1. Pistons, Rings & Piston Kits Products
  2. sku: 10639921745288713
  3. KB PERFORMANCE MN/C5ZR

KB PERFORMANCE MN-C5ZR Cast Piston Set Fxst Standard Zs MN/C5ZR For

fits model: Softail. make: Harley, Davidson. year: 1984–1999.

C5zr Kb Performance Mn/c5zr Cast Piston Set For 1984-1999 Harley Davidson Fxst Softail Standard - Zs

( Brand: Kb Performance ), ( Manufacturer Part Number: MN/C5ZR ), ( Type: Cast Piston Sets ), ( Compatible Year: 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxst Softail Standard ), ( Bundle Description: 1 Pc Genuine Kb Cast Piston Sets ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review KB PERFORMANCE Mn/c5zr Cast Piston Set For Harley Davidson Fxst Standard Zs fits SOFTAIL 1984–1999

Introducing the KB Performance MN/C5ZR Cast Piston Set, an exceptional upgrade for your Harley-Davidson FXST Softail Standard ZS motorcycle manufactured between 1984 and 1999. These high-performance pistons are meticulously crafted to deliver increased power, torque, and efficiency, making them an excellent choice for riders seeking to enhance their riding experience.

The KB Performance MN/C5ZR Cast Pistons are made from a robust and durable forged aluminum alloy, ensuring superior strength and heat resistance. Each piston undergoes a rigorous manufacturing process, including precision machining and careful inspection, to ensure a perfect fit and optimal performance.

These pistons feature a compact design with a low compression height, resulting in a more efficient combustion process. The piston skirts are optimally designed to minimize friction and reduce wear on the cylinder walls, ensuring a smooth and reliable operation.

The KB Performance MN/C5ZR Cast Pistons are also designed to work seamlessly with Harley-Davidson's factory connecting rods and crankshafts, eliminating the need for costly and complex engine rebuilds. The piston rings are made from a high-quality material that ensures a proper seal in the cylinder bore, preventing oil leaks and ensuring optimal engine performance.

Installing these pistons in your Harley-Davidson FXST Softail Standard ZS is a straightforward process, thanks to their drop-in design. No additional modifications or custom fabrication are required, making them a practical and convenient upgrade option.

In summary, the KB Performance MN/C5ZR Cast Piston Set is an excellent investment for Harley-Davidson FXST Softail Standard ZS riders seeking to boost their engine performance, improve efficiency, and enhance their riding experience. These pistons are meticulously crafted from high-quality materials, feature a compact design for optimal efficiency, and are easy to install. With their drop-in design, no additional modifications or complicated engine rebuilds are required, making them a practical and convenient upgrade choice.

Pros and Cons of Buying KB Performance MN/C5ZR Cast Piston Set for 1984-1999 Harley-Davidson FXST Softail Standard ZS

1. Pros:

a. Enhanced Performance: KB Performance pistons are designed to provide improved combustion efficiency, leading to increased horsepower and torque.

b. Durability: Cast pistons are stronger and more resilient than their forged counterparts, making them an excellent choice for high-performance applications.

c. Enhanced Engine Appearance: The polished finish of these pistons adds an aesthetically pleasing touch to the engine.

d. Compatibility: These pistons are specifically designed for Harley-Davidson FXST Softail Standard ZS models from 1984 to 1999, ensuring a perfect fit.

2. Cons:

a. Cost: Cast pistons, particularly those from high-performance manufacturers like KB Performance, can be more expensive than their forged counterparts.

b. Installation Complexity: Installing these pistons requires a significant amount of skill and expertise, and should only be done by a professional mechanic.

c. Potential Engine Noise: Some users have reported increased engine noise after installing these pistons, which may be a concern for those who value a quiet ride.

3. Conclusion:

The KB Performance MN/C5ZR cast piston set offers several advantages, including enhanced performance, durability, and engine aesthetics. However, it also comes with some drawbacks, such as a higher cost, increased installation complexity, and the potential for increased engine noise. Ultimately, the decision to purchase these pistons depends on your priorities, budget, and technical expertise.

4. Recommendation:

If you're looking to significantly improve the performance of your Harley-Davidson FXST Softail Standard ZS and are willing to invest in high-quality components, the KB Performance MN/C5ZR cast piston set could be an excellent choice. On the other hand, if you're on a tight budget or prefer a quieter ride, you may want to consider other options. Regardless of your decision, it's crucial to have the installation done by a professional mechanic to ensure the best possible result.

Details:

Domed - Standard Bore 3.498in. Cast Piston Kit 80ci. KB Cast Piston Set for 1984 - 1999 Harley Davidson FXST Softail Standard - zs: Status: In Stock.

part #: mnc5zr prices

  • $231.63-$337.95

specifications pistondon:

  • for models: Softail
  • for makes: Harley, Davidson
  • for years: 1984-1999
  • brand: Kb Performance
  • mpn: Mn/c5zr
  • type: Cast Piston Sets
  • compatible year: 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987
  • compatible make: Harley Davidson
  • compatible model: Fxst Softail Standard
  • bundle description: 1 Pc Genuine Kb Cast Piston Sets
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

payments pistondon:

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

seller pistondon:

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

shipping pistondon:

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

offer pistondon:

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

general pistondon:

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

returns pistondon:

  • policy: Returns Accepted
  • paid by: Seller
  • time: 30 Days
for models: softail, for makes: harley, davidson, for years: 1984-1999, type: cast piston sets, compatible year: 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987, compatible make: harley davidson, compatible model: fxst softail standard, 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: 10639921745288713,

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