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  3. KB PERFORMANCE MN/GN8M

KB PERFORMANCE MN-GN8M Cast Piston Set Fxsts Springer Cv MN/GN8M For

fits model: Softail. make: Harley, Davidson. year: 1988–1999.

Gn8m Kb Performance Mn/gn8m Cast Piston Set For 1988-1999 Harley Davidson Fxsts Springer Softail - Cv

( Brand: Kb Performance ), ( Manufacturer Part Number: MN/GN8M ), ( Type: Cast Piston Sets ), ( Compatible Year: 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxsts Springer Softail ), ( Bundle Description: 1 Pc Genuine Kb Cast Piston Sets ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review KB PERFORMANCE Mn/gn8m Cast Piston Set For Harley Davidson Fxsts Springer Cv fits SOFTAIL 1988–1999

Introducing the KB Performance MN/GN8M Cast Piston Set, a high-performance upgrade for your 1988-1999 Harley-Davidson FXSTS Springer Softail CV engine. This piston set is meticulously engineered to deliver superior power, increased efficiency, and durability to your beloved motorcycle.

The MN/GN8M Cast Piston Set is manufactured using advanced technology and premium materials. Each piston is crafted from a single piece of forged aluminum, ensuring maximum strength and rigidity. The piston crowns are designed with a dish shape that optimizes combustion efficiency and improves power output. The piston skirts feature a state-of-the-art coating that reduces friction and ensures smooth operation.

This piston set is also designed to work seamlessly with your Harley-Davidson's CV carburetor system. The pistons are precisely machined to ensure a perfect fit, eliminating the need for any modifications or adjustments. The piston rings are made from high-quality materials that provide a positive seal, preventing any combustion gases from escaping and ensuring optimal engine performance.

In addition to improved power and efficiency, the KB Performance MN/GN8M Cast Piston Set also offers enhanced durability. The pistons are designed to withstand the rigors of high-performance riding, making them an ideal upgrade for riders who demand the best from their motorcycle.

Installing the piston set is a straightforward process, making it a popular choice among Harley-Davidson enthusiasts. Each piston set comes complete with new piston pins, piston pin bushings, and wrist pin bushings, ensuring a hassle-free installation experience. Additionally, the piston set includes new rings and ring end gaps, ensuring that your engine is properly sealed and optimally performing after the installation.

In summary, the KB Performance MN/GN8M Cast Piston Set is an excellent upgrade for your 1988-1999 Harley-Davidson FXSTS Springer Softail CV engine. With increased power, improved efficiency, and enhanced durability, this piston set is the perfect choice for riders who demand the best from their motorcycle. Whether you're cruising down the open road or pushing your bike to the limit, the KB Performance MN/GN8M Cast Piston Set is the ultimate performance upgrade for your Harley-Davidson.

Pros and Cons of Buying a KB Performance MN/GN8M Cast Piston Set for 1988-1999 Harley-Davidson FXSTS Springer Softail CV

1. Pros:

a. Enhanced Performance: The KB Performance cast piston set is designed to provide improved engine performance. The forged pistons are stronger and more durable than stock pistons, allowing for increased horsepower and torque.

b. Better Thermal Efficiency: These pistons are engineered with a better thermal efficiency, which means they dissipate heat more effectively. This results in a cooler running engine, reducing the risk of detonation and engine damage.

c. Improved Compatibility: These pistons are designed specifically for the 1988-1999 Harley-Davidson FXSTS Springer Softail CV, ensuring a perfect fit and compatibility with the engine.

d. High-Quality Material: The cast pistons are made from high-quality forged aluminum alloy, ensuring longevity and durability.

2. Cons:

a. Higher Cost: The KB Performance cast piston set is more expensive than stock pistons. This may be a deterrent for some riders, especially if they are on a tight budget.

b. Installation Complexity: Installing the new pistons requires a certain level of mechanical expertise. It is recommended to have the pistons installed by a professional to ensure proper installation and prevent any potential damage to the engine.

c. Break-In Period: After installation, the new pistons will require a break-in period. During this time, the rider should follow a specific break-in procedure to allow the pistons to seat properly and prevent any potential damage.

Conclusion:

The KB Performance MN/GN8M Cast Piston Set offers significant performance improvements for the 1988-1999 Harley-Davidson FXSTS Springer Softail CV. These benefits include increased horsepower, better thermal efficiency, improved compatibility, and high-quality materials. However, the set comes with a higher cost, installation complexity, and a break-in period. Ultimately, the decision to purchase this piston set depends on the rider's goals, budget, and mechanical expertise.

Recommendation:

If you are looking for improved engine performance and longevity for your Harley-Davidson FXSTS Springer Softail CV, the KB Performance MN/GN8M Cast Piston Set is a worthwhile investment. However, it is recommended to have the pistons installed by a professional and to follow the proper break-in procedure to ensure the best possible results. Additionally, consider the cost and your budget before making the purchase.

Details:

Domed - Standard Bore 3.498in. Cast Piston Kit 80ci. KB Cast Piston Set for 1988 - 1999 Harley Davidson FXSTS Springer Softail - cv: Status: In Stock.

specifications pistondon:

  • for models: Softail
  • for makes: Harley, Davidson
  • for years: 1988-1999
  • brand: Kb Performance
  • mpn: Mn/gn8m
  • type: Cast Piston Sets
  • compatible year: 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988
  • compatible make: Harley Davidson
  • compatible model: Fxsts Springer Softail
  • bundle description: 1 Pc Genuine Kb Cast Piston Sets
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

offer pistondon:

  • availability: In Stock
  • quantity: 1
  • sold: 0
  • started: February 15, 2026
  • options: Ship-to-home

payments pistondon:

  • wallet: Apple-pay
  • other
  • credit card: Visa

returns pistondon:

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

shipping pistondon:

  • transit: 4-6 Days
  • class: Standard
  • type: Fixed
  • service: Standard
  • cost: $0.00

seller pistondon:

  • # reviews: 17535
  • city: Multiple warehouses
  • rating: 98.7%

general pistondon:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
for models: softail, for makes: harley, davidson, for years: 1988-1999, type: cast piston sets, compatible year: 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988, compatible make: harley davidson, compatible model: fxsts springer softail, bundle description: 1 pc genuine kb cast piston sets, 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: 10636739271634633,

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