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
-
KB PERFORMANCE Piston Kit - FX/FL KB263.010
KB PERFORMANCE
$239.95If you're building or rebuilding an engine that demands precision and longevity, KB Performance pistons are engineered to deliver both. These diamond-machined pistons hold tolerances tighter than industry standard—plus or minus one gram across the...DS751203- SKU:
- DS751203
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.437'
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
$239.95 -
KB PERFORMANCE Piston Kit - FX/FL KB263.050
KB PERFORMANCE
$239.95If you're building a high-revving FX/FL engine that demands precision and reliability, KB Performance pistons deliver the tight tolerances and superior ring seal that separate competitive builds from the rest. These diamond-machined pistons allow...DS751207- SKU:
- DS751207
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- UNITS:
- KIT
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.437'
- BORE OVERSIZE - IMPERIAL:
- +0.050'
$239.95 -
KB PERFORMANCE Piston Kit - FX/FL KB263.060
KB PERFORMANCE
$239.95If you're building a high-performance engine that demands precision and longevity, KB Performance pistons deliver the tight tolerances and reliable ring seal that separate a well-tuned build from a marginal one. These diamond-machined pistons minimize...DS751208- SKU:
- DS751208
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- BORE OVERSIZE - IMPERIAL:
- +0.060'
- BORE SIZE IMPERIAL:
- 3.437'
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- RIDING STYLE:
- STREET
$239.95 -
KB PERFORMANCE Piston Kit - XL KB292.020
KB PERFORMANCE
$269.95KB Performance pistons are precision-engineered for racers and serious enthusiasts who demand tight tolerances and extended component life. The diamond-machined 390 hypereutectic aluminum construction allows you to run tighter clearances than...DS751219- SKU:
- DS751219
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 8.2:1
- BORE SIZE IMPERIAL:
- 3.208'
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- RIDING STYLE:
- STREET
$269.95Qty in Cart: 0Quantity:Price:$269.95Subtotal: -
KB PERFORMANCE Piston Kit - XL KB292.030
KB PERFORMANCE
$269.95If you're building a high-performance engine that demands precision and reliability, KB Performance pistons are engineered to deliver both. The KB292.030 kit uses T-5 heat-treated 390 hypereutectic aluminum to handle the thermal and mechanical stress of...DS751220- SKU:
- DS751220
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- BORE SIZE IMPERIAL:
- 3.1875'
- COMPRESSION RATIO IMPERIAL:
- 8.2:1
$269.95 -
KB PERFORMANCE Piston Kit - XL KB295.010
KB PERFORMANCE
$227.95If you're building a high-revving engine or pushing boost levels beyond stock capability, piston durability and ring seal directly impact power output and engine longevity. KB Performance pistons are held to tolerances tighter than most OEM...DS751237- SKU:
- DS751237
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- BORE SIZE IMPERIAL:
- 3.498'
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- PISTON HEAD SHAPE:
- FLAT TOP
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
$227.95 -
KB PERFORMANCE Piston Kit KB297.000
KB PERFORMANCE
$246.95If you're serious about engine longevity and ring seal quality, piston tolerances matter—a lot. KB Performance's diamond-machined pistons are held to plus-or-minus one gram weight and half-thousandth-inch tolerances, allowing you to run tighter...DS751258- SKU:
- DS751258
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 8.3:1
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.498'
$246.95 -
KB PERFORMANCE Piston Kit - Twin Cam KB411.000
KB PERFORMANCE
$307.95If you're building a high-revving engine or rebuilding after serious track time, piston quality directly impacts reliability and performance. KB Performance's T-5 heat-treated hypereutectic aluminum alloy delivers superior strength while allowing tighter...DS751286- SKU:
- DS751286
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- BORE SIZE IMPERIAL:
- 3.875'
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- RIDING STYLE:
- STREET
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
$307.95Qty in Cart: 0Quantity:Price:$307.95Subtotal: -
KB PERFORMANCE Piston Kit KB348.010
KB PERFORMANCE
$295.95If you're building or rebuilding a high-performance engine, piston quality directly impacts reliability, ring seal, and longevity under boost or high RPM. KB Performance pistons are manufactured to exacting tolerances and engineered for a tighter fit...09102020- SKU:
- 09102020
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.875'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 9.3:1
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
$295.95Qty in Cart: 0Quantity:Price:$295.95Subtotal: -
KB PERFORMANCE Piston Kit - Twin Cam KB409C.005
KB PERFORMANCE
$236.95If you're building or rebuilding a Twin Cam engine, piston quality directly impacts reliability, longevity, and ring seal—three things that separate a weekend warrior from a competitor. KB Performance's hypereutectic design and diamond-machined...09100916- SKU:
- 09100916
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- BORE SIZE IMPERIAL:
- 3.875'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- UNITS:
- KIT
$236.95 -
KB PERFORMANCE Forged Piston Kit - Twin Cam KB904C.STD
KB PERFORMANCE
$322.95If you're rebuilding a Twin Cam engine or restoring your top-end assembly, you need pistons engineered for reliability under sustained load. The KB PERFORMANCE Forged Piston Kit delivers forged 4032 aluminum construction that handles both street and...09100933- SKU:
- 09100933
- Availability:
- Ships Same Business Day
- Weight:
- 2.20 LBS
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- UNITS:
- KIT
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- COMPRESSION RATIO IMPERIAL:
- 9.25:1
$322.95Qty in Cart: 0Quantity:Price:$322.95Subtotal: -
KB PERFORMANCE Piston - Evolution KB920C.005
KB PERFORMANCE
$299.95KB Performance pistons are engineered for reliability and consistent power delivery in high-rpm applications. The 4032 aluminum alloy forging provides the strength needed for forced induction and extended engine duty, while the offset pin design...09105055- SKU:
- 09105055
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,005'
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- BORE SIZE IMPERIAL:
- 3.498'
$299.95 -
KB PERFORMANCE Forged Piston Kit - Twin Cam KB661C.005
KB PERFORMANCE
$322.95When you're pushing your Twin Cam engine to its limits, stock pistons become a liability. The KB PERFORMANCE Forged Piston Kit delivers the strength and precision needed for sustained high-RPM performance without sacrificing reliability. Built from...09103974- SKU:
- 09103974
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.005'
- UNITS:
- KIT
- BORE - OVERSIZE:
- +0,005'
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
$322.95Qty in Cart: 0Quantity:Price:$322.95Subtotal: -
KB PERFORMANCE Forged Piston Kit - Twin Cam KB907C.STD
KB PERFORMANCE
$322.95If you're rebuilding a Twin Cam engine or pushing it beyond stock limits, piston quality directly impacts reliability and performance. KB Performance's forged 4032 aluminum construction resists detonation and thermal stress better than cast alternatives,...09100937- SKU:
- 09100937
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- BORE SIZE IMPERIAL:
- 3.875'
$322.95 -
Hastings HASTINGS Piston Rings - XL 7003010
HASTINGS
$74.95Piston rings are fundamental to engine sealing and compression integrity—without quality rings, you're losing power, burning oil, and accelerating wear. Hastings' XL 7003010 delivers proven reliability with proven ring geometry that maintains consistent...DS750611- SKU:
- DS750611
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RING MATERIAL:
- MOLY COATED
- BORE - OVERSIZE:
- +0,010'
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- PRODUCT NAME:
- PISTON RING
- STYLE:
- OEM REPLACEMENT
- RIDING STYLE:
- STREET
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.197'
$74.95 -
Hastings HASTINGS Piston Rings - Shovelhead 6127010
HASTINGS
$61.95Piston rings are critical to maintaining compression, controlling oil consumption, and ensuring reliable ring seal across your Shovelhead's operating range. The Hastings 6127010 ring set combines proven cast and moly technology with a reverse torsional...DS750631- SKU:
- DS750631
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- RING MATERIAL:
- CAST
- STYLE:
- OEM REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.508'
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- STREET
- UNITS:
- SET
- BORE - OVERSIZE:
- +0,010'
$61.95 -
Hastings HASTINGS Piston Rings - Evolution 6164030
HASTINGS
$35.95Hastings piston rings are engineered for serious builders who demand reliable ring seal, low blowby, and consistent compression across the RPM range. The Evolution 6164030 delivers proven durability with a purpose-built design that minimizes friction...DS750643- SKU:
- DS750643
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE - OVERSIZE:
- +0,030'
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- CAST
- STYLE:
- OEM REPLACEMENT
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- RIDING STYLE:
- STREET
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.498'
$35.95 -
KB PERFORMANCE Forged Piston Kit - Twin Cam KB661C.STD
KB PERFORMANCE
$322.95If you're running a Twin Cam engine that demands reliable, high-rpm performance, OEM pistons won't cut it. The KB PERFORMANCE Forged Piston Kit delivers the strength and precision needed to handle increased boost, extended rev limits, and sustained...09103973- SKU:
- 09103973
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- BORE SIZE IMPERIAL:
- 4.000'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- RIDING STYLE:
- STREET
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- UNITS:
- KIT
$322.95 -
Hastings HASTINGS Piston Rings - 1200 2M6482040
HASTINGS
$80.95Piston rings are a critical wear item that directly impacts compression, oil control, and engine longevity. The Hastings 2M6482040 ring set delivers precision bore sealing and consistent blowby reduction across the entire RPM range—essential whether...DS750824- SKU:
- DS750824
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- PISTON RING
- RING MATERIAL:
- MOLY COATED
- STYLE:
- PERFORMANCE REPLACEMENT
- BORE - OVERSIZE:
- +0,040'
- BORE OVERSIZE - IMPERIAL:
- +0.040'
- UNITS:
- SET
- BORE SIZE IMPERIAL:
- 3.477'
- RIDING STYLE:
- STREET
$80.95 -
Hastings HASTINGS Piston Rings - 1200 2M6482030
HASTINGS
$80.95Piston rings are critical to engine sealing, compression, and oil control—worn or improper rings lead to blow-by, loss of power, and accelerated engine wear. The Hastings 2M6482030 ring set delivers OEM-grade sealing with proven durability across...DS750823- SKU:
- DS750823
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RING MATERIAL:
- MOLY COATED
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,030'
- BORE OVERSIZE - IMPERIAL:
- +0.030'
- BORE SIZE IMPERIAL:
- 3.467'
- PRODUCT NAME:
- PISTON RING
- STYLE:
- PERFORMANCE REPLACEMENT
- UNITS:
- SET
$80.95
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.
