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 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 -
KB PERFORMANCE Forged Piston Kit - Twin Cam KB661C.010
KB PERFORMANCE
$322.95If you're rebuilding a Twin Cam engine or pushing higher boost levels, piston durability directly impacts reliability and longevity. KB Performance's forged 4032 aluminum construction handles elevated combustion pressures and temperatures that cast...09103975- SKU:
- 09103975
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- BORE - OVERSIZE:
- +0,010'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 4.010'
- RIDING STYLE:
- STREET
$322.95 -
JE PISTONS Piston Kit - 95" - Twin Cam 324716
JE PISTONS
$472.99Maximum power output demands pistons engineered for the extreme pressures and temperatures of professional competition. JE's 2618-T6 forged aluminum construction delivers the strength and thermal stability required to withstand forced induction, high...09105935- SKU:
- 09105935
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- DISPLACEMENT:
- 1545 CC
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.875'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- UNITS:
- KIT
$472.99 -
JE PISTONS Piston Kit - M8 370244
JE PISTONS
$472.99If you're building a high-output M8 engine, piston quality directly impacts your power ceiling and longevity under boost or high RPM. The JE PISTONS 370244 kit combines forged 2618-T6 aluminum with a purposeful accumulator groove design to handle serious...09106008- SKU:
- 09106008
- Availability:
- Ships Same Business Day
- Weight:
- 3.21 LBS
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 114'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.937'
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4.375'
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
$472.99 -
JE PISTONS Piston Kit - M8 370246
JE PISTONS
$472.99If you're building a high-compression M8 engine that demands maximum power output and reliability, JE Pistons' forged 2618-T6 construction delivers the strength and precision required for sustained performance. The 11.0:1 compression ratio unlocks...09106010- SKU:
- 09106010
- Availability:
- Ships Same Business Day
- Weight:
- 3.31 LBS
- STROKE LENGTH IMPERIAL:
- 4.375'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.250'
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- DISPLACEMENT:
- 124'
- UNITS:
- KIT
$472.99 -
JE PISTONS Piston Kit - Milwaukee Eight 370247
JE PISTONS
$472.99If you're running a Milwaukee Eight and want measurable gains in combustion efficiency and cylinder pressure, this JE piston kit delivers the engineering to back it up. The 11.0:1 compression ratio and accumulator groove geometry maximize detonation...09106011- SKU:
- 09106011
- Availability:
- Ships Same Business Day
- Weight:
- 3.01 LBS
- STROKE LENGTH IMPERIAL:
- 4.500'
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- BORE SIZE IMPERIAL:
- 4.016'
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 114'
- RIDING STYLE:
- STREET
$472.99Qty in Cart: 0Quantity:Price:$472.99Subtotal: -
JE PISTONS Piston Kit - M8 370249
JE PISTONS
$472.99If you're building a high-performance M8 engine, piston choice directly impacts reliability under sustained combustion pressures and sustained RPM loads. JE PISTONS' 2618-T6 forged construction delivers the tensile strength needed for forced-induction...09106013- SKU:
- 09106013
- Availability:
- Ships Same Business Day
- Weight:
- 3.11 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- DISPLACEMENT:
- 117'
- UNITS:
- KIT
- STROKE LENGTH IMPERIAL:
- 4.500'
- BORE SIZE IMPERIAL:
- 4.075'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
$472.99 -
JE PISTONS Piston Kit - M8 370250
JE PISTONS
$472.99If you're building a high-compression engine that demands reliability under sustained boost or high RPM loads, the JE PISTONS M8 370250 kit delivers the strength and thermal stability required to support aggressive tuning. Forged from premium 2618-T6...09106014- SKU:
- 09106014
- Availability:
- Ships Same Business Day
- Weight:
- 3.11 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 4.080'
- DISPLACEMENT:
- 118'
- STROKE LENGTH IMPERIAL:
- 4.500'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
$472.99Qty in Cart: 0Quantity:Price:$472.99Subtotal: -
JE PISTONS Piston Kit - M8 370251
JE PISTONS
$472.99If you're serious about maximizing power output and reliability in your M8 engine build, JE pistons deliver the engineering precision that separates consistent performance from catastrophic failure. The 2618-T6 forged aluminum construction with optimized...09106015- SKU:
- 09106015
- Availability:
- Ships Same Business Day
- Weight:
- 3.21 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- DISPLACEMENT:
- 120'
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4.500'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 4.125'
- PRODUCT NAME:
- PISTON KIT
$472.99Qty in Cart: 0Quantity:Price:$472.99Subtotal: -
JE PISTONS Piston Kit - M8 370252
JE PISTONS
$472.99If you're pushing your M8 engine toward serious performance gains, piston quality directly determines how much power you can safely extract and how long your build will last. JE Pistons' 370252 kit uses premium 2618-T6 forged aluminum with optimized...09106016- SKU:
- 09106016
- Availability:
- Ships Same Business Day
- Weight:
- 3.06 LBS
- BORE SIZE IMPERIAL:
- 4.250'
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 128'
- STROKE LENGTH IMPERIAL:
- 4.500'
$472.99 -
JE PISTONS Piston Kit - 107" - Twin Cam 317211
JE PISTONS
$545.99If you're building or rebuilding a Twin Cam 107" engine for competition or high-output street duty, piston selection directly impacts reliability, power delivery, and longevity under extreme load. JE Pistons are engineered for professional racing...09105927- SKU:
- 09105927
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.25:1
- DISPLACEMENT:
- 1752 CC
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.937'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
$545.99 -
JE PISTONS Piston Kit - 107" - Twin Cam 317212
JE PISTONS
$545.99If you're building a 107" Twin Cam engine for serious performance, you need pistons engineered to survive extreme conditions—not aftermarket parts that compromise reliability. JE Pistons have earned their reputation in professional competition by...09105928- SKU:
- 09105928
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.75:1
- DISPLACEMENT:
- 1752 CC
- BORE SIZE IMPERIAL:
- 3.937'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$545.99 -
JE PISTONS Piston Kit - 98" - Twin Cam 324722
JE PISTONS
$472.99If you're building or rebuilding a Twin Cam 324 engine destined for the track or high-output street duty, piston quality directly impacts reliability, power delivery, and longevity under extreme conditions. JE Pistons are engineered specifically for...09105937- SKU:
- 09105937
- Availability:
- Ships Same Business Day
- Weight:
- 2.91 LBS
- BORE SIZE IMPERIAL:
- 3.937'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- DISPLACEMENT:
- 1595 CC
- UNITS:
- KIT
$472.99 -
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
$87.95Qty in Cart: 0Quantity:Price:$87.95Subtotal: -
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
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.
