1. Pistons, Rings & Piston Kits Products
  2. sku: 7147435745730633
  3. KB PERFORMANCE MN/F1MK

KB PERFORMANCE MN-F1MK Cast Piston Set Fxstc MN/F1MK For

fits model: Softail. make: Harley, Davidson. year: 2007–2010.

F1mk Kb Performance Mn/f1mk Cast Piston Set For 2007-2010 Harley Davidson Fxstc Softail Custom - Ri

( Brand: Kb Performance ), ( Manufacturer Part Number: MN/F1MK ), ( Type: Cast Piston Sets ), ( Compatible Year: 2010 2009 2008 2007 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxstc Softail Custom ), ( Bundle Description: 1 Pc Genuine Kb Cast Piston Sets ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review KB PERFORMANCE Mn/f1mk Cast Piston Set For Harley Davidson Fxstc Custom Ri fits SOFTAIL 2007–2010

Introducing the KB Performance MN/F1MK Cast Piston Set, a high-performance upgrade for your 2007-2010 Harley-Davidson FXSTC Softail motorcycle. This piston set is specifically designed to deliver enhanced power, improved thermal efficiency, and increased durability for your engine.

The MN/F1MK pistons are meticulously crafted using a high-strength, forged aluminum alloy. This material ensures superior rigidity and resistance to engine heat, allowing for optimal performance under heavy loads. Each piston is also nitrided, a process that enhances the surface hardness and reduces friction between the piston and cylinder wall.

These pistons feature a low compression height, which allows for a more efficient combustion process and increased power output. In addition, they have a dish shape that provides better ring sealing and improved piston-to-cylinder contact, ensuring a tight seal and minimizing blowby.

The KB Performance MN/F1MK Cast Piston Set also includes new rings, which are specifically designed to work with the new pistons. These rings are made from a high-quality, chrome molybdenum alloy and feature a tapered design for improved sealing and reduced friction.

Installing these pistons in your FXSTC Softail engine is a straightforward process. They are designed to fit directly into your stock cylinders, and no engine modifications are required. However, it is recommended that you have these pistons installed by a qualified mechanic to ensure proper installation and torque specifications are met.

In summary, the KB Performance MN/F1MK Cast Piston Set is an excellent upgrade for your 2007-2010 Harley-Davidson FXSTC Softail motorcycle. These pistons deliver increased power, improved thermal efficiency, and enhanced durability, making them an excellent investment for any serious Harley-Davidson enthusiast.

Buying a KB Performance MN/F1MK cast piston set for a 2007-2010 Harley-Davidson FXSTC Softail motorcycle comes with several pros and cons that every rider should consider before making a decision.

Pros:

1. Enhanced Performance: The KB Performance piston set is designed to provide improved performance, including increased horsepower and torque. This can lead to a more enjoyable riding experience.

2. Improved Durability: The cast pistons are known for their superior strength and durability compared to stock pistons. This can help extend the life of the engine and reduce the need for frequent repairs or replacements.

3. Better Cooling: The MN/F1MK piston design includes improved cooling features that can help prevent engine overheating and reduce the risk of damage.

Cons:

1. Cost: The KB Performance piston set is more expensive than stock pistons. Riders should consider the cost-benefit analysis and determine if the performance and durability benefits are worth the investment.

2. Installation: Installing aftermarket pistons requires specialized knowledge and tools. It is recommended to have the installation done by a professional mechanic to ensure proper installation and prevent potential issues.

3. Potential Compatibility Issues: It is essential to ensure that the KB Performance piston set is compatible with the specific model and year of the Harley-Davidson FXSTC Softail. Failure to do so could result in compatibility issues and potential engine damage.

Conclusion:

The KB Performance MN/F1MK cast piston set offers several benefits, including enhanced performance, improved durability, and better cooling. However, it also comes with potential drawbacks, such as cost and installation challenges. Riders should carefully weigh the pros and cons and consider their personal riding style and budget before making a decision.

Recommendation:

If a rider is looking to significantly improve the performance and durability of their 2007-2010 Harley-Davidson FXSTC Softail engine, investing in a KB Performance MN/F1MK cast piston set could be a worthwhile investment. However, it is recommended to have the pistons installed by a professional mechanic to ensure proper installation and prevent potential issues. Riders should also thoroughly research the compatibility of the pistons with their specific motorcycle model and year to avoid any compatibility issues.

Details:

Oversize to 3.88in. Cast Piston Kit 103ci. Flat Top - .005in. KB Cast Piston Set for 2007 - 2010 Harley Davidson FXSTC Softail Custom - ri: Status: In Stock.

part #: mnf1mk prices

  • $231.63-$337.95

specifications pistondon:

  • for models: Softail
  • for makes: Harley, Davidson
  • for years: 2007-2010
  • brand: Kb Performance
  • mpn: Mn/f1mk
  • type: Cast Piston Sets
  • compatible year: 2010 2009 2008 2007
  • compatible make: Harley Davidson
  • compatible model: Fxstc Softail Custom
  • bundle description: 1 Pc Genuine Kb Cast Piston Sets
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

offer pistondon:

  • sold: 0
  • started: June 27, 2025
  • options: Ship-to-home
  • availability: In Stock
  • quantity: 1

returns pistondon:

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

seller pistondon:

  • rating: 96.8%
  • # reviews: 9071
  • city: Multiple warehouses

shipping pistondon:

  • transit: 3-5 Days
  • cost: $0.00
  • type: Fixed
  • service: Standard
  • class: Standard

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general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
  • condition: New
for models: softail, for makes: harley, davidson, for years: 2007-2010, type: cast piston sets, compatible year: 2010 2009 2008 2007, compatible make: harley davidson, compatible model: fxstc softail custom, 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: 7147435745730633,

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