1. Pistons, Rings & Piston Kits Products
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  3. HASTINGS DS-750642

HASTINGS DS-750642 Piston Rings Overbore Evolution .020

fits model: Evo. make: Harley, Davidson. year: 1980.

Ds-750642 Hastings Piston Rings .020 Overbore Harley Davidson 80 Inch Evolution Evo

( Brand: Hastings ), ( Manufacturer Part Number: DS-750642 ), ( Engine Type: 4-stroke ), ( Type: Piston Ring Set ), ( Machine Type: Street Motorcycle ), ( Manufacturer Warranty: 1 Year ), ( Oe/oem Part Number: Hastings Evolution Evo Ds-750642 ), ( Items Included: Piston Rings )

Review HASTINGS Piston Rings .020 Overbore Harley Davidson Inch Evolution fits EVO 1980

The Hastings DS-750642 piston rings are specifically designed for Harley-Davidson 80 Evolution Evo engines with an overbore requirement. These piston rings are engineered to provide superior performance and durability to meet the demands of your Harley-Davidson motorcycle.

The piston rings in this set are 020 overbore, meaning they have an outer diameter that is 0.20 inches larger than the standard piston rings. This overbore design allows for a larger piston to be used, increasing the engine's displacement and delivering more power.

The top ring in this set is a compression ring, which seals the combustion chamber and helps maintain compression during the power stroke. The second ring is an oil control ring, which prevents oil from leaking past the piston and ensures efficient lubrication. The third ring is a scraper ring, which scrapes the excess carbon build-up off the piston skirt during each compression stroke.

Each piston ring is made from high-quality materials, including a nitrided surface treatment for increased durability and longer ring life. The rings are also precision machined to ensure a perfect fit and optimal performance.

Installing these piston rings requires some mechanical knowledge and experience, as well as specialized tools. It is recommended to have the installation performed by a professional mechanic to ensure proper installation and to avoid any potential damage to your engine.

In summary, the Hastings DS-750642 piston rings are a high-performance solution for Harley-Davidson 80 Evolution Evo engines requiring an overbore. With their superior quality materials, precise machining, and engineered design, these piston rings will provide improved power, efficiency, and longevity for your motorcycle.

Hastings DS-750642 Piston Rings for Harley-Davidson 80 Evolution Evo: A Comprehensive Analysis

Introduction:

The Hastings DS-750642 piston rings are aftermarket piston rings designed for use in Harley-Davidson 80 Evolution Evo engines. These rings are marketed as an overbore solution, meaning they are intended for use after an engine has been enlarged. In this analysis, we will discuss the potential advantages and disadvantages of purchasing these piston rings.

Advantages:

1. Cost-Effective: Aftermarket piston rings like the Hastings DS-750642 can be more affordable compared to OEM (Original Equipment Manufacturer) options. This may be a significant consideration for some Harley-Davidson owners, especially those with larger engines.

2. Custom Fit: Aftermarket piston rings, such as the Hastings DS-750642, are specifically designed for use in Harley-Davidson 80 Evolution Evo engines. This ensures a precise fit, which can lead to improved engine performance and reduced wear and tear.

3. Enhanced Performance: The Hastings DS-750642 piston rings may offer enhanced performance compared to OEM rings. This could include improved sealing, reduced friction, and increased durability.

Disadvantages:

1. Quality Concerns: Some aftermarket piston rings may not meet the same quality standards as OEM parts. This could lead to issues such as poor sealing, increased wear, or even engine damage.

2. Installation Challenges: Installing aftermarket piston rings can be more complex than installing OEM parts. This may require additional time, tools, and expertise, which could add to the overall cost.

3. Warranty: Aftermarket parts like the Hastings DS-750642 piston rings may not come with the same level of warranty coverage as OEM parts. This could leave the purchaser without recourse if the rings fail prematurely.

Conclusion:

The Hastings DS-750642 piston rings offer several advantages, including cost savings, a custom fit, and potential performance enhancements. However, these advantages come with potential disadvantages, such as quality concerns, installation challenges, and limited warranty coverage. Ultimately, the decision to purchase these aftermarket piston rings depends on the individual Harley-Davidson owner's priorities, budget, and level of expertise.

Recommendation:

If you are a confident DIYer with a good understanding of engine mechanics and the resources to ensure a precise installation, the Hastings DS-750642 piston rings could be a cost-effective solution for your Harley-Davidson 80 Evolution Evo engine. However, if you prefer the peace of mind that comes with OEM parts, or if you lack the necessary expertise, it may be worth investing in the more expensive but potentially safer option.

Details:

This set is for a .020 overbore application. Distributed by Drag Specialties. Proudly made in the USA. Includes rings for two pistons: 2 Top Compression Rings, Second Spacer rings, 4 Oil These replacement feature a barrel-faced, Molly-filled top ring long life and scuff-free service, along with reverse torsion second.

Shipping: Ships via USPS. New Old Stock NOS, Hastings piston ring set for Harley-Davidson 80-cubic inch Evolution engines. Brand: Hastings / Drag Specialties, Manufacturer Part Number: DS-750642 VN-P# 6164020, Type: Piston Ring Set, Size: .020 inches Overbore, Bore Diameter: 3.498 88.851mm , Material: Cast, Compatible Make: Harley-Davidson, Engine: 1340cc 80 Evolution Big Twin, Country/Region of Manufacture: USA, Number Cylinders: 2 This set is for.

part #: ds750642 price

  • $46.04

specifications pistondon:

  • for models: Evo
  • for makes: Harley, Davidson
  • for years: 1980
  • brand: Hastings
  • mpn: Ds-750642
  • engine type: 4-stroke
  • type: Piston Ring Set
  • machine type: Street Motorcycle
  • manufacturer warranty: 1 Year
  • oe/oem part number: Hastings Evolution Evo Ds-750642
  • items included: Piston Rings

offer pistondon:

  • best offers: True
  • availability: In Stock
  • options: Ship-to-home
  • started: February 2, 2026
  • quantity: 1
  • sold: 0

seller pistondon:

  • rating: 100.0%
  • # reviews: 37
  • city: San Antonio, Texas

shipping pistondon:

  • cost: $0.00
  • type: Calculated
  • service: USPS Ground Advantage
  • class: Standard
  • carrier: USPS
  • transit: 4-10 Days

returns pistondon:

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

general pistondon:

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

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for models: evo, for makes: harley, davidson, for years: 1980, engine type: 4-stroke, type: piston ring set, machine type: street motorcycle, manufacturer warranty: 1 year, oe/oem part number: hastings evolution evo ds-750642, items included: piston rings,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 10362307413700731,

Hastings DS-750642 Is Similar To:

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1 offer $46.04 USD
  • Offer #1: $46.04 price + $0.00 shipping estimate = $46.04* total. Ring sets include cast iron compression rings and three piece flex-vent oil rings, except for early 1200cc, which is a one-piece cast iron oil ring. Late 1340cc Evolution Fits L84-99 Evolution Big Twin.FREE SHIPPING

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