1. Pistons, Rings & Piston Kits Products
  2. sku: 9065550259294632
  3. KB PERFORMANCE MN/AYY1

KB PERFORMANCE MN-AYY1 Cast Piston Set Fltc Tour MN/AYY1 For

fits model: Xr, Glide, Classic. make: Harley, Davidson. year: 1984–1991.

Ayy1 Kb Performance Mn/ayy1 Cast Piston Set For 1984-1991 Harley Davidson Fltc Tour Glide Classic - Xr

( Brand: Kb Performance ), ( Manufacturer Part Number: MN/AYY1 ), ( Type: Cast Piston Sets ), ( Compatible Year: 1991 1990 1989 1988 1987 1986 1985 1984 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fltc Tour Glide Classic ), ( Bundle Description: 1 Pc Genuine Kb Cast Piston Sets ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review KB PERFORMANCE Mn/ayy1 Cast Piston Set For Harley Davidson Fltc Tour fits GLIDE CLASSIC XR 1984–1991

Introducing the KB Performance MN/AYY1 Cast Piston Set, specifically designed for Harley-Davidson FLTC Tour Glide Classic XR models produced between 1984 and 1991. This piston set is an exceptional upgrade for your engine, delivering superior performance and reliability.

The KB Performance MN/AYY1 Cast Piston Set is manufactured using high-quality, forged pistons. These pistons are engineered to provide increased strength and durability compared to stock pistons. Each piston features a flat-top design, which allows for a greater compressions ratio, resulting in increased horsepower and torque.

The pistons are also cooled by a full-length, through-boring oil coolant system. This design ensures that the pistons remain cool under heavy loads and high RPMs, preventing thermal stress and extending engine life. Additionally, the pistons are machined to precise tolerances to ensure a proper fit and optimal engine performance.

The piston set includes eight pistons, four rings per piston, and piston pin retainers. Each piston ring is made from high-performance, low-friction material, which reduces wear on the cylinder bore and improves ring seal. The piston pins are made from strong, heat-treated steel and are held in place by retaining clips for added security.

Installation of the KB Performance MN/AYY1 Cast Piston Set is a straightforward process, with no major engine modifications required. The pistons are designed to fit directly into the stock cylinder bore, making this an ideal upgrade for Harley-Davidson riders who are looking for increased power and reliability without the need for extensive engine rebuilds.

In summary, the KB Performance MN/AYY1 Cast Piston Set is a high-performance upgrade for Harley-Davidson FLTC Tour Glide Classic XR models from 1984 to 1991. These pistons deliver increased strength, durability, and power, making them a worthwhile investment for any serious Harley-Davidson enthusiast.

Buying a KB Performance MN/AYY1 cast piston set for a 1984-1991 Harley-Davidson FLTC Tour Glide Classic XR can be a significant investment in your motorcycle. Here are some potential pros and cons to consider before making a decision.

Pros:

1. Improved Performance: The KB Performance pistons are designed to provide better compression and increased power output, which can lead to improved engine performance and a more enjoyable riding experience.

2. Durability: The cast pistons are known for their durability and strength, making them a good choice for high-performance applications and heavy usage.

3. Enhanced Appearance: The new pistons can give your engine a fresh look, especially if you are replacing worn or damaged pistons.

Cons:

1. Cost: The KB Performance pistons can be quite expensive, especially compared to OEM pistons. The cost may be a significant consideration for some riders.

2. Installation: Installing the new pistons requires a significant amount of time and expertise. It's important to ensure that the installation is done correctly to avoid any potential issues.

3. Potential Compatibility Issues: Some riders have reported compatibility issues with the KB Performance pistons, particularly with regards to clearances and fitment. It's important to ensure that the pistons are compatible with your specific engine configuration.

Conclusion:

The decision to buy a KB Performance MN/AYY1 cast piston set for a 1984-1991 Harley-Davidson FLTC Tour Glide Classic XR ultimately depends on your individual needs and priorities. If you are looking for improved performance and durability, and you have the budget and expertise to install the new pistons, then this may be a worthwhile investment. However, if the cost is a concern or you are unsure about the compatibility or installation process, it may be worth considering other options.

Recommendation:

Before making a decision, it's important to do your research and consult with a qualified mechanic or Harley-Davidson dealer to ensure that the KB Performance pistons are the right choice for your motorcycle and riding style. Additionally, consider the cost of the pistons, as well as the cost of installation and any potential compatibility issues, to determine if this is an investment that makes sense for you.

Details:

KB Cast Piston Set for 1984 - 1991 Harley Davidson FLTC Tour Glide Classic - Xr: Status: In Stock. Domed - Standard Bore 3.498in. Cast Piston Kit 80ci.

part #: mnayy1 price

  • $243.39

specifications pistondon:

  • for models: Xr, Glide, Classic
  • for makes: Harley, Davidson
  • for years: 1984-1991
  • brand: Kb Performance
  • mpn: Mn/ayy1
  • type: Cast Piston Sets
  • compatible year: 1991 1990 1989 1988 1987 1986 1985 1984
  • compatible make: Harley Davidson
  • compatible model: Fltc Tour Glide Classic
  • bundle description: 1 Pc Genuine Kb Cast Piston Sets
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

returns pistondon:

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

offer pistondon:

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

payments pistondon:

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  • credit card: Diners-club

shipping pistondon:

  • service: Standard
  • class: Standard
  • cost: $0.00
  • transit: 3-7 Days
  • type: Fixed

general pistondon:

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

seller pistondon:

  • # reviews: 14078
  • city: Multiple warehouses
  • rating: 98.2%
for models: xr, glide, classic, for makes: harley, davidson, for years: 1984-1991, type: cast piston sets, compatible year: 1991 1990 1989 1988 1987 1986 1985 1984, compatible make: harley davidson, compatible model: fltc tour glide classic, 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: 9065550259294632,

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