WISECO MN-B8FN Top End Kit Engine Ou MN/B8FN

( Brand: Wiseco ), ( Manufacturer Part Number: MN/B8FN ), ( Compatible Year: 2008 2007 ), ( Compatible Model: Sportsman 800 Efi X2 ), ( 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/b8fn Top End Kit Polaris Engine Ou fits SPORTSMAN X2 EFI 800 2007–2008

Introducing the WiseCo MN/B8FN Top End Kit specifically designed for the 2007-2008 Polaris Sportsman 800 EFI X2 engine. This top-of-the-line kit is engineered to deliver exceptional performance and durability for your off-road vehicle.

The WiseCo Top End Kit includes high-performance cylinder heads and matching pistons. These components are meticulously crafted using advanced manufacturing techniques to ensure superior fitment and optimal engine functionality. The cylinder heads feature enhanced combustion chamber designs, which improve airflow and fuel mixture for increased power output and improved throttle response. The pistons are forged from high-strength materials, ensuring reliable performance under heavy loads and high RPMs.

The kit also includes high-performance intake and exhaust valves. These valves are designed to maximize airflow and exhaust gases, resulting in improved engine breathing, better fuel efficiency, and increased horsepower. The intake valves are made from a lightweight, durable material to allow for quicker opening and closing, while the exhaust valves are designed to withstand the high temperatures and pressures generated by the engine.

The WiseCo Top End Kit is also designed to enhance the appearance of your engine. The high-performance cylinder heads come with polished fins and new valve covers, giving your engine an eye-catching and unique look.

This kit is easy to install, with clear instructions and all necessary hardware included in the box. WiseCo's commitment to quality and customer satisfaction is evident in the design and manufacturing of this top-end kit. Upgrade your Polaris Sportsman 800 EFI X2 engine with the WiseCo MN/B8FN Top End Kit and experience the difference in power, performance, and durability.

Wiseco MN/B8FN Top End Kit for 2007-2008 Polaris Sportsman 800 EFI X2: A Detailed Analysis

The Wiseco MN/B8FN Top End Kit is a popular upgrade for the 2007-2008 Polaris Sportsman 800 EFI X2 engine. This kit offers several benefits, but like any modification, it comes with its own set of pros and cons. In this analysis, we will discuss the key aspects of this top end kit and provide a conclusion with a recommendation.

1. Increased Performance: The Wiseco MN/B8FN Top End Kit is designed to enhance the engine's power output. The high-performance pistons and cylinders provide better compression and combustion efficiency, resulting in increased horsepower and torque.

2. Durability: Wiseco is known for its high-quality engine components. The top end kit is engineered to withstand the rigors of off-road riding, ensuring longer engine life and reduced maintenance costs.

3. Enhanced Throttle Response: The kit's high-performance components contribute to improved throttle response, offering smoother power delivery and better overall performance.

1. Cost: The Wiseco MN/B8FN Top End Kit is a premium upgrade, and the cost can be a significant investment for some riders.

2. Installation Complexity: Installing the top end kit requires a certain level of mechanical expertise and specialized tools. It is not a DIY project for most enthusiasts and may require professional assistance.

3. Potential Power Increase: While increased power is generally desirable, it may not be suitable for all riding applications. In some cases, the additional power may not be necessary or may even be unwanted, leading to unnecessary complexity and potential safety concerns.

The Wiseco MN/B8FN Top End Kit offers several benefits for the 2007-2008 Polaris Sportsman 800 EFI X2 engine, including increased performance, durability, and enhanced throttle response. However, the cost, complexity of installation, and potential power increase are valid concerns. Ultimately, the decision to invest in this top end kit depends on the rider's goals, budget, and mechanical expertise. If you are an experienced rider looking for maximum performance and are willing to invest in a high-quality upgrade, the Wiseco MN/B8FN Top End Kit is a worthy consideration. On the other hand, if you are a casual rider or have limited mechanical expertise, this upgrade may not be necessary or practical.

For riders seeking optimal performance and durability from their 2007-2008 Polaris Sportsman 800 EFI X2, the Wiseco MN/B8FN Top End Kit is a solid investment. Ensure you have the necessary resources, including a skilled mechanic and the required tools, to properly install the kit. If you are unsure about your capabilities or have concerns about the potential power increase, consider consulting a professional or researching alternative performance upgrades that may better suit your needs.

part # mnb8fn price

• $403.54

specifications atvsienna:

• for models: X2, Efi, 800, Sportsman
• for makes: Polaris
• for years: 2007-2008
• brand: Wiseco
• manufacturer part number: MN/B8FN
• compatible year: 2008 2007
• compatible model: Sportsman 800 Efi X2
• bundle description: 1 Pc Genuine Wiseco Top End Kits
• type: Top End Kits
• core charge: Free No Core Charge
• fitment type: Direct Replacement

general atvsienna:

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

seller atvsienna:

• # reviews: 13832
• rating: 98.1%

payments atvsienna:

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

returns atvsienna:

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

offer atvsienna:

• availability: In Stock
• quantity: 1
• started: November 22, 2025
• options: Ship-to-home
• sold: 0

shipping atvsienna:

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

Wiseco MN-B8FN Is Similar To:

• Suzuki 11210-01c11-0f0 1988-92 Lt250r Lt 250 R Quad Racer Oem Cylinder Jug With Wiseco Piston Kit (14.6% similar) $395.99. (November 6th, 2024)
• Polaris 570 Wiseco Wossner Bpratv 1204594 Rzr Redo Top End Replacement Cylinder Head Ported Assembly Repair (29.8% similar) $279.00–$899.99. (November 12th, 2024)
• Wiseco 4396m08100 Honda Atc 350x 1986 Cylinder 12 1 Piston Fresh Bore Top End Rebuild #182 (23.4% similar) $201.99–$234.60. (December 1st, 2024)
• Wiseco 4393m8100 Honda Atc 350x 1986 Cylinder Piston Fresh Bore Top End Rebuild #16 (24.4% similar) $211.99–$225.99. (December 1st, 2024)
• Polaris 3085828 335 Cylinder Piston 100 Refund Sportsman Wiseco Top End Kit #183 (24.8% similar) $184.59–$349.95. (December 1st, 2024)
• Suzuki 11210-05g00-0f0 2002-17 Ozark 250 Ltz250 Quad Sport Cylinder Jug Wiseco Piston Topend Kit (20.3% similar) $179.95–$422.76. (December 4th, 2024)
• Wiseco Piston 40105m09900 99.00mm 10.2 1 #40105m09900 Polaris Rzr 570/sportsman 570 (39% similar) $190.97–$221.30. (December 14th, 2024)
• Wiseco 2460-w145498-atv Piston Kit-2.00mm Oversize To 68.00mm For 1987-1989 Honda Trx250r Atv (33.3% similar) $206.99. (December 18th, 2024)
• Wiseco Piston S660 Wrist Pin Straight #s660 For Honda Trx450r Sportrax 450r 2006-2009 (37.3% similar) $17.95–$22.79. (December 23rd, 2024)
• Wiseco 4737m10000 Yamaha Raptor 660 Top End Rebuild Kit Cylinder 11 1 Piston Gaskets #118 (29.4% similar) $211.97–$338.99. (December 25th, 2024)
• Wiseco Piston Pwr223-800b Garage Buddy Engine Rebuild Kit Polaris Sportsman/rzr 800 (47.6% similar) $1250.99–$1259.99. (December 26th, 2024)