1. USED Engine Parts Deals
  2. sku: 8948568321843632
  3. WISECO MN/P4H6

WISECO MN-P4H6 Top End Kit Engine Pistons MN/P4H6

fits model: Ho, Xr, 500, Sportsman. make: Polaris. year: 2001–2005.

P4h6 Wiseco Mn/p4h6 Top End Kit For 2001-2005 Polaris Sportsman 500 Ho - Engine Pistons Xr

( Brand: Wiseco ), ( Manufacturer Part Number: MN/P4H6 ), ( Compatible Year: 2005 2004 2003 2002 2001 ), ( Compatible Model: Sportsman 500 Ho ), ( Bundle Description: 1 Pc Genuine Wiseco Top End Kits ), ( Type: Top End Kits ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review WISECO Mn/p4h6 Top End Kit Polaris Engine Pistons fits SPORTSMAN HO XR 500 2001–2005

The WiseCo MN/P4H6 Top End Kit for the 2001-2005 Polaris Sportsman 500 HO engine is a high-performance upgrade designed to enhance the power and durability of your ATV's engine. This top end kit includes a complete set of pistons, specifically engineered for the Polaris Sportsman 500 HO XR engine with a displacement of 498.6cc.

The pistons in this kit are made from forged aluminum, which ensures superior strength and rigidity compared to cast pistons. Each piston features a unique, optimized dome shape that provides an ideal compression ratio for improved combustion efficiency and increased power output. The piston skirts are designed with a low friction coating to reduce engine wear and improve ring seal for better compression and longer engine life.

The piston rings in this kit are made from high-quality, heat-resistant material and are precision machined to ensure a perfect fit. The top compression ring is designed with a thin, low-friction coating to reduce friction and improve power output, while the second compression ring and oil control ring are designed for optimal sealing and engine protection.

The WiseCo MN/P4H6 Top End Kit also includes new piston pins, which are made from high-strength steel and feature a hardened, chrome-molybdenum coating for added durability. The piston pins are also precision machined to ensure a perfect fit and smooth operation.

This top end kit is an excellent choice for anyone looking to get more power and performance from their Polaris Sportsman 500 HO engine. It is also ideal for those who want to extend the life of their engine by upgrading to high-quality, forged pistons and rings. With its precise fit and excellent performance, the WiseCo MN/P4H6 Top End Kit is a must-have for any serious ATV enthusiast.

The WiseCo MN/P4H6 top end kit for the 2001-2005 Polaris Sportsman 500 HO engine is a popular aftermarket upgrade for those looking to improve the performance and durability of their engine. Here are some pros and cons to consider before making a purchase:

Pros:

1. Enhanced Performance: The WiseCo top end kit includes high-performance pistons, cylinder heads, and other related components that can help increase horsepower and torque, resulting in improved acceleration and overall performance.

2. Durability: The kit is designed to withstand the rigors of off-road riding, making it an excellent choice for those who use their Polaris Sportsman for heavy-duty applications. The high-strength materials used in the pistons and other components help to reduce the risk of engine failure.

3. Improved Engine Life: By upgrading to a higher-performance top end kit, you can potentially extend the life of your engine. The improved design and materials used in the kit can help reduce heat and stress on the engine, leading to a longer lifespan.

4. Better Fuel Efficiency: Some users have reported improved fuel efficiency after installing the WiseCo top end kit. The improved combustion efficiency can help you save money on fuel costs over time.

Cons:

1. Cost: The WiseCo top end kit is not a cheap upgrade. The cost of the kit can be significant, especially when you consider the cost of any necessary tools or labor for the installation.

2. Complex Installation: Installing a top end kit is not a trivial task, and it requires a fair amount of skill and experience. The installation process can be time-consuming and complex, and there is a risk of damaging the engine if the installation is not done correctly.

3. Potential for Engine Damage: There is always a risk of engine damage when making significant modifications. The WiseCo top end kit is designed to be robust and durable, but there is still a risk of damage during the installation process or from other factors like user error or environmental conditions.

Conclusion:

The WiseCo MN/P4H6 top end kit for the 2001-2005 Polaris Sportsman 500 HO engine is an excellent choice for those looking to improve the performance, durability, and lifespan of their engine. The kit includes high-performance components that can help increase horsepower and torque, while also providing improved fuel efficiency and durability. However, the cost and complexity of the installation process are significant drawbacks that should be carefully considered before making a purchase. Ultimately, the decision to buy the kit depends on your budget, skill level, and riding requirements. If you are an experienced mechanic and are willing to invest in a high-performance upgrade for your Polaris Sportsman, then the WiseCo top end kit is definitely worth considering.

part # mnp4h6 price

  • $288.34

specifications atvsienna:

  • for models: Ho, Xr, 500, Sportsman
  • for makes: Polaris
  • for years: 2001-2005
  • brand: Wiseco
  • manufacturer part number: MN/P4H6
  • compatible year: 2005 2004 2003 2002 2001
  • compatible model: Sportsman 500 Ho
  • bundle description: 1 Pc Genuine Wiseco Top End Kits
  • type: Top End Kits
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

payments atvsienna:

  • other
  • wallet: Google-pay
  • credit card: Mastercard

offer atvsienna:

  • started: September 24, 2025
  • sold: 0
  • quantity: 1
  • availability: In Stock
  • options: Ship-to-home

general atvsienna:

  • condition: New
  • ATV, Side-by-Side UTV Parts Accessories > Engines Engine Parts > Other Engine Parts

shipping atvsienna:

  • cost: $0.00
  • type: Fixed
  • transit: 3-8 Days
  • class: Standard
  • service: Standard

seller atvsienna:

  • rating: 97.2%
  • # reviews: 10894

returns atvsienna:

  • time: 30 Days
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  • policy: Returns Accepted
for models: ho, xr, 500, sportsman, for makes: polaris, for years: 2001-2005, compatible year: 2005 2004 2003 2002 2001, compatible model: sportsman 500 ho, bundle description: 1 pc genuine wiseco top end kits, type: top end kits, core charge: free no core charge, fitment type: direct replacement,
category: atv parts > atv, side-by-side utv parts accessories > engines engine parts > engine parts, sku: 8948568321843632,

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