1. Pistons, Rings & Piston Kits Products
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  3. KB PERFORMANCE KB542LCA.STD

KB PERFORMANCE KB542LCA.STD Forged Piston Kit Bored 800745256744 120CI.-BORED

fits model: Std.

120ci.-bored Kb Performance 800745256744 Kb542lca.std Super-duty Forged Piston Kit

( Brand: Kb Performance ), ( Manufacturer Part Number: KB542LCA.STD ), ( Part Type: Piston ), ( UPC: 800745256744 )

Review KB PERFORMANCE Super duty Forged Piston Kit fits STD

Introducing the KB Performance 800745256744 KB542LCA.STD Super-Duty Forged Piston Kit, specifically designed for engines with a 120ci. bore. This high-performance piston kit is engineered to deliver exceptional strength, durability, and power for your engine.

Each forged piston in this kit is meticulously crafted from 2618-T6 aluminum alloy. The forging process ensures that the pistons have a strong, uniform structure, reducing the likelihood of failure under extreme conditions. The pistons also feature a unique, full-dish design that increases combustion efficiency and power output.

The piston tops are machined to precise specifications, ensuring a perfect fit and optimal performance. The piston skirts are designed with a generous crown clearance, allowing for increased compression and improved engine breathing. The pistons also feature a low-friction coating on the piston skirt and rings, reducing friction and wear for longer engine life.

The piston pins are made of high-strength steel and are precision-machined to fit snugly in the piston. The piston pin bore is chamfered for easy installation, and the pins are also coated with a low-friction material for reduced wear and longer pin life.

The piston kit also includes new piston rings, made from high-quality, low-friction materials. The rings are designed to seal tightly against the cylinder wall, reducing blow-by and improving engine efficiency. The rings are also coated with a molybdenum disulfide (Moly) coating for improved ring-to-block contact and longer ring life.

This KB Performance Super-Duty Forged Piston Kit is an excellent choice for high-performance applications, such as racing, hot rodding, or high-output diesel engines. It is designed to provide superior strength, durability, and power gain, making it an ideal upgrade for any serious engine builder or performance enthusiast. With its high-quality materials, precise machining, and exceptional design, this piston kit is sure to exceed your expectations and deliver the performance you have been looking for.

Buying KB Performance Super-Duty Forged Piston Kit (KB542LCA.STD) for 120ci.-bored Engines: A Detailed Analysis

Introduction:

The KB Performance Super-Duty Forged Piston Kit (KB542LCA.STD) is a popular aftermarket upgrade for 120ci.-bored engines. This kit is known for its high-performance capabilities and durability. In this analysis, we will discuss the pros and cons of this purchase to help you make an informed decision.

Pros:

1. Enhanced Performance: Forged pistons offer increased strength and durability compared to their cast counterparts. This leads to improved performance, including increased horsepower and torque.

2. Improved Engine Longevity: Forged pistons are less prone to failure due to their superior material and manufacturing process. This results in an engine that can withstand higher loads and last longer.

3. Customizability: This piston kit is available in various sizes to cater to different engine displacements. This allows you to choose the perfect fit for your specific engine.

4. High-Quality Material: The pistons are made from high-quality forged aluminum alloy, ensuring superior strength and thermal conductivity.

5. Enhanced Appearance: Forged pistons have a unique appearance compared to cast pistons. The smooth, polished surface and lack of porosity make for an attractive engine component.

Cons:

1. Cost: Forged piston kits are more expensive than their cast counterparts. This can be a significant investment for some engine builders.

2. Complex Installation: Installing forged pistons requires a high level of expertise and precise measurements. This can add to the overall cost and time of the project.

3. Potential Clearance Issues: Depending on the engine configuration, there may be clearance issues between the pistons and other engine components. This can lead to additional modifications or custom work.

4. Weight: Forged pistons are denser and heavier than cast pistons. This can affect the overall balance and performance of the engine.

Ending Conclusion:

The KB Performance Super-Duty Forged Piston Kit (KB542LCA.STD) offers numerous benefits for those looking to upgrade their 120ci.-bored engines. These benefits include enhanced performance, improved engine longevity, customizability, high-quality material, and an enhanced appearance. However, the significant investment required, complex installation, potential clearance issues, and added weight are important factors to consider before making a purchase.

Recommendation:

If you are an engine builder looking to maximize performance and durability, and you have the necessary expertise and budget, then the KB Performance Super-Duty Forged Piston Kit (KB542LCA.STD) is an excellent choice. However, if you are just starting out or have limited resources, you may want to consider other, more cost-effective options. Always ensure that you properly research and consider all factors before making a purchase.

Details:

KB Performance KB542LCA.STD Super-Duty Forged Piston Kit 120ci.-Bored 4.125in.-11.0:1 Comp: New skirt coating technology is applied to the entire thickness of piston-to-wall clearance for a zero install clearance; then abrades in on start-up hone perfect fit per cylinder, Skirt eliminates piston rock best possible ring seal with no slap noise, Hard anodized crown aid heat deflection and reduce corrosion from alcohol fuels, top groove micro welding groove; this maintains flat smooth surface groove, Includes piston, rings, pins clips, Made USA. I need to exchange an item.: Brand: KB Performance, model Number: KB542LCA.STD. Compatibility: Years: Make: model: Notes: 2019 - 2020 Harley Road King Special, Teri Glide Ultra, 2018 2019 Harley CVO Glide, 2020 Ultra Limited Low, Fat Boy 114, Heritage Classic Limited, 2017 Low Riders Street FXDR Bob Freewheeled, Breakout 114.

Parts without fitment are to be assumed universal and may require vehicle modification. This is helpful if you are buying multiple items.

part #: kb542lcastd prices

  • $404.95-$449.95

specifications pistondon:

  • for models: Std
  • brand: Kb Performance
  • mpn: Kb542lca.std
  • part type: Piston
  • upc: 800745256744

general pistondon:

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

shipping pistondon:

  • transit: 2-5 Days
  • cost: $0.00
  • type: Fixed
  • class: Standard
  • service: Standard

returns pistondon:

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

offer pistondon:

  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • started: July 30, 2025
  • quantity: 3

seller pistondon:

  • rating: 99.5%
  • city: Sparks, NV
  • # reviews: 64515

payments pistondon:

  • other
  • credit card: Visa
  • wallet: Google-pay
for models: std, part type: piston,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 7585750933446502,

Kb Performance KB542LCA.STD Is Similar To:

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5 offers $404.95–$449.95 USD
  • Offer #1: $404.95 price + $0.00 shipping estimate = $404.95* total. Compression Ratio Imperial : 11.0:1. Piston Material : Aluminum.FREE SHIPPING
  • Offer #2: $421.81 price + $0.00 shipping estimate = $421.81* total. PRODUCT TYPEPiston Kits & Components. Super-Duty Series Pistons.FREE SHIPPING
  • Offer #3: $449.95 price + $0.00 shipping estimate = $449.95* total. 2018-2020 Harley-Davidson Softail Fat Bob 114 FXFBS. M8 version with flat top 1.2cc with compression height 1.083", valve pockets sized to accommodate 1mm oversize valves.FREE SHIPPING
  • Offer #4: $422.79 price + $0.00 shipping estimate = $422.79* total. 003" total thickness for a ZERO initial fit to allow coating to hone in for a tight quiet running clearance. Line2Line abradable skirt coating applied to.FREE SHIPPING
  • Offer #5: $444.35 price + $12.99 shipping estimate = $457.34* total. No other parts are included or can be substituted, selected, or changed. The kit features an anodized top ring groove and crown, ensuring durability and corrosion resistance for demanding riding conditions.+$12.99 shipping

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