1. Pistons, Rings & Piston Kits Products
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  3. HASTINGS MN/F234

HASTINGS MN-F234 Moly Ring Set Rider Kf MN/F234

fits model: F234, Fxrs. make: Harley, Davidson. year: 1990–1993.

Hastings Mn/f234 Moly Ring Set For 1990-1993 Harley Davidson Fxrs-conv Low Rider Kf

( Brand: Hastings ), ( Manufacturer Part Number: MN/F234 ), ( Type: Moly Ring Set ), ( Compatible Year: 1993 1992 1991 1990 ), ( Compatible Make: Harley Davidson ), ( Compatible Model: Fxrs-conv Low Rider Sport Convertible ), ( Bundle Description: 1 Pc Genuine Hastings Moly Ring Set ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review HASTINGS Mn/f234 Moly Ring Set For Harley Davidson Fxrs conv Low Rider Kf fits F234 FXRS 1990–1993

Introducing the Hastings Performance Products Moly Ring Set (MN/F234) specifically designed for Harley-Davidson FXRS-D Model motorcycles manufactured between 1990 and 1993. This set is suitable for riders who value exceptional engine performance and durability.

The Moly Ring Set includes four high-quality molybdenum-coated piston rings that are meticulously crafted to enhance your motorcycle's engine efficiency. Molybdenum is a crucial element that improves ring performance by reducing friction between the piston and cylinder walls. As a result, these rings provide improved sealing, reduced engine wear, and increased horsepower.

This ring set is engineered to fit Harley-Davidson FXRS-D engines with a bore size of 3.5 inches and a stroke length of 3.312 inches. The exacting precision of the manufacturing process ensures a perfect fit, eliminating the need for extensive engine modification.

Each ring in the set is designed with a specific function in mind. The top ring provides a tight seal against the cylinder head, preventing combustion gases from escaping. The second ring, or the compression ring, is responsible for maintaining compression within the engine. The third ring, or the oil control ring, is responsible for controlling oil flow between the piston and cylinder walls, ensuring proper lubrication and reducing engine wear. Lastly, the bottom ring, or the skirt ring, is designed to seal the piston to the cylinder wall and prevent oil from entering the combustion chamber.

The Hastings Performance Products Moly Ring Set (MN/F234) is an excellent investment for riders seeking to improve their motorcycle's performance, reliability, and longevity. With its precise fit, exceptional quality, and proven performance benefits, this ring set is a must-have for any serious Harley-Davidson FXRS-D rider.

The Hastings Moly Ring Set for 1990-1993 Harley Davidson FXRS-D/F models is a popular aftermarket upgrade for those looking to improve their engine's performance and longevity. Here are some pros and cons to consider before making a purchase:

Pros:

1. Enhanced Engine Performance: Molybdenum disulfide (Moly) rings help reduce friction between the piston rings and cylinder wall, allowing for smoother engine operation and improved horsepower.

2. Increased Engine Longevity: Moly rings can help reduce engine wear and tear, extending the life of the engine.

3. Better Sealing: Moly rings provide a better seal between the piston and cylinder wall, reducing the amount of oil consumed and preventing blowby.

4. Improved Fuel Economy: By reducing friction and improving sealing, moly rings can help improve fuel economy.

Cons:

1. Cost: Moly ring sets can be more expensive than standard piston rings.

2. Installation: Installing moly rings requires specialized tools and knowledge, making it a more involved process than installing standard rings.

3. Potential for Ring Damage: Moly rings are more brittle than standard rings, making them more susceptible to damage during installation.

4. Potential for Oil Consumption: Some riders have reported increased oil consumption after installing moly rings.

Conclusion:

The Hastings Moly Ring Set can provide significant performance and longevity benefits for Harley Davidson FXRS-D/F models from 1990-1993. However, the higher cost, installation complexity, and potential for ring damage and increased oil consumption are important considerations. Ultimately, the decision to purchase a moly ring set depends on your personal riding style, budget, and comfort level with DIY installation or working with a professional mechanic.

Recommendation:

If you're an aggressive rider, or if you've experienced engine wear or performance issues with your Harley Davidson, a moly ring set may be worth the investment. However, if you're on a tight budget or prefer a more straightforward installation process, standard piston rings may be a better choice. It's always a good idea to consult with a Harley Davidson mechanic or performance specialist to get their professional opinion.

Details:

Moly Ring Set 1340cc - .040in. Hastings Moly Ring Set for 1990 - 1993 Harley Davidson FXRS-Conv Low Rider kf: Status: In Stock.

part #: mnf234 price

  • $95.24

specifications pistondon:

  • for models: F234, Fxrs
  • for makes: Harley, Davidson
  • for years: 1990-1993
  • brand: Hastings
  • mpn: Mn/f234
  • type: Moly Ring Set
  • compatible year: 1993 1992 1991 1990
  • compatible make: Harley Davidson
  • compatible model: Fxrs-conv Low Rider Sport Convertible
  • bundle description: 1 Pc Genuine Hastings Moly Ring Set
  • core charge: Free No Core Charge
  • fitment type: Direct Replacement

general pistondon:

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

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offer pistondon:

  • started: February 23, 2026
  • quantity: 1
  • availability: In Stock
  • sold: 0
  • options: Ship-to-home

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shipping pistondon:

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for models: f234, fxrs, for makes: harley, davidson, for years: 1990-1993, type: moly ring set, compatible year: 1993 1992 1991 1990, compatible make: harley davidson, compatible model: fxrs-conv low rider sport convertible, bundle description: 1 pc genuine hastings moly ring set, 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: 10804819161844633,

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