HARLEY-DAVIDSON 21945-99 Piston Ring Set .010 OS/1550

( Brand: Harley-davidson ), ( Manufacturer Part Number: 21945-99 ), ( Part Type: Ring Piston ), ( Machine Type: Street Motorcycle ), ( Items Included: Piston Rings ), ( Country Of Origin: United States )

Review HARLEY DAVIDSON Genuine Piston Ring Set .010 Os/1550

Introducing the Harley-Davidson 21945-99 Piston Ring Set 010 OS/1550, an essential component designed for Harley-Davidson V-Twin engines. This top-quality piston ring set is specifically engineered to deliver superior performance and durability for your motorcycle.

The Harley-Davidson 21945-99 Piston Ring Set 010 OS/1550 includes a complete set of piston rings, consisting of a compression ring, an oil control ring, and a skirt ring. Each ring is meticulously manufactured using high-temperature, heat-resistant materials to ensure a perfect seal and optimal engine functionality.

The compression ring, also known as the piston ring, is responsible for creating the combustion pressure needed to power your motorcycle. This ring in the set is designed to provide a snug fit against the cylinder wall, ensuring maximum compression and efficient power transfer.

The oil control ring plays a vital role in preventing oil from leaking past the piston. The Harley-Davidson 21945-99 Piston Ring Set 010 OS/1550 features an oil control ring that effectively seals the piston to the cylinder wall, minimizing oil consumption and ensuring proper lubrication.

The skirt ring, or the bottom ring, is the first ring installed on the piston. Its primary function is to support the piston and maintain its proper alignment within the engine. This ring in the set is designed to provide a strong seal against the cylinder wall, ensuring the piston remains centered and the engine runs smoothly.

Installing the Harley-Davidson 21945-99 Piston Ring Set 010 OS/1550 is a straightforward process, and it is recommended to follow the manufacturer's instructions carefully. This set is designed for Harley-Davidson engines with an oversize (OS) piston bore of 1550 and a piston ring groove width of 0.010 inches.

Investing in the Harley-Davidson 21945-99 Piston Ring Set 010 OS/1550 is an investment in the longevity and performance of your motorcycle. This top-quality piston ring set is engineered to provide a perfect seal, minimize oil consumption, and ensure efficient power transfer, making it an essential upgrade for any Harley-Davidson V-Twin engine.

Harley-Davidson piston ring sets, like part number 21945-99, are essential components for maintaining the performance and longevity of Harley-Davidson engines. Here are some pros and cons associated with purchasing this specific piston ring set:

1. OEM (Original Equipment Manufacturer) quality: Harley-Davidson piston ring sets, such as 21945-99, are manufactured by the same company that built the engine, ensuring a precise fit and optimal engine performance.

2. Improved engine performance: New piston rings can help improve engine compression, power, and overall performance.

3. Reduced engine wear: Worn or damaged piston rings can lead to increased engine wear and potential damage. Replacing them with new rings helps maintain the engine's health and longevity.

4. Peace of mind: Using genuine Harley-Davidson parts, like the 21945-99 piston ring set, can provide peace of mind knowing that your engine is being serviced with high-quality components.

1. Cost: OEM parts, including piston ring sets, can be more expensive than aftermarket alternatives. However, the cost may be justified based on the benefits of using genuine Harley-Davidson parts.

2. Installation complexities: Installing piston rings can be a challenging and time-consuming process, requiring specialized tools and skills. It may be necessary to hire a professional mechanic to perform the installation.

3. Potential for engine disassembly: In some cases, removing the old piston rings may require disassembling the engine entirely, which can be a labor-intensive and costly process.

The decision to buy a Harley-Davidson 21945-99 piston ring set depends on various factors, including your budget, engine condition, and personal preferences. If you prioritize OEM quality, improved engine performance, and reduced engine wear, purchasing a genuine Harley-Davidson piston ring set may be the best choice for your motorcycle. However, if cost is a concern, you may consider exploring aftermarket alternatives. Ultimately, it is essential to weigh the pros and cons and consult with a professional mechanic if needed to make an informed decision.

If you are looking to ensure optimal engine performance and longevity for your Harley-Davidson motorcycle, investing in a genuine Harley-Davidson 21945-99 piston ring set is a worthwhile investment. However, if cost is a significant concern, it is recommended that you consult with a professional mechanic to discuss aftermarket alternatives and their potential impact on your engine's performance and longevity.

Details:

HARLEY DAVIDSON GENUINE PISTON RING SET .010 OS/1550.

part #: 2194599 prices

• $39.99-$107.30

specifications pistondon:

• for makes: Harley
• brand: Harley-davidson
• mpn: 21945-99
• part type: Ring Piston
• machine type: Street Motorcycle
• items included: Piston Rings
• country of origin: United States

shipping pistondon:

• cost: $8.95
• class: Standard
• type: Calculated
• service: USPS Ground Advantage, FedEx Ground / FedEx Home Delivery, UPS Ground
• transit: 4-10 Days
• carrier: USPS, FedEx, UPS

returns pistondon:

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

seller pistondon:

• city: Daytona Beach, Florida
• # reviews: 12962
• rating: 100.0%

offer pistondon:

• started: May 8, 2026
• availability: In Stock
• best offers: True
• options: Ship-to-home
• quantity: 2
• sold: 0

general pistondon:

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

payments pistondon:

• wallet: Google-pay
• other
• credit card: Visa

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