1. Pistons, Rings & Piston Kits Products
  2. sku: 7257055339060713
  3. KB PERFORMANCE MN/5019

KB PERFORMANCE MN-5019 Cast Piston Set Fxef Engine Ka MN/5019 For

fits model: Fat, Bob. make: Harley, Davidson. year: 1985.

5019 Kb Performance Mn/5019 Cast Piston Set For 1985 Harley Davidson Fxef Fat Bob - Engine Pistons Ka

( Brand: Kb Performance ), ( Manufacturer Part Number: MN/5019 ), ( Type: Cast Piston Sets ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxef Fat Bob ), ( Bundle Description: 1 Pc Genuine Kb Cast Piston Sets ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review KB PERFORMANCE Mn/5019 Cast Piston Set For Harley Davidson Fxef Engine Pistons Ka fits FAT BOB 1985

Introducing the KB Performance MN/5019 Cast Piston Set, specifically designed for Harley-Davidson FXEF Fat Bob engines manufactured in 1985. This top-tier piston set is an excellent upgrade for your engine, delivering enhanced performance and reliability.

Crafted from premium cast aluminum alloy, these pistons boast a superior strength-to-weight ratio, ensuring they can handle the rigors of high-performance riding. The piston skirts are designed with a counter-boring that reduces friction and improves ring sealing, resulting in better compression and power.

The KB Performance piston set includes piston pins made from heat-treated steel, ensuring they can withstand the extreme temperatures and pressures generated during engine operation. The piston rings are manufactured from chrome nitride-coated iron, providing superior wear resistance and a longer service life.

Each piston is meticulously machined to ensure a perfect fit within the engine cylinders. The piston crowns are designed with a domed shape, which aids in efficient combustion and increased power output. The piston rings are also precisely sized and installed to ensure a proper fit and optimal seal.

This piston set is an excellent choice for Harley-Davidson enthusiasts seeking to boost the performance of their FXEF Fat Bob engine while maintaining the highest standards of quality and durability. With the KB Performance MN/5019 Cast Piston Set, riders can expect improved power delivery, increased engine efficiency, and the peace of mind that comes with using a trusted aftermarket performance brand.

Buying the KB Performance MN/5019 cast piston set for a 1985 Harley-Davidson FXEF Fat Bob engine comes with both advantages and disadvantages. Let's examine each:

Advantages:

1. Enhanced Performance: The KB Performance pistons are designed to provide increased power and torque, making your Fat Bob engine more responsive and powerful.

2. High-Quality Material: These pistons are made from high-quality forged aluminum alloy, ensuring durability and strength.

3. Improved Engine Efficiency: The new pistons can help improve engine efficiency, leading to better fuel economy and reduced emissions.

4. Customizable: KB Performance offers various piston designs to suit different riding styles and engine modifications, allowing you to tailor the performance of your Fat Bob to your specific needs.

Disadvantages:

1. Cost: Compared to OEM pistons, aftermarket pistons like the KB Performance MN/5019 set can be more expensive.

2. Installation Complexity: Installing aftermarket pistons requires specialized knowledge and tools, and the process can be time-consuming and potentially expensive if done by a professional.

3. Potential Compatibility Issues: Ensure that the pistons are compatible with your specific engine configuration, as using incompatible parts could lead to engine damage.

Conclusion:

The KB Performance MN/5019 cast piston set for the 1985 Harley-Davidson FXEF Fat Bob engine offers significant performance improvements, enhanced durability, and customizability. However, it comes with a higher cost, installation complexity, and potential compatibility issues. Ultimately, the decision to purchase these pistons depends on your priorities, budget, and technical expertise.

Recommendation:

If you're looking for increased power and performance from your Fat Bob engine and are comfortable with the installation process and potential costs, the KB Performance MN/5019 cast piston set could be an excellent investment. However, if you're on a tight budget or prefer a more straightforward upgrade, consider other performance modifications or opt for OEM pistons. Always ensure that you purchase the correct pistons for your engine configuration to avoid potential compatibility issues.

Details:

KB Cast Piston Set for 1985 Harley Davidson FXEF Fat Bob - Engine Pistons ka: Status: In Stock. Oversize to 3.518in. Flat Top - .020in. Cast Piston Kit 80ci.

part #: mn5019 prices

  • $137.49-$231.63

specifications pistondon:

  • for models: Fat, Bob
  • for makes: Harley, Davidson
  • for years: 1985
  • brand: Kb Performance
  • mpn: Mn/5019
  • type: Cast Piston Sets
  • compatible make: Harley Davidson
  • compatible model: Fxef Fat Bob
  • bundle description: 1 Pc Genuine Kb Cast Piston Sets
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

seller pistondon:

  • # reviews: 9173
  • rating: 96.8%
  • city: Multiple warehouses

offer pistondon:

  • started: July 6, 2025
  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0

shipping pistondon:

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

returns pistondon:

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

general pistondon:

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

payments pistondon:

  • credit card: Mastercard
  • wallet: Google-pay
  • other
for models: fat, bob, for makes: harley, davidson, for years: 1985, type: cast piston sets, compatible make: harley davidson, compatible model: fxef fat bob, 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: 7257055339060713,

Kb Performance MN-5019 Is Similar To:

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2 offers $137.49–$231.63 USD
  • Offer #1: $231.63 price + $0.00 shipping estimate = $231.63* total. Cast Piston Kit (80ci., Flat Top) - .020in.FREE SHIPPING
  • Offer #2: $137.49 price + $200.00 shipping estimate = $337.49* total. Donor vehicle: 2019 FORD ESCAPE SE 1.5L 4WD AUTOMATIC TRANSMISSION.+$200.00 shipping

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