1. Pistons, Rings & Piston Kits Products
  2. sku: 7474639241207611
  3. HARLEY DAVIDSON 21951-11

HARLEY-DAVIDSON 21951-11 Piston Ring T2DW1

fits model: Std. make: Harley.

21951-11 Harley-davidson Piston Ring Std T2dw1

( Brand: Harley-davidson ), ( Manufacturer Part Number: 21951-11 ), ( Type: Piston Ring ), ( Country/region Of Manufacture: United States )

Review HARLEY DAVIDSON Piston Ring fits STD

The Harley-Davidson 21951-11 piston ring is a standard t2dw1 ring designed specifically for Harley-Davidson V-Twin engines. This piston ring is critical in ensuring the proper functioning of the engine by sealing the gap between the piston and the cylinder wall, preventing the combustion gases from leaking into the crankcase.

The ring is made of a durable and heat-resistant material, such as cast iron or steel, with a chrome or nickel plating for added protection against corrosion and wear. The ring's cross-section is designed to provide a snug fit against the cylinder wall while allowing for minimal clearance between the piston and the ring.

This piston ring features a two-piece design, which allows for easier installation and removal. It consists of a compression ring and an oil control ring. The compression ring is responsible for sealing the combustion gases and transmitting the engine's power to the crankshaft. The oil control ring, on the other hand, helps in controlling the oil consumption by preventing oil from leaking past the piston.

The Harley-Davidson 21951-11 piston ring is designed to meet the specific requirements of Harley-Davidson engines, ensuring optimal engine performance and longevity. It is important to note that using the incorrect piston ring for your engine can lead to various issues, such as engine misfires, oil consumption, and even engine damage.

When installing the piston ring, it is recommended to follow the manufacturer's instructions carefully to ensure proper installation and to avoid damaging the ring or the cylinder wall. Regular maintenance, including regular oil changes and engine checks, can help ensure the longevity of the piston ring and the overall performance of the engine.

Pros and Cons of Buying Harley-Davidson 21951-11 Piston Rings

1. Pros:

a. Original Equipment: These piston rings are original equipment from Harley-Davidson, ensuring a perfect fit and compatibility with the engine.

b. Quality and Durability: Harley-Davidson is known for its high-quality products, and these piston rings are no exception. They are designed to withstand the extreme conditions of a motorcycle engine and provide excellent sealing.

c. Improved Performance: Upgrading to new piston rings can improve engine performance by reducing compression loss, improving combustion efficiency, and reducing engine wear.

d. Peace of Mind: Buying original equipment from the manufacturer can provide peace of mind, knowing that the parts are backed by the manufacturer's warranty and support.

2. Cons:

a. Cost: Original equipment piston rings can be more expensive than aftermarket alternatives. However, the cost may be justified by the quality, fit, and performance benefits.

b. Availability: Depending on the specific model and year of the Harley-Davidson motorcycle, these piston rings may not be readily available at local dealerships or retailers. Ordering online may be necessary.

c. Installation: Installing piston rings can be a complex and time-consuming process that requires specialized tools and skills. It may be necessary to hire a professional mechanic or engine builder to ensure the rings are installed correctly.

Conclusion:

The Harley-Davidson 21951-11 piston rings offer several advantages, including original equipment quality, improved performance, and peace of mind. However, they come with a higher cost and potential availability issues. Ultimately, the decision to purchase these piston rings depends on the specific needs and budget of the Harley-Davidson motorcycle owner. If performance and compatibility are top priorities, then original equipment piston rings may be the best choice. If cost is a concern, then aftermarket alternatives may be worth considering.

Recommendation:

For Harley-Davidson motorcycle owners who prioritize performance, compatibility, and peace of mind, we recommend purchasing the Harley-Davidson 21951-11 piston rings. For those who are budget-conscious, we suggest exploring aftermarket alternatives while ensuring they are compatible with the specific Harley-Davidson engine model and year. Regardless of the choice, it is important to ensure that the piston rings are installed correctly to maximize their benefits and avoid potential engine damage.

Details:

It may have shelf wear or tears. We often provide fitment data on our listings. Item only comes with what is shown.

Every effort has been made to accurately describe all merchandise offered. Harley-Davidson 21951-11 Piston Ring, STD T2DW1. The item may be new but missing a box, or bushing, it have scratch, etc. This only applies to listings that are sold as New Other.

Thank you for looking at our item. Economy Shipping is typically mailed by cheapest method. Sometimes there are errors in this data, please understand that accidents happen but we'll try and fix the problem if fault lies on our end. The number at the end of is location on our shelves ex: G3DA.

Original packaging may be distressed or missing.

part #: 2195111 price

  • $84.70

specifications pistondon:

  • for models: Std
  • for makes: Harley
  • brand: Harley-davidson
  • mpn: 21951-11
  • type: Piston Ring
  • country/region of manufacture: United States

returns pistondon:

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

seller pistondon:

  • rating: 99.6%
  • # reviews: 1988 1
  • city: Cameron, Missouri

payments pistondon:

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  • credit card: Discover
  • wallet: Google-pay

offer pistondon:

  • sold: 0
  • started: July 22, 2025
  • best offers: True
  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock

general pistondon:

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

shipping pistondon:

  • transit: 3-8 Days
  • class: Standard
  • service: Standard
  • cost: $0.00
  • type: Fixed
for models: std, for makes: harley, type: piston ring, country/region of manufacture: united states,
category: motorcycle parts > motorcycle scooter parts accessories > engines engine parts > pistons, rings piston kits, sku: 7474639241207611,

Harley-davidson 21951-11 Is Similar To:

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1 offer $84.70 USD
  • Offer #1: $84.70 price + $25.20 shipping estimate = $109.90* total. - Ring Type: 872 Thickness: 2.50 Cr Top Compression Ring 2 pcs.+$25.20 shipping

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