PARTS UNLIMITED 4351-P300543-31 Piston Kit Standard 85MM

( Manufacturer Part Number: 4351-P300543-31 ), ( Part Type: Piston )

Review PARTS UNLIMITED Piston Kit standard Bore 85mm Polaris fits RMK 800 2000–2005

Introducing the Unlimited 4351-P300543-31 piston kit, specifically designed for Polaris 800 RMK snowmobiles manufactured between 2000 and 2005. This high-performance piston kit is an excellent upgrade for riders seeking improved power, reliability, and durability.

The Unlimited 4351-P300543-31 piston kit includes three pistons, each crafted from forged aluminum. The pistons are engineered with a precise piston-to-wall clearance, ensuring optimal combustion efficiency and reducing the risk of engine damage. These pistons are also designed with a unique crown shape that provides increased compression and improved power output.

The piston kit also features new rings, including a compression ring, oil control ring, and skirt ring. These rings are made from high-quality materials that provide superior sealing and reduced friction, resulting in improved engine performance and longer engine life.

Additionally, the Unlimited 4351-P300543-31 piston kit includes new wrist pins, which are precision machined to ensure a perfect fit and proper movement of the piston. The wrist pins are also made from high-strength steel, providing added durability and reliability.

This piston kit is also compatible with the stock crankshaft and connecting rods, making it a cost-effective and convenient upgrade for Polaris 800 RMK snowmobile owners. The kit comes with clear installation instructions, ensuring a straightforward installation process.

Upgrading to the Unlimited 4351-P300543-31 piston kit is an excellent investment for any Polaris 800 RMK snowmobile owner seeking improved power, reliability, and durability. With top-quality components and precise engineering, this piston kit is sure to provide excellent performance and long-lasting value.

Buying an unlimited 4351-P300543-31 piston kit for a 2000-2005 Polaris 800 RMK snowmobile comes with several pros and cons that riders should consider before making a purchase.

1. Improved Performance: Upgrading to high-performance pistons can result in increased power output, improved throttle response, and better overall engine performance.

2. Durability: Unlimited pistons are often made of stronger materials than OEM (original equipment manufacturer) pistons, which can lead to longer engine life and fewer repairs.

3. Customization: Upgrading to high-performance pistons allows riders to tailor their snowmobile's engine to their specific riding style and preferences.

1. Cost: Aftermarket performance parts like unlimited piston kits can be more expensive than OEM parts.

2. Installation: Installing aftermarket pistons requires technical expertise and specialized tools, which may require the assistance of a professional mechanic.

3. Warranty: Using aftermarket parts like unlimited pistons may void the manufacturer's warranty on the snowmobile.

Upgrading to an unlimited 4351-P300543-31 piston kit for a 2000-2005 Polaris 800 RMK snowmobile can result in improved performance, increased durability, and better overall engine life. However, the higher cost, installation complexity, and potential warranty void may be deterrents for some riders. Ultimately, the decision to purchase an aftermarket piston kit depends on the rider's budget, technical expertise, and desired riding experience.

For riders who prioritize performance and durability and have the necessary technical expertise and budget, an unlimited 4351-P300543-31 piston kit could be an excellent investment for their Polaris 800 RMK snowmobile. However, for those who are unsure about the installation process or prefer the peace of mind that comes with the manufacturer's warranty, an OEM piston kit may be a better choice. Riders should carefully weigh the pros and cons before making a decision.

Details:

Compatibility: Years: Make: model: Application: Notes: 2004 - 2004 Polaris800 Classic, 2001 Polaris800 RMK SP 151, 2000 2005 Polaris800 RMK, 2003 Polaris800 SKS, LE, PRO X, XC SP, 144, Switchback. Parts without fitment are to be assumed universal and may require vehicle modification.: Brand: Parts Unlimited, model Number: 4351-P300543-31. This is helpful if you are buying multiple items.

I need to exchange an item.

part #: 4351p30054331 prices

• $34.95-$49.00

specifications enginesnowmobile:

• for models: Rmk, 800
• for makes: Polaris
• for years: 2000-2005
• mpn: 4351-p300543-31
• part type: Piston

offer enginesnowmobile:

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

payments enginesnowmobile:

• wallet: Apple-pay
• other
• credit card: Diners-club

shipping enginesnowmobile:

• service: Standard
• class: Standard
• transit: 3-6 Days
• type: Fixed
• cost: $0.00

general enginesnowmobile:

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

seller enginesnowmobile:

• # reviews: 64293
• city: Sparks, NV
• rating: 99.5%

returns enginesnowmobile:

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

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