Harley Piston and Ring Kits
Harley Bike Piston & Ring Kits at JJ Motorsports
Rebuild your Harley's top end with premium piston and ring kits from JJ Motorsports, featuring forged aluminum pistons with high-performance rings for increased compression and durability on Big Twin, Evo, Twin Cam, and Sportster engines. These kits deliver reliable power and long-lasting performance.
Shop KB Performance, Wiseco, and Revolution Performance piston kits for race-proven quality. Explore related categories such as Harley engine for gaskets and rebuilds, or Harley for cams and heads to complete your top-end refresh.
Top Harley Piston & Ring Kits
- KB Performance Super Duty Piston KB660LCA-STD – Forged super-duty piston with rings for 660cc; ideal for high-compression Evo builds.
- Wiseco Piston Kit with Gasket VM Ring VT2719 – Complete Wiseco kit for Twin Cam; includes rings and gaskets for reliable top-end power.
- Revolution Performance LLC Piston Kit RP301-601W – 601cc piston kit with wrist pin; forged for Sportster performance upgrades.
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
-
On Sale
S&S CYCLE Piston Kit 106-3690
S&S CYCLE
MSRP: $514.95Now: $473.75Was: $514.95If you're running a stock 883cc or 1200cc Big Twin, you're leaving significant power on the table. The S&S CYCLE Piston Kit 106-3690 bumps displacement to 1250cc while maintaining reliable 10.3:1...09104209- SKU:
- 09104209
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- BORE SIZE IMPERIAL:
- 3.927'
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- STREET
- DISPLACEMENT:
- 106'
- PISTON HEAD SHAPE:
- FLAT TOP
- TYPE:
- REPLACEMENT
- UNITS:
- KIT
MSRP: $514.95Now: $473.75Was: $514.95 -
On Sale
S&S CYCLE High Compression Piston Kit 920-0114
S&S CYCLE
MSRP: $521.95Now: $480.19Was: $521.95If you're running stock pistons, you're leaving power on the table. The S&S Cycle High Compression Piston Kit delivers measurable horsepower gains while preserving the torque curve your engine...09103979- SKU:
- 09103979
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- DISPLACEMENT:
- 110'
- PISTON HEAD SHAPE:
- RAISED DOME
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.6:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 4.000'
- TYPE:
- HIGH COMPRESSION
MSRP: $521.95Now: $480.19Was: $521.95 -
On Sale
S&S CYCLE Piston Kit 920-0027
S&S CYCLE
MSRP: $169.95Now: $156.35Was: $169.95If you're running an 883cc or 1200cc Big Twin and want measurable power gains without a complete engine overhaul, this S&S piston kit delivers a straightforward displacement bump to 1250cc with a...09105260- SKU:
- 09105260
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,020'
- DISPLACEMENT:
- 80'
- PISTON HEAD SHAPE:
- FLAT TOP
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.500'
- PISTON MATERIAL:
- CAST
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- UNITS:
- KIT
MSRP: $169.95Now: $156.35Was: $169.95 -
On Sale
S&S CYCLE Piston Kit 920-0015
S&S CYCLE
MSRP: $169.95Now: $156.35Was: $169.95Building serious displacement on your Big Twin? The S&S CYCLE Piston Kit 920-0015 delivers a straightforward path to 1250cc without sacrificing reliability. By stepping up from stock bore dimensions,...09105261- SKU:
- 09105261
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- DISPLACEMENT:
- 80'
- PISTON HEAD SHAPE:
- FLAT TOP
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.500'
- PISTON MATERIAL:
- CAST
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- BORE OVERSIZE - IMPERIAL:
- STANDARD
MSRP: $169.95Now: $156.35Was: $169.95 -
On Sale
S&S CYCLE Wrist Pin Circlips - 4 pack 106-2304
S&S CYCLE
MSRP: $7.95Now: $7.31Was: $7.95Wrist pin circlips are critical retention components that keep your piston pins securely seated during high-RPM operation. OEM or worn circlips can fail under load, leading to catastrophic engine...09105262- SKU:
- 09105262
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- CIRCLIP
- UNITS:
- 4 PACK
- RIDING STYLE:
- STREET
MSRP: $7.95Now: $7.31Was: $7.95 -
On Sale
S&S CYCLE Piston Kit 106-0432
S&S CYCLE
MSRP: $481.95Now: $443.39Was: $481.95If you're running a Big Twin with stock displacement limits holding you back, the S&S CYCLE 1250cc piston kit unlocks meaningful power gains while maintaining reliability on the street or strip. This...09105020- SKU:
- 09105020
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- DISPLACEMENT:
- 103'
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- STREET
- PISTON HEAD SHAPE:
- FLAT TOP
- TYPE:
- REPLACEMENT
- BORE SIZE IMPERIAL:
- 3.875'
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
MSRP: $481.95Now: $443.39Was: $481.95 -
On Sale
S&S CYCLE Piston Kit 92-1211
S&S CYCLE
MSRP: $546.95Now: $503.19Was: $546.95If you're building a high-displacement stroker engine for your HD Big Twin, you need pistons engineered for the specific displacement and load demands of your build. The S&S CYCLE 92-1211 forged...20012911- SKU:
- 20012911
- Availability:
- Ships Same Business Day
- Weight:
- 3.02 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.875'
- DISPLACEMENT:
- 106'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,010'
- PISTON MATERIAL:
- FORGED ALUMINUM
- UNITS:
- KIT
- STROKE LENGTH IMPERIAL:
- 4-1/2'
MSRP: $546.95Now: $503.19Was: $546.95Qty in Cart: 0Quantity:Price:MSRP: $546.95Now: $503.19Was: $546.95Subtotal: -
On Sale
S&S CYCLE Piston Kit 92-1212
S&S CYCLE
MSRP: $546.95Now: $503.19Was: $546.95If you're building a 106" stroker engine for your HD Big Twin, you need pistons engineered specifically for that displacement—not generic aftermarket units. The S&S Cycle 92-1212 forged pistons are...20012912- SKU:
- 20012912
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- STROKE LENGTH IMPERIAL:
- 4-1/2'
- BORE - OVERSIZE:
- +0,020'
- PISTON MATERIAL:
- FORGED ALUMINUM
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.875'
- DISPLACEMENT:
- 106'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
MSRP: $546.95Now: $503.19Was: $546.95 -
On Sale
S&S CYCLE Replacement Pistons with Rings 92-2027
S&S CYCLE
MSRP: $484.95Now: $446.15Was: $484.95Upgrading to S&S Cycle replacement pistons is essential when maximizing the performance potential of your S&S cylinder heads. These 10:1 compression pistons are engineered to handle the increased...09100007- SKU:
- 09100007
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- BORE - OVERSIZE:
- +0,010'
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.500'
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
MSRP: $484.95Now: $446.15Was: $484.95 -
On Sale
S&S CYCLE Replacement Pistons with Rings 92-2028
S&S CYCLE
MSRP: $484.95Now: $446.15Was: $484.95If you're building a high-performance S&S engine, your pistons are the foundation of reliable power delivery and longevity under sustained load. These S&S replacement pistons deliver the compression...09100008- SKU:
- 09100008
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- BORE - OVERSIZE:
- +0,020'
- BORE SIZE IMPERIAL:
- 3.500'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
MSRP: $484.95Now: $446.15Was: $484.95 -
On Sale
S&S CYCLE Piston Kit 92-2016
S&S CYCLE
MSRP: $484.95Now: $446.15Was: $484.95If you're running an 883cc or 1200cc Big Twin and want a straightforward displacement bump without extensive engine work, the S&S CYCLE Piston Kit 92-2016 delivers a 1250cc conversion at a reasonable...09100009- SKU:
- 09100009
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- COMPRESSION RATIO IMPERIAL:
- 12.2:1
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- BORE SIZE IMPERIAL:
- 3.500'
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- UNITS:
- KIT
- DISPLACEMENT:
- 1200 CC
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- STREET
- TYPE:
- HIGH COMPRESSION
MSRP: $484.95Now: $446.15Was: $484.95 -
On Sale
S&S CYCLE Piston Kit 92-2017
S&S CYCLE
MSRP: $484.95Now: $446.15Was: $484.95Looking to unlock genuine displacement gains from your Big Twin? The S&S Cycle 1250cc Piston Kit delivers a straightforward path to increased cubic inches, higher compression, and measurable power...09100011- SKU:
- 09100011
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- DISPLACEMENT:
- 1200 CC
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- STREET
- TYPE:
- HIGH COMPRESSION
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.500'
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH IMPERIAL:
- 4-5/8'
- UNITS:
- KIT
- BORE - OVERSIZE:
- +0,010'
- COMPRESSION RATIO IMPERIAL:
- 12.2:1
MSRP: $484.95Now: $446.15Was: $484.95Qty in Cart: 0Quantity:Price:MSRP: $484.95Now: $446.15Was: $484.95Subtotal: -
On Sale
S&S CYCLE Replacement Pistons with Rings 92-2026
S&S CYCLE
MSRP: $484.95Now: $446.15Was: $484.95If you're building or rebuilding a high-performance engine with S&S Cycle heads, these replacement pistons are essential to unlocking the full potential of your investment. The 10:1 compression ratio...09100005- SKU:
- 09100005
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE OVERSIZE - IMPERIAL:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON HEAD SHAPE:
- DOMED
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $484.95Now: $446.15Was: $484.95 -
On Sale
S&S CYCLE Replacement Pistons with Rings 92-20265
S&S CYCLE
MSRP: $459.95Now: $423.15Was: $459.95Whether you're building a high-compression Harley engine or upgrading an existing platform, S&S Cycle pistons deliver the compression ratio and ring sealing you need for consistent power gains and...09100006- SKU:
- 09100006
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.005'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.500'
- UNITS:
- KIT
- BORE - OVERSIZE:
- +0,005'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON HEAD SHAPE:
- DOMED
MSRP: $459.95Now: $423.15Was: $459.95 -
REVOLUTION PERFORMANCE, LLC Piston Kit RP301-116WD
REVOLUTION PERFORMANCE, LLC
$495.95High-rpm stability and durability demand pistons engineered for extreme conditions—and this custom-forged kit delivers both. The RP301-116WD combines precision manufacturing with skirt coating and...09106373- SKU:
- 09106373
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- BORE SIZE IMPERIAL:
- 3.937'
- DISPLACEMENT:
- 107'
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- COMPRESSION RATIO IMPERIAL:
- 10.6:1
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- PISTON HEAD SHAPE:
- DOMED
$495.95 -
KB PERFORMANCE Piston Kit KB266.040.3
KB PERFORMANCE
$246.95If you're building a high-performance engine that demands precision and longevity, KB Performance pistons deliver the tight tolerances and superior ring seal that separate a reliable power plant from...DS751252- SKU:
- DS751252
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.498'
- BORE OVERSIZE - IMPERIAL:
- +0.040'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PISTON MATERIAL:
- HYPEREUTECTIC ALLOY
- RIDING STYLE:
- STREET
$246.95Qty in Cart: 0Quantity:Price:$246.95Subtotal: -
KB PERFORMANCE Super-Duty Piston KB661LCA.010
KB PERFORMANCE
$442.95Ring seal integrity and piston stability are foundational to engine longevity and performance. The KB PERFORMANCE Super-Duty Piston KB661LCA.010 eliminates common failure points—piston rock, ring...09105048- SKU:
- 09105048
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- BORE SIZE METRIC:
- 101.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- PISTON MATERIAL:
- ALUMINUM
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH IMPERIAL:
- 4-3/8'
- DISPLACEMENT:
- 110'
- RIDING STYLE:
- STREET
$442.95Qty in Cart: 0Quantity:Price:$442.95Subtotal: -
KB PERFORMANCE Piston - Evolution KB920C.020
KB PERFORMANCE
$285.57Reliable piston performance is the foundation of any high-revving engine build, and the KB PERFORMANCE Evolution KB920C.020 delivers the durability and precision you need for consistent power...09105057- SKU:
- 09105057
- Availability:
- Ships Same Business Day
- Weight:
- 2.75 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.5:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,020'
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- BORE SIZE IMPERIAL:
- 3.498'
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
$285.57Qty in Cart: 0Quantity:Price:$285.57Subtotal: -
KB PERFORMANCE Piston - Evolution KB921C.010
KB PERFORMANCE
$299.95KB Performance's Evolution KB921C.010 pistons deliver the reliability and precision your engine demands, whether you're pushing peak boost on the dyno or logging consistent lap times at the track...09105059- SKU:
- 09105059
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- PRODUCT NAME:
- PISTON KIT
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.498'
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- BORE - OVERSIZE:
- +0,010'
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- UNITS:
- KIT
$299.95Qty in Cart: 0Quantity:Price:$299.95Subtotal: -
Wiseco Piston Kit 1999-2006 Harley-Davidson Road King FLHR VT2721
WISECO
$659.95A worn or damaged top end can rob your Road King of performance and reliability. The Wiseco Piston Kit VT2721 gives you everything needed for a complete, quality rebuild—high-silicon forged pistons...09030793- SKU:
- 09030793
- Availability:
- Ships Same Business Day
- Weight:
- 4.01 LBS
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- DISPLACEMENT:
- 1554 CC
- PISTON MATERIAL:
- ALUMINUM
- BORE - OVERSIZE:
- +0,010'
- STROKE LENGTH IMPERIAL:
- 4'
$659.95Qty in Cart: 0Quantity:Price:$659.95Subtotal:
Buying Guide and FAQs
Buying Guide: Factors to Consider When Choosing Harley Bike Piston and Ring Kits
- Compatibility: Match kits to your Harley's engine type (e.g., Big Twin, Twin Cam, Sportster, M8) and model (e.g., FLHR Road King 1984-1998, XLH1200 Sportster 1988-2003, FLST Heritage Softail 2006). Use the vehicle selector for year-specific fits, including bore oversizes (+0.005" to +0.188") and displacements (1200cc-1353cc) to ensure precise rebuilds without modifications.
- Type of Use: For high-performance or street builds, select forged kits with high compression (10.0:1-11.1:1) for power gains; standard rebuilds benefit from super-duty options with skirt coatings for quiet operation and durability in touring or daily riding.
- Components and Upgrades: Choose kits including pistons, rings, pins, clips, and sometimes gaskets; upgrade to ArmorGlide/ArmorFit coatings for reduced friction and zero clearance install. Focus on high-silicon aluminum alloys for strength and reliability.
- Brand and Quality: Opt for Wiseco for forged aluminum kits with advanced coatings and high compression, or KB Performance for super-duty pistons with skirt technology. Prioritize OEM-matching quality for long-lasting performance and precise fits.
- Installation and Cost: Kits are designed for DIY or professional top-end rebuilds with basic tools; prices range from $307 for standard kits to $659 for premium options with gaskets—factor in expert support and free shipping over $99 for value.
Frequently Asked Questions (FAQs)
- What Harley models and engines do these piston and ring kits support? Kits are compatible with Big Twin (e.g., Road King 1984-1998), Sportster (e.g., XLH1200 1988-2003), Twin Cam (e.g., Heritage Softail 2006), and M8 (e.g., Street Glide ST 2022-2023)—use the year/make/model filter for exact matches.
- How do forged pistons improve engine performance? Forged aluminum pistons (e.g., Wiseco) with high-silicon alloys and coatings reduce friction, enhance strength, and support higher compression for better power and efficiency in rebuilds.
- What is typically included in a kit? Most kits include pistons, rings, pins, spiral-lock clips, and sometimes gaskets (e.g., Wiseco VT2719); check details for oversize options and top-end components.
- Are these kits suitable for oversize bores? Yes, available in standard to +0.188" oversizes for bored engines, with compression ratios from 9.0:1 to 11.1:1 for custom builds.
- What if a kit doesn't fit my Harley? Verify bore size, displacement, and model before buying. Our returns policy allows exchanges or refunds if it doesn't match.
- Can I find related engine parts? Yes—explore gaskets, cylinders/heads, bearings/seals, or full rebuild kits in the Harley engine category to complete your top-end refresh.
