1. Pistons, Rings & Piston Kits Products
  2. sku: 7827859287581713
  3. KB PERFORMANCE MN/0Z89

KB PERFORMANCE MN-0Z89 Cast Piston Set Zu MN/0Z89 For

fits model: Flst, Heritage, Softail. make: Harley, Davidson. year: 1986–1990.

0z89 Kb Performance Mn/0z89 Cast Piston Set For 1986-1990 Harley Davidson Flst Heritage Softail - Zu

( Brand: Kb Performance ), ( Manufacturer Part Number: MN/0Z89 ), ( Type: Cast Piston Sets ), ( Compatible Year: 1990 1989 1988 1987 1986 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Flst Heritage Softail ), ( Bundle Description: 1 Pc Genuine Kb Cast Piston Sets ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review KB PERFORMANCE Mn/0z89 Cast Piston Set For Harley Davidson Zu fits HERITAGE SOFTAIL FLST 1986–1990

Introducing the KB Performance MN/0Z89 Cast Piston Set, specifically designed for Harley-Davidson FLST Heritage Softail models manufactured between 1986 and 1990. This top-tier piston set is an essential upgrade for riders seeking improved engine performance and longevity.

Crafted from premium forged aluminum alloy, these pistons boast superior strength and durability compared to their stock counterparts. Each piston is meticulously machined to ensure a perfect fit and finish. The piston crowns are optimally domed to provide maximum combustion efficiency, while the undersides feature a precise skirt design to minimize friction and enhance power transfer.

The KB Performance MN/0Z89 Cast Piston Set comes with matching forged connecting rods that are engineered to work in harmony with the new pistons. These rods are designed to withstand the increased stresses of high-performance applications, ensuring a balanced and reliable power output.

Each piston kit includes new piston rings and ring grooves, ensuring a proper seal and optimal compression. The rings are made of high-quality materials that resist wear and tear, contributing to the longevity of the engine.

The KB Performance MN/0Z89 Cast Piston Set is an ideal upgrade for Harley-Davidson enthusiasts who demand the best from their motorcycle. These pistons offer increased horsepower, torque, and engine longevity, transforming the riding experience for those who crave more power and performance from their Heritage Softail.

In summary, the KB Performance MN/0Z89 Cast Piston Set is a premium upgrade for Harley-Davidson FLST Heritage Softail models from 1986 to 1990. These pistons are meticulously crafted from forged aluminum alloy, feature optimally domed crowns, and come with matching forged connecting rods and new piston rings. This piston set delivers increased horsepower, torque, and engine longevity, making it an essential investment for serious Harley-Davidson enthusiasts.

Buying a KB Performance MN/0Z89 cast piston set for a 1986-1990 Harley-Davidson FLST Heritage Softail can be a consideration for those looking to improve the performance of their motorcycle. Here are some pros and cons to help you make an informed decision.

Pros:

1. Enhanced Performance: The KB Performance pistons are designed to provide better compression ratio and increased power output, resulting in improved engine performance.

2. Durability: Cast pistons are known for their durability as they can withstand high temperatures and pressures better than forged pistons.

3. OEM Replacement: These pistons are a direct replacement for the OEM pistons, making the installation process easier and more straightforward.

Cons:

1. Cost: Cast pistons tend to be more expensive than forged pistons, and this set may be pricier than some other options in the market.

2. Limited Warranty: KB Performance offers a limited warranty on their piston sets, which may not cover all potential issues or failures.

3. Potential Clearance Issues: Depending on the specific application, there may be clearance issues between the piston and other components in the engine, requiring additional modifications or adjustments.

Conclusion:

The KB Performance MN/0Z89 cast piston set for a 1986-1990 Harley-Davidson FLST Heritage Softail can offer improved performance and durability, making it an attractive option for those looking to enhance their motorcycle's power output. However, it comes with a higher cost and potential clearance issues, which need to be considered before making a purchase.

Recommendation:

If you are comfortable with the potential costs and clearance issues, the KB Performance MN/0Z89 cast piston set can be a worthwhile investment for those seeking improved performance and durability for their Harley-Davidson FLST Heritage Softail. However, it is essential to ensure that the installation process is carried out by a qualified professional to minimize any potential complications. Additionally, it may be prudent to explore other options, such as forged pistons or performance kits, and compare their pros and cons before making a final decision.

Details:

KB Cast Piston Set for 1986 - 1990 Harley Davidson FLST Heritage Softail - zu: Status: In Stock. Domed - Standard Bore 3.498in. Cast Piston Kit 80ci.

part #: mn0z89 prices

  • $231.63-$300.79

specifications pistondon:

  • for models: Flst, Heritage, Softail
  • for makes: Harley, Davidson
  • for years: 1986-1990
  • brand: Kb Performance
  • mpn: Mn/0z89
  • type: Cast Piston Sets
  • compatible year: 1990 1989 1988 1987 1986
  • compatible make: Harley Davidson
  • compatible model: Flst Heritage Softail
  • bundle description: 1 Pc Genuine Kb Cast Piston Sets
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

payments pistondon:

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

general pistondon:

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

seller pistondon:

  • rating: 96.5%
  • # reviews: 9588
  • city: Multiple warehouses

offer pistondon:

  • availability: In Stock
  • started: August 17, 2025
  • sold: 0
  • quantity: 1
  • options: Ship-to-home

returns pistondon:

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

shipping pistondon:

  • type: Fixed
  • transit: 4-6 Days
  • service: Standard
  • class: Standard
  • cost: $0.00
for models: flst, heritage, softail, for makes: harley, davidson, for years: 1986-1990, type: cast piston sets, compatible year: 1990 1989 1988 1987 1986, compatible make: harley davidson, compatible model: flst heritage 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: 7827859287581713,

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