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  3. WISECO MN/4NJD

WISECO MN-4NJD Piston Kit Fxstc Dq MN/4NJD

fits model: Softail. make: Harley, Davidson. year: 1986–1999.

4njd Wiseco Mn/4njd K Piston Kit For 1986-1999 Harley Davidson Fxstc Softail Custom - Dq

( Brand: Wiseco ), ( Manufacturer Part Number: MN/4NJD ), ( Type: K Piston Kits ), ( Compatible Year: 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxstc Softail Custom ), ( Bundle Description: 1 Pc Genuine Wiseco K Piston Kits ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review WISECO Mn/4njd Piston Kit For Harley Davidson Fxstc Custom Dq fits SOFTAIL 1986–1999

Introducing the WiseCo MN/4NJD piston kit, an essential upgrade for Harley-Davidson FXSTC Softail DQ motorcycles manufactured between 1986 and 1999. This piston kit, designed by WiseCo, a leading aftermarket parts manufacturer, promises to enhance the performance and durability of your engine.

The MN/4NJD piston kit comes with a complete set of four pistons, specifically engineered to fit the Harley-Davidson FXSTC Softail DQ engine. These pistons are precision-machined from high-quality forged aluminum alloy, ensuring superior strength and reliability. Each piston features a unique, full-dome design that increases compression and power output for improved engine performance.

The piston tops are coated with a low-friction, thermal-barrier skirt coating. This advanced coating reduces friction between the piston and cylinder wall, leading to smoother operation, decreased engine heat, and extended component life. Additionally, the piston skirts are optimized for improved ring seal, reducing blow-by and ensuring efficient combustion.

The pistons also include WiseCo's exclusive, patented piston cooling design. This innovative feature helps dissipate heat more effectively, reducing the risk of engine overheating and increasing the longevity of the engine components.

Each piston in the kit comes with matching piston rings, ensuring a perfect fit and seamless installation. The piston rings are made from high-tensile, heat-treated steel, ensuring a strong and reliable seal. The piston rings also feature a chamfered edge for easy installation and improved ring seal.

This WiseCo MN/4NJD piston kit comes with all necessary hardware, including piston pins, piston pin bushings, and piston rings clips. The piston pins are made from heat-treated steel, ensuring a strong connection between the piston and connecting rod. The piston pin bushings are precision-machined to ensure a perfect fit and long-lasting performance.

In conclusion, the WiseCo MN/4NJD piston kit is an exceptional upgrade for the Harley-Davidson FXSTC Softail DQ engine. With its high-quality materials, advanced designs, and innovative features, this piston kit promises to enhance engine performance, increase power output, and extend the life of your engine components.

The Wiseco MN/4NJD piston kit is a popular aftermarket option for Harley-Davidson FXSTC Softail DQ motorcycles produced between 1986 and 1999. This piston kit is designed to enhance engine performance and durability. Here are some pros and cons to consider before making a purchase.

Pros:

1. Enhanced Performance: Wiseco pistons are known for their high-performance capabilities. This piston kit can help improve horsepower and torque output, resulting in a more responsive and powerful engine.

2. Durability: Wiseco pistons are forged from high-quality materials, making them stronger and more durable than OEM pistons. They can withstand higher compression ratios and heat, which is beneficial for high-performance applications.

3. Customizable: The Wiseco MN/4NJD piston kit offers several options for piston size, compression ratio, and ring package. This allows riders to tailor the kit to their specific riding style and engine modifications.

4. Improved Engine Life: The Wiseco piston kit can help reduce engine wear and tear, as the forged pistons are stronger and more resilient than OEM pistons.

Cons:

1. Cost: The Wiseco MN/4NJD piston kit can be more expensive than OEM pistons. However, the performance and durability benefits may justify the investment for some riders.

2. Installation Complexity: Installing the Wiseco piston kit requires disassembling the engine, which can be a complex and time-consuming process. It may be necessary to hire a professional mechanic to ensure proper installation.

3. Compatibility: The Wiseco MN/4NJD piston kit is designed for specific engine configurations. Riders must ensure that the kit is compatible with their particular motorcycle model and any existing modifications.

4. Noise Level: Some riders have reported an increase in engine noise after installing the Wiseco piston kit. This is due to the higher compression ratio and improved engine performance, which can cause increased combustion noise.

Conclusion:

The Wiseco MN/4NJD piston kit offers several advantages for Harley-Davidson FXSTC Softail DQ motorcycles produced between 1986 and 1999. These benefits include enhanced performance, increased durability, customizability, and improved engine life. However, the kit comes with some disadvantages, such as a higher cost, installation complexity, compatibility concerns, and potential noise increase.

If you are looking to improve your motorcycle's performance and durability and are willing to invest in a high-quality aftermarket piston kit, the Wiseco MN/4NJD piston kit may be worth considering. However, it is essential to carefully evaluate your specific riding needs, engine configuration, and budget before making a purchase. Additionally, it is recommended to consult with a professional mechanic to ensure proper installation and compatibility.

Details:

Oversize to 3.508in. Domed - .010in. K Piston Kit 80ci. Wiseco K Piston Kit for 1986 - 1999 Harley Davidson FXSTC Softail Custom - dq: Status: In Stock.

part #: mn4njd price

  • $393.37

specifications pistondon:

  • for models: Softail
  • for makes: Harley, Davidson
  • for years: 1986-1999
  • brand: Wiseco
  • mpn: Mn/4njd
  • type: K Piston Kits
  • compatible year: 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987
  • compatible make: Harley Davidson
  • compatible model: Fxstc Softail Custom
  • bundle description: 1 Pc Genuine Wiseco K Piston Kits
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

general pistondon:

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

shipping pistondon:

  • type: Fixed
  • class: Standard
  • service: Standard
  • transit: 5-11 Days
  • cost: $0.00

offer pistondon:

  • availability: In Stock
  • options: Ship-to-home
  • quantity: 1
  • sold: 0
  • started: May 22, 2026

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  • city: Multiple warehouses
  • # reviews: 23122
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for models: softail, for makes: harley, davidson, for years: 1986-1999, type: k piston kits, compatible year: 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987, compatible make: harley davidson, compatible model: fxstc softail custom, bundle description: 1 pc genuine wiseco k piston kits, core charge: free no core charge, fitment type: direct replacement,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 12533507509443813,

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