Piston Kit is engineered with high-quality materials to ensure a perfect fit and optimal engine operation. Each piston is forged from aerospace-grade 2618-T6 aluminum, providing exceptional strength and rigidity. The piston skirts are coated with a hard-anodized finish, which not only enhances their durability but also reduces friction for improved efficiency.

The pistons feature a unique design that addresses common issues found in OEM pistons, such as piston slap. The SLP pistons have a modified piston skirt shape and a custom piston pin design, which help to eliminate piston slap and reduce noise. This results in a smoother, quieter, and more enjoyable riding experience.

The piston kit also includes a set of rings that are specifically designed to work with the upgraded pistons. These rings are made from high-performance materials, ensuring a proper seal and maximum power transfer from the piston to the crankshaft.

Installing the SLP Fix Piston Kit is a straightforward process. The kit includes all necessary hardware, making it a convenient and hassle-free upgrade for your Polaris 800 Pro-RMK 155 Terrain Dominator.

In summary, the Straightline Performance 9770-S509381-50 SLP Fix Piston Kit is an excellent investment for those who want to enhance their Polaris 800 Pro-RMK 155 Terrain Dominator's performance and durability. With its high-quality materials, innovative design, and easy installation, this piston kit is an essential upgrade for any serious snowmobiler.

Pros and Cons of Buying a 9770-S509381-50 SLP Fix Piston Kit for a 2015 Polaris 800 Pro-RMK 155 Terrain Dominator

1. Pros:

a. Improved Engine Performance: This piston kit is designed to enhance the overall performance of your 2015 Polaris 800 Pro-RMK 155 Terrain Dominator. It provides better compression ratio and combustion efficiency, resulting in increased horsepower and torque.

b. Durability: The SLP Fix piston kit is made from high-quality materials, ensuring long-lasting durability. It is designed to withstand the rigors of off-road riding, making it an excellent investment for those who frequently use their snowmobile.

c. Easy Installation: The kit comes with all necessary hardware for installation, making the process relatively straightforward. It typically takes around 4-6 hours to complete the installation, depending on your mechanical skills and experience.

d. Cost-Effective: Compared to other performance upgrades, the piston kit is a more cost-effective option. It provides significant performance improvements without the need for major engine modifications or expensive aftermarket parts.

2. Cons:

a. Complex Installation: While the installation process is not overly complicated, it does require a certain level of mechanical expertise and experience. If you are not confident in your abilities, it is recommended to seek professional assistance to avoid potential damage to your snowmobile.

b. Potential Engine Noise: Some users have reported an increase in engine noise after installing the piston kit. This is due to the increased compression ratio and improved combustion efficiency, which can cause more noise during operation.

c. Higher Fuel Consumption: The improved engine performance may result in higher fuel consumption. This is to be expected with any performance upgrade, and it is important to consider the additional fuel costs when deciding whether to purchase the kit.

Conclusion:

The 9770-S509381-50 SLP Fix piston kit for a 2015 Polaris 800 Pro-RMK 155 Terrain Dominator offers significant performance improvements, including increased horsepower and torque, durability, and easy installation. However, it does come with some potential drawbacks, such as the need for mechanical expertise during installation, increased engine noise, and higher fuel consumption.

Recommendation:

If you are a frequent off-road rider looking to enhance the performance of your 2015 Polaris 800 Pro-RMK 155 Terrain Dominator, the SLP Fix piston kit is a worthwhile investment. However, it is important to consider your mechanical abilities and the potential costs associated with the installation and increased fuel consumption before making the purchase. If you are unsure about the installation process or have limited mechanical experience, it is recommended to seek professional assistance to ensure a successful and safe installation.

Details:

Wrist pins and cir clips included, Titanium nitrite coated rings for faster break in longer life, Precision Ground spacer plate ensures precise fit. Compatibility: Years: Make: model: Application: Notes: 2017 - 2017 Polaris800 PRO-RMK 163 LE, 2010 Polaris800 Dragon, Dragon RMK 163, Assault 146, 2015 Polaris800 155 Terrain Dominator, 155, IQ, 2014 Polaris800 INDY SP 2011 2019 Polaris800 174 Switchback, 2012 Rush PRO-R 2016 2020 Polaris800 3in. SLP Fix It Piston Kit for 2015 Polaris 800 PRO-RMK 155 Terrain Dominator: Includes: Custom WISECO pistons, spacer plate, dowel pins base gasket and bolts, Stronger, longer pistons resist skirt collapse.: Brand: Straightline Performance, model Number: 9770-S509381-50.

Parts without fitment are to be assumed universal and may require vehicle modification. Anodized to prevent corrosion, Added case volume provides a 2-3 HP gain. I need to exchange an item. This is helpful if you are buying multiple items.

specifications enginesnowmobile:

  • for models: Rmk, 800, Terrain
  • for makes: Polaris
  • for years: 2015
  • brand: Straightline Performance
  • mpn: 9770-s509381-50
  • part type: Piston

general enginesnowmobile:

  • Snowmobile Parts > Engines Components > Snowmobile Engine Components
  • condition: New

shipping enginesnowmobile:

  • cost: $0.00
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  • type: Fixed

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  • city: Boise, ID
  • rating: 99.6%
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offer enginesnowmobile:

  • sold: 0
  • availability: In Stock
  • options: Ship-to-home
  • started: September 24, 2025
  • quantity: 9

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for models: rmk, 800, terrain, for makes: polaris, for years: 2015, part type: piston,
category: snowmobile parts > engines components > snowmobile engine components, sku: 17813796792199622,
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