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: $463.46Was: $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 compression, delivering a straightforward path to...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: $463.46Was: $514.95 -
On Sale
S&S CYCLE High Compression Piston Kit 920-0114
S&S CYCLE
MSRP: $521.95Now: $469.76Was: $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 depends on—all with a straightforward EFI tune. Whether...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: $469.76Was: $521.95 -
On Sale
S&S CYCLE Piston Kit 920-0027
S&S CYCLE
MSRP: $169.95Now: $152.96Was: $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 solid 10.3:1 compression ratio. The cast flat-top design...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: $152.96Was: $169.95 -
On Sale
S&S CYCLE Piston Kit 920-0015
S&S CYCLE
MSRP: $169.95Now: $152.96Was: $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, you gain meaningful low-end torque and mid-range power...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: $152.96Was: $169.95 -
On Sale
S&S CYCLE Wrist Pin Circlips - 4 pack 106-2304
S&S CYCLE
MSRP: $7.95Now: $7.16Was: $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 damage—S&S Cycle's precision-engineered design ensures...09105262- SKU:
- 09105262
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- CIRCLIP
- UNITS:
- 4 PACK
- RIDING STYLE:
- STREET
MSRP: $7.95Now: $7.16Was: $7.95 -
On Sale
S&S CYCLE Piston Kit 106-0432
S&S CYCLE
MSRP: $481.95Now: $433.76Was: $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 cast flat-top design delivers a solid 10.3:1...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: $433.76Was: $481.95Qty in Cart: 0Quantity:Price:MSRP: $481.95Now: $433.76Was: $481.95Subtotal: -
On Sale
S&S CYCLE Piston Kit 92-1211
S&S CYCLE
MSRP: $546.95Now: $492.26Was: $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 piston kit delivers the precision fitment and durability...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: $492.26Was: $546.95 -
On Sale
S&S CYCLE Piston Kit 92-1212
S&S CYCLE
MSRP: $546.95Now: $492.26Was: $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 purpose-built for the S&S 106" stroker kit with 4-1/2"...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: $492.26Was: $546.95 -
On Sale
S&S CYCLE Replacement Pistons with Rings 92-2027
S&S CYCLE
MSRP: $469.95Now: $422.96Was: $469.95Upgrading 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 airflow and valve lift that S&S heads deliver, ensuring...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: $469.95Now: $422.96Was: $469.95 -
On Sale
S&S CYCLE Replacement Pistons with Rings 92-2028
S&S CYCLE
MSRP: $479.95Now: $431.96Was: $479.95If 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 ratio and durability you need when pairing with S&S...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: $479.95Now: $431.96Was: $479.95 -
On Sale
S&S CYCLE Piston Kit 92-2016
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $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 10.3:1 compression ratio. This cast flat-top design is...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: $436.46Was: $484.95 -
On Sale
S&S CYCLE Piston Kit 92-2017
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $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 improvements without requiring complete engine redesign...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: $436.46Was: $484.95 -
On Sale
S&S CYCLE Replacement Pistons with Rings 92-2026
S&S CYCLE
MSRP: $484.95Now: $436.46Was: $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 delivers the power gains your upgraded heads are...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: $436.46Was: $484.95 -
On Sale
S&S CYCLE Replacement Pistons with Rings 92-20265
S&S CYCLE
MSRP: $469.95Now: $422.96Was: $469.95Whether 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 reliability. These 10:1 ratio pistons are engineered to...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: $469.95Now: $422.96Was: $469.95 -
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 offset pin geometry to reduce friction, improve ring...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
$234.43If 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 a mediocre one. These diamond-machined forgings allow...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
$234.43Qty in Cart: 0Quantity:Price:$234.43Subtotal: -
KB PERFORMANCE Super-Duty Piston KB661LCA.010
KB PERFORMANCE
$390.86Ring 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 micro-welding, and installation guesswork—through...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
$390.86Qty in Cart: 0Quantity:Price:$390.86Subtotal: -
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 delivery. Built from 4032 aluminum alloy and engineered with...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
$285.57 -
KB PERFORMANCE Piston - Evolution KB921C.010
KB PERFORMANCE
$285.57KB 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. Forged from 4032 aluminum alloy and engineered with an...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
$285.57Qty in Cart: 0Quantity:Price:$285.57Subtotal: -
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 paired with matching rings, pins, and gaskets for a...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.
