Harley Piston Rings Only
Harley Bike Piston Rings at JJ Motorsports
Refresh your Harley’s top end with premium piston ring sets from JJ Motorsports, featuring chrome, moly, and high-performance coatings for perfect sealing, reduced blow-by, and maximum durability on Sportster, Big Twin, Evo, Twin Cam, and M8 engines. These precision rings deliver reliable compression and long life.
Shop Hastings, Wiseco, and Revolution Performance rings for proven quality. Explore related categories such as Harley engine for pistons and gaskets, or Harley for cylinders and heads to complete your top-end rebuild.
Top Harley Piston Rings
- Hastings Piston Rings XL-7003 – Chrome-faced ring set for Sportster; excellent wear resistance and oil control.
- Wiseco Ring Set 3504X – High-performance ring set for 3.504" bore; moly-coated top ring for Twin Cam and Evo builds.
- Revolution Performance LLC Ring Set RP4250VMF – Premium ring set for 4.250" bore; designed for high-compression M8 and performance applications.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Hastings HASTINGS Piston Rings - Twin Cam 2M4942+.010
HASTINGS
$37.95Piston rings are the critical sealing component between your pistons and cylinder walls—wear or degradation directly compromises compression, oil consumption, and power output. The Hastings 2M4942+.010 delivers OEM-grade construction with proven ring...DS750689- SKU:
- DS750689
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- UNITS:
- SET
- BORE - OVERSIZE:
- +0,010'
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.750'
- PRODUCT NAME:
- PISTON RING
$37.95 -
Hastings HASTINGS Piston Rings - Twin Cam 2M4941005
HASTINGS
$97.95Piston rings are the critical sealing component between your pistons and cylinder walls—they directly impact compression, blow-by control, and engine longevity. Hastings rings are engineered to strict OEM tolerances and built from proven materials that...DS750693- SKU:
- DS750693
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- UNITS:
- SET
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- MOLY COATED
- BORE - OVERSIZE:
- +0,005'
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- STYLE:
- OEM REPLACEMENT
$97.95 -
Hastings HASTINGS Piston Rings - Twin Cam 2M4941010
HASTINGS
$97.95Piston rings are critical to engine sealing and blow-by control—worn or damaged rings result in compression loss, oil consumption, and reduced power output. The Hastings 2M4941010 delivers OEM-specification performance for Twin Cam engines, ensuring...DS750694- SKU:
- DS750694
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RING MATERIAL:
- MOLY COATED
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,010'
- STYLE:
- OEM REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.875'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
$97.95 -
Hastings HASTINGS Piston Rings - Twin Cam 2M4805
HASTINGS
$101.95Piston rings are critical to engine performance—they seal combustion pressure, regulate oil consumption, and directly impact horsepower delivery and longevity. The Hastings 2M4805 Twin Cam rings are engineered for high-demand applications where precision...09120467- SKU:
- 09120467
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.750'
- UNITS:
- SET
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- MOLY COATED
- STYLE:
- OEM REPLACEMENT
$101.95Qty in Cart: 0Quantity:Price:$101.95Subtotal: -
Hastings HASTINGS Piston Rings - Twin Cam 2M4805005
HASTINGS
$101.95Piston rings are critical to engine sealing and performance—they maintain compression, control oil consumption, and prevent blow-by that degrades power and efficiency. Hastings piston rings are engineered to OEM specifications and manufactured with...09120468- SKU:
- 09120468
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- BORE SIZE IMPERIAL:
- 3.750'
- UNITS:
- SET
- RIDING STYLE:
- STREET
- STYLE:
- OEM REPLACEMENT
- BORE - OVERSIZE:
- +0,005'
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- MOLY COATED
$101.95 -
Hastings HASTINGS Piston Rings - Twin Cam 2M4805010
HASTINGS
$101.95Piston rings are critical to engine sealing and compression integrity—worn or damaged rings lead to blow-by, oil consumption, and power loss. The Hastings Twin Cam 2M4805010 ring set delivers OEM-quality sealing with proven ring designs that balance...09120469- SKU:
- 09120469
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.750'
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,010'
- STYLE:
- OEM REPLACEMENT
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- RING MATERIAL:
- MOLY COATED
$101.95 -
Hastings HASTINGS Piston Rings - Twin Cam 2M4942
HASTINGS
$97.95Piston rings are critical to engine performance—they seal combustion pressure, regulate oil consumption, and directly impact compression and power delivery. The Hastings 2M4942 Twin Cam ring set delivers the precision engineering and material quality...DS750687- SKU:
- DS750687
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.750'
- PRODUCT NAME:
- PISTON RING
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- RIDING STYLE:
- STREET
- STYLE:
- OEM REPLACEMENT
- RING MATERIAL:
- MOLY COATED
$97.95 -
Hastings HASTINGS Piston Rings - Twin Cam 2M4941
HASTINGS
$97.95Piston rings are the critical seal between your combustion chamber and crankcase—wear them out, and you're looking at blow-by, lost compression, and catastrophic engine failure. Hastings 2M4941 rings are engineered for Twin Cam engines with premium...DS750692- SKU:
- DS750692
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RING MATERIAL:
- MOLY COATED
- PRODUCT NAME:
- PISTON RING
- STYLE:
- OEM REPLACEMENT
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- UNITS:
- SET
$97.95 -
Wiseco Ring Set 3.1875in 1972-1985 Harley-Davidson XLH1000 3208X
WISECO
$52.95Rebuild your XLH1000 with rings engineered to handle peak combustion pressures and maintain proper blow-by sealing across thousands of heat cycles. Wiseco's precision ring sets are the baseline component for any serious Harley engine restoration,...3208X- SKU:
- 3208X
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- BORE SIZE IMPERIAL:
- 3.1875'
- RING MATERIAL:
- STEEL
- BORE - OVERSIZE:
- +0,020'
- MODEL:
- X-RING
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
$52.95Qty in Cart: 0Quantity:Price:$52.95Subtotal: -
Hastings HASTINGS Piston Rings - Twin Cam 2M4985005
HASTINGS
$87.95Piston rings are critical wear items that directly impact compression, blow-by control, and oil consumption—making quality rings essential for any rebuild or high-mileage engine refresh. The Hastings 2M4985005 delivers proven durability and reliable...DS750875- SKU:
- DS750875
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RING MATERIAL:
- MOLY COATED
- BORE - OVERSIZE:
- +0,005'
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PISTON RING
- STYLE:
- PERFORMANCE REPLACEMENT
- UNITS:
- SET
$87.95 -
Hastings HASTINGS Piston Rings - Twin Cam 2M4985
HASTINGS
$87.95Piston rings are critical to engine sealing, compression, and oil control—worn or improper rings lead to blow-by, power loss, and accelerated wear. The Hastings 2M4985 Twin Cam piston ring set delivers OEM-quality performance with proven materials and...DS750874- SKU:
- DS750874
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.875'
- PRODUCT NAME:
- PISTON RING
- STYLE:
- PERFORMANCE REPLACEMENT
- RIDING STYLE:
- STREET
- RING MATERIAL:
- MOLY COATED
$87.95 -
Hastings HASTINGS Piston Rings - Twin Cam 2M4793
HASTINGS
$75.95Piston rings are critical to engine sealing, compression, and oil control—and worn or substandard rings will cost you power, fuel efficiency, and engine longevity. Hastings 2M4793 rings deliver OEM-quality performance with precision manufacturing that...DS750869- SKU:
- DS750869
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- UNITS:
- SET
- PRODUCT NAME:
- PISTON RING
- STYLE:
- PERFORMANCE REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.750'
- RIDING STYLE:
- STREET
- RING MATERIAL:
- MOLY COATED
$75.95 -
Hastings HASTINGS Piston Rings - Shovelhead 2M6127005
HASTINGS
$82.95Piston rings are the critical seal between your combustion chamber and crankcase—wear them out, and you're looking at blow-by, lost compression, and catastrophic engine degradation. Hastings piston rings are engineered to maintain that seal under extreme...DS750867- SKU:
- DS750867
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.503'
- RIDING STYLE:
- STREET
- STYLE:
- PERFORMANCE REPLACEMENT
- PRODUCT NAME:
- PISTON RING
- BORE - OVERSIZE:
- +0,005'
- RING MATERIAL:
- MOLY COATED
$82.95 -
Hastings HASTINGS Piston Rings 2M5721
HASTINGS
$39.95Piston rings are critical to engine sealing and compression—worn or substandard rings lead to blow-by, oil consumption, and power loss. The Hastings 2M5721 delivers OEM-quality construction with proven ring designs that maintain proper bore contact...DS750861- SKU:
- DS750861
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- RING MATERIAL:
- MOLY COATED
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- PISTON RING
- STYLE:
- PERFORMANCE REPLACEMENT
$39.95 -
Hastings HASTINGS Piston Rings - Evolution 2M6198
HASTINGS
$55.95Piston rings are critical to engine sealing and performance—inadequate ring quality leads to blow-by, loss of compression, and accelerated wear. Hastings Evolution 2M6198 rings deliver the precision engineering and material science your engine needs to...DS750850- SKU:
- DS750850
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- MOLY COATED
- STYLE:
- OEM REPLACEMENT
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- BORE SIZE IMPERIAL:
- 3.000'
- RIDING STYLE:
- STREET
- UNITS:
- SET
$55.95Qty in Cart: 0Quantity:Price:$55.95Subtotal: -
Hastings HASTINGS Piston Rings - Evolution 2M6164030
HASTINGS
$49.95Piston rings are the critical seal between your pistons and cylinder walls—and cheap or worn rings will cost you compression, blow-by, and power. Hastings has engineered the Evolution 2M6164030 rings to deliver reliable sealing across the full RPM range...DS750843- SKU:
- DS750843
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE - OVERSIZE:
- +0,030'
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- MOLY COATED
- STYLE:
- OEM REPLACEMENT
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- BORE SIZE IMPERIAL:
- 3.528'
- UNITS:
- SET
- RIDING STYLE:
- STREET
$49.95 -
Hastings HASTINGS Piston Rings - Evolution 2M6164020
HASTINGS
$49.95Piston rings are the critical seal between your combustion chamber and crankcase—get them wrong, and you're looking at blow-by, oil consumption, and power loss. Hastings' Evolution 2M6164020 rings are engineered with a proven combination of materials and...DS750842- SKU:
- DS750842
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- PISTON RING
- STYLE:
- OEM REPLACEMENT
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- UNITS:
- SET
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,020'
- BORE SIZE IMPERIAL:
- 3.498'
- RING MATERIAL:
- MOLY COATED
$49.95 -
Hastings HASTINGS Piston Rings - Evolution 2M6164010
HASTINGS
$49.95Proper ring design is fundamental to engine longevity and performance—Hastings Evolution piston rings deliver precise compression sealing while minimizing blowby and oil consumption. Whether you're rebuilding a street engine or preparing for sustained...DS750841- SKU:
- DS750841
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- PISTON RING
- STYLE:
- OEM REPLACEMENT
- UNITS:
- SET
- BORE - OVERSIZE:
- +0,010'
- RING MATERIAL:
- MOLY COATED
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.508'
- RIDING STYLE:
- STREET
$49.95 -
Hastings HASTINGS Piston Rings - Evolution 2M6164
HASTINGS
$49.95Piston rings are where cylinder pressure meets reliability—and Hastings has engineered the Evolution 2M6164 to deliver both. Whether you're building a high-revving engine or restoring a proven platform, these rings maintain consistent blowby control and...DS750840- SKU:
- DS750840
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- UNITS:
- SET
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.498'
- RING MATERIAL:
- MOLY COATED
- STYLE:
- OEM REPLACEMENT
- PRODUCT NAME:
- PISTON RING
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
Hastings HASTINGS Piston Rings - Shovelhead 2M6127040
HASTINGS
$82.95Piston rings are critical to engine sealing, compression, and oil control—worn or substandard rings lead to blow-by, power loss, and accelerated wear on cylinder walls. The Hastings Piston Ring Set for Shovelhead engines delivers OEM-equivalent...DS750834- SKU:
- DS750834
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- RING MATERIAL:
- MOLY COATED
- BORE OVERSIZE - IMPERIAL:
- +0.040'
- BORE SIZE IMPERIAL:
- 3.538'
- PRODUCT NAME:
- PISTON RING
- STYLE:
- PERFORMANCE REPLACEMENT
- UNITS:
- SET
- BORE - OVERSIZE:
- +0,040'
$82.95
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Engine Rings Only
- Compatibility: Ensure rings match your Harley's engine type (e.g., Big Twin, Twin Cam, Evo, M8) and bore size (standard or oversize +0.005/+0.010/+0.020). Use the vehicle selector for model-specific fits to avoid compression loss or rebuild issues.
- Type of Use: For standard rebuilds, choose moly-faced rings for quick seating; high-performance engines benefit from plasma-moly or low-tension rings for reduced friction and better power in demanding conditions.
- Components and Upgrades: Select ring sets for one piston (top, second, oil rings); upgrade to oversize for bored engines or gapless designs for improved sealing.
- Brand and Quality: Opt for Wiseco or Hastings for high-quality moly-faced rings with precise tolerances. Prioritize materials like cast iron or steel for durability and compatibility with forged pistons.
- Installation and Cost: Rings are part of DIY piston installs with basic tools; prices range from $20 for basic sets to $50 for premium oversize—factor in free shipping over $99 and expert support for value.
Frequently Asked Questions (FAQs)
- What Harley models and engines do these rings support? Rings support Big Twin, Twin Cam, Evo, M8, and models like Road King or Heritage Softail—use the year/make/model filter for bore-specific compatibility.
- How do moly-faced rings improve performance? They provide quick break-in, better sealing, and reduced friction for optimal compression and power in rebuilds.
- What is typically included in a ring set? Sets include top, second, and oil rings for one piston; check details for standard vs. oversize and any clips.
- Are these rings suitable for oversize bores? Yes, available in +0.005 to +0.020 oversizes for bored cylinders in performance upgrades.
- What if a ring set doesn't fit my Harley? Verify bore size and engine type before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related engine parts? Yes—explore pistons, gaskets, cylinders/heads, or full kits in the Harley engine category to complement your rings for a complete rebuild.
