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  3. KB PERFORMANCE MN/E4A3

KB PERFORMANCE MN-E4A3 Cast Piston Set Fxstbi Night Train Ut MN/E4A3 For

fits make: Harley, Davidson. year: 2001–2006.

E4a3 Kb Performance Mn/e4a3 Cast Piston Set For 2001-2006 Harley Davidson Fxstbi Night Train - Ut

( Brand: Kb Performance ), ( Manufacturer Part Number: MN/E4A3 ), ( Type: Cast Piston Sets ), ( Compatible Year: 2006 2005 2004 2003 2002 2001 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxstbi Night Train ), ( Bundle Description: 1 Pc Genuine Kb Cast Piston Sets ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review KB PERFORMANCE Mn/e4a3 Cast Piston Set For Harley Davidson Fxstbi Night Train Ut fits 2001–2006

Introducing the KB Performance MN/E4A3 Cast Piston Set, an excellent upgrade solution for 2001-2006 Harley-Davidson FXSTBI Night Train and Utility models. This piston set is designed to deliver enhanced performance, reliability, and durability, making it an ideal choice for riders who demand the best from their motorcycle.

The KB Performance MN/E4A3 Cast Piston Set is meticulously crafted from high-quality, forged aluminum material. This ensures that each piston is strong, lightweight, and capable of withstanding the rigors of high-performance riding. The pistons are also designed with a precise size and shape, ensuring a perfect fit in your Harley-Davidson engine.

The piston tops feature a unique, domed design that provides optimal combustion chamber shape for superior engine performance. This design allows for increased compression and improved power output, resulting in a more responsive and exhilarating riding experience. The piston skirts are engineered with a generous crown clearance, providing ample space for the rings to operate effectively and reducing the likelihood of ring wear.

The pistons are also machined with a precise finish, ensuring that they slide smoothly within the cylinder bore. This results in reduced friction, less engine wear, and improved fuel efficiency. The pistons are also coated with a proprietary coating that provides enhanced protection against heat and wear, further extending the life of the pistons.

The KB Performance MN/E4A3 Cast Piston Set comes complete with new piston rings, allowing for a hassle-free installation process. The rings are made from high-quality, chrome molybdenum material, ensuring that they provide excellent sealing and durability. The piston set is also accompanied by detailed installation instructions, making the installation process straightforward and stress-free.

In summary, the KB Performance MN/E4A3 Cast Piston Set for 2001-2006 Harley-Davidson FXSTBI Night Train and Utility models is an exceptional upgrade that delivers enhanced performance, reliability, and durability. With its high-quality materials, precise design, and easy installation process, this piston set is an excellent investment for any Harley-Davidson rider looking to take their riding experience to the next level.

The KB Performance MN/E4A3 Cast Piston Set is a popular upgrade option for Harley-Davidson FXSTBI Night Train models produced between 2001 and 2006. This piston set is designed to provide better performance and durability compared to the stock pistons. In this analysis, we will discuss the pros and cons of purchasing this piston set to help you make an informed decision.

Pros:

1. Enhanced Performance: The KB Performance MN/E4A3 Cast Piston Set is designed to increase horsepower and torque output. This results in improved acceleration and overall riding experience.

2. Durability: These pistons are made from high-quality forged aluminum material, which is stronger and more durable than the stock cast pistons. They can withstand the increased pressure and heat generated during high-performance riding.

3. Increased Compatibility: These pistons are compatible with various Harley-Davidson engines, making them a versatile option for various applications.

4. Improved Engine Look: The polished finish of these pistons adds an aesthetically pleasing look to the engine, making it a popular choice for custom builds.

Cons:

1. Cost: The KB Performance MN/E4A3 Cast Piston Set can be more expensive than stock pistons. However, the performance and durability benefits may justify the additional cost for some riders.

2. Installation: Installing these pistons requires specialized tools and knowledge, which may require the assistance of a professional mechanic.

3. Compatibility Limitations: While these pistons are compatible with various Harley-Davidson engines, they may not be suitable for all models and years. It is essential to ensure compatibility before making a purchase.

Conclusion:

The KB Performance MN/E4A3 Cast Piston Set offers several advantages, including enhanced performance, durability, increased compatibility, and improved engine aesthetics. However, it also comes with some drawbacks, such as cost, installation complexity, and compatibility limitations. Ultimately, the decision to purchase these pistons depends on your budget, riding style, and technical capabilities. If you are looking for improved performance and durability, and are willing to invest in the installation, the KB Performance MN/E4A3 Cast Piston Set could be an excellent choice for your Harley-Davidson FXSTBI Night Train.

Recommendation:

If you are considering purchasing the KB Performance MN/E4A3 Cast Piston Set for your Harley-Davidson FXSTBI Night Train, I would recommend conducting thorough research to ensure compatibility and understanding the installation process. Consulting with a professional mechanic or Harley-Davidson dealership can help you make an informed decision and ensure a successful installation. Additionally, consider the cost-benefit analysis and weigh the performance and durability benefits against the additional cost.

Details:

Domed - Standard Bore 3.875in. KB Cast Piston Set for 2001 - 2006 Harley Davidson FXSTBI Night Train - ut: Status: In Stock. Cast Piston Kit 95ci.

part #: mne4a3 price

  • $314.64

specifications pistondon:

  • for makes: Harley, Davidson
  • for years: 2001-2006
  • brand: Kb Performance
  • mpn: Mn/e4a3
  • type: Cast Piston Sets
  • compatible year: 2006 2005 2004 2003 2002 2001
  • compatible make: Harley Davidson
  • compatible model: Fxstbi Night Train
  • bundle description: 1 Pc Genuine Kb Cast Piston Sets
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

returns pistondon:

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

shipping pistondon:

  • class: Standard
  • service: Standard
  • type: Fixed
  • transit: 5-7 Days
  • cost: $0.00

payments pistondon:

  • other
  • wallet: Google-pay
  • credit card: Discover

offer pistondon:

  • options: Ship-to-home
  • started: November 26, 2025
  • sold: 0
  • quantity: 1
  • availability: In Stock

seller pistondon:

  • # reviews: 14084
  • rating: 98.2%
  • city: Multiple warehouses

general pistondon:

  • Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
  • condition: New
for makes: harley, davidson, for years: 2001-2006, type: cast piston sets, compatible year: 2006 2005 2004 2003 2002 2001, compatible make: harley davidson, compatible model: fxstbi night train, 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: 9068956845513633,

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