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Harley Piston and Ring Kits

Harley Piston and Ring Kits

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

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
  • Wiseco Piston Kit Standard 1988-2003 Harley-Davidson Sportster 1200 XLH K1660

    Wiseco Piston Kit Standard 1988-2003 Harley-Davidson Sportster 1200 XLH K1660

    WISECO

    $447.95
    When you're ready to rebuild your Sportster 1200's top end or push displacement through overboring, the Wiseco Piston Kit delivers the precision components and durability you need to do it right. Built from high-silicon aluminum alloy, these forged...
    K1660
    SKU:
    K1660
    Availability:
    Ships Same Business Day
    Weight:
    2.50 LBS
    BORE SIZE IMPERIAL:
    3.498'
    TYPE:
    TOP END
    UNITS:
    EACH
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    BORE - OVERSIZE:
    STANDARD
    BORE OVERSIZE - IMPERIAL:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    3-13/16'
    DISPLACEMENT:
    1200 CC
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    REBUILD KIT
    $447.95
    Qty in Cart: 0
    Quantity:
    Price:
    $447.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Piston Kit RP301-119W

    REVOLUTION PERFORMANCE, LLC Piston Kit RP301-119W

    REVOLUTION PERFORMANCE, LLC

    $529.95
    High-performance pistons demand precision engineering and materials built to withstand extreme combustion pressures and temperature swings. The Revolution Performance RP301-119W piston kit delivers the durability and reliability that professional racers...
    09106376
    SKU:
    09106376
    Availability:
    Ships Same Business Day
    Weight:
    2.95 LBS
    STROKE LENGTH IMPERIAL:
    4-3/8'
    DISPLACEMENT:
    117'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    COMPRESSION RATIO IMPERIAL:
    10.6:1
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    4.125'
    PISTON HEAD SHAPE:
    DISHED
    $529.95
    Qty in Cart: 0
    Quantity:
    Price:
    $529.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Piston Kit RP301-119WD

    REVOLUTION PERFORMANCE, LLC Piston Kit RP301-119WD

    REVOLUTION PERFORMANCE, LLC

    $529.95
    High-performance engine demands pistons engineered for reliability under extreme conditions. The Revolution Performance RP301-119WD delivers the strength and thermal stability required for sustained boost and high RPM operation, with precision...
    09106377
    SKU:
    09106377
    Availability:
    Ships Same Business Day
    Weight:
    3.05 LBS
    STROKE LENGTH IMPERIAL:
    4-3/8'
    UNITS:
    KIT
    DISPLACEMENT:
    117'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    4.125'
    COMPRESSION RATIO IMPERIAL:
    11.2:1
    PISTON HEAD SHAPE:
    DOMED
    $529.95
    Qty in Cart: 0
    Quantity:
    Price:
    $529.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Piston Kit RP301-111W

    REVOLUTION PERFORMANCE, LLC Piston Kit RP301-111W

    REVOLUTION PERFORMANCE, LLC

    $529.95
    High-performance pistons demand precision engineering and materials that can withstand extreme combustion pressures and temperature swings. The REVOLUTION PERFORMANCE RP301-111W Piston Kit delivers custom-forged construction with skirt coating and offset...
    09106378
    SKU:
    09106378
    Availability:
    Ships Same Business Day
    Weight:
    3.35 LBS
    STROKE LENGTH IMPERIAL:
    4-3/8'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    4.250'
    DISPLACEMENT:
    124'
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    11.2:1
    PISTON HEAD SHAPE:
    FLAT TOP
    $529.95
    Qty in Cart: 0
    Quantity:
    Price:
    $529.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Piston Kit RP301-113W

    REVOLUTION PERFORMANCE, LLC Piston Kit RP301-113W

    REVOLUTION PERFORMANCE, LLC

    $559.95
    When you're pushing your engine to the limit, stock pistons simply won't cut it. The Revolution Performance RP301-113W piston kit delivers the durability and precision needed to handle elevated boost pressures and sustained high-RPM operation without...
    09106379
    SKU:
    09106379
    Availability:
    Ships Same Business Day
    Weight:
    2.95 LBS
    BORE SIZE IMPERIAL:
    4.250'
    COMPRESSION RATIO IMPERIAL:
    11.4:1
    DISPLACEMENT:
    131'
    STROKE LENGTH IMPERIAL:
    4-5/8'
    UNITS:
    KIT
    PISTON HEAD SHAPE:
    FLAT TOP
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    PISTON KIT
    $559.95
    Qty in Cart: 0
    Quantity:
    Price:
    $559.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Piston Kit RP301-601W

    REVOLUTION PERFORMANCE, LLC Piston Kit RP301-601W

    REVOLUTION PERFORMANCE, LLC

    $499.95
    High-performance pistons demand precision engineering and superior materials to withstand extreme combustion pressures and temperature cycling. The REVOLUTION PERFORMANCE RP301-601W Piston Kit delivers custom-forged construction with low-expansion...
    09106380
    SKU:
    09106380
    Availability:
    Ships Same Business Day
    Weight:
    3.45 LBS
    COMPRESSION RATIO IMPERIAL:
    11.2:1
    UNITS:
    KIT
    DISPLACEMENT:
    124'
    PISTON HEAD SHAPE:
    FLAT TOP
    BORE SIZE IMPERIAL:
    4.250'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-3/8'
    $499.95
    Qty in Cart: 0
    Quantity:
    Price:
    $499.95
    Subtotal:
  • Wiseco 1996-2003 Harley-Davidson Sportster 1200 Custom XLC Piston Kit +0.010" K1661

    Wiseco 1996-2003 Harley-Davidson Sportster 1200 Custom XLC Piston Kit +0.010" K1661

    WISECO

    $409.95
    When you're ready to push your 1996-2003 Sportster 1200 past its factory limits, a quality piston kit is non-negotiable. The Wiseco K1661 delivers the precision fit and durability required for reliable overbore performance, while its high-silicon...
    09030145
    SKU:
    09030145
    Availability:
    Ships Same Business Day
    Weight:
    2.32 LBS
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    REBUILD KIT
    RIDING STYLE:
    STREET
    BORE OVERSIZE - IMPERIAL:
    +0.010'
    PISTON MATERIAL:
    ALUMINUM
    STROKE LENGTH IMPERIAL:
    3-13/16'
    UNITS:
    EACH
    BORE - OVERSIZE:
    +0,010'
    BORE SIZE IMPERIAL:
    3.508'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    TYPE:
    TOP END
    DISPLACEMENT:
    1200 CC
    Qty in Cart: 0
    Quantity:
    Price:
    $409.95
    Subtotal:
  • Wiseco Piston Kit with Gasket for Harley-Davidson 2006 Dyna Low Rider VT2709

    Wiseco Piston Kit with Gasket for Harley-Davidson 2006 Dyna Low Rider VT2709

    WISECO

    $716.95
    A top-end rebuild on your 2006 Dyna Low Rider demands pistons engineered for reliability and performance—Wiseco's high-silicon aluminum construction delivers exactly that, resisting detonation and thermal stress while maintaining ring seal integrity...
    09030787
    SKU:
    09030787
    Availability:
    Ships Same Business Day
    Weight:
    4.05 LBS
    BORE - OVERSIZE:
    STANDARD
    BORE OVERSIZE - IMPERIAL:
    STANDARD
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    REBUILD KIT
    UNITS:
    EACH
    PISTON MATERIAL:
    ALUMINUM
    STROKE LENGTH IMPERIAL:
    4'
    BORE SIZE IMPERIAL:
    3.875'
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    RIDING STYLE:
    STREET
    DISPLACEMENT:
    1546 CC
    TYPE:
    TOP END
    $716.95
    Qty in Cart: 0
    Quantity:
    Price:
    $716.95
    Subtotal:
  • Wiseco Piston Kit with Gasket for Harley-Davidson Softail Standard 2000-2006 VT2712

    Wiseco Piston Kit with Gasket for Harley-Davidson Softail Standard 2000-2006 VT2712

    WISECO

    $659.95
    When you're ready to refresh your Softail's top end or go larger with an overbore, you need pistons engineered to handle sustained high-RPM loads without compromise. The Wiseco VT2712 kit delivers the complete solution—forged pistons, rings, pins, and...
    09030790
    SKU:
    09030790
    Availability:
    Ships Same Business Day
    Weight:
    4.07 LBS
    PISTON MATERIAL:
    ALUMINUM
    TYPE:
    TOP END
    BORE SIZE IMPERIAL:
    3.875'
    DISPLACEMENT:
    1562 CC
    PISTON MATERIAL:
    FORGED
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    BORE OVERSIZE - IMPERIAL:
    +0.020'
    STROKE LENGTH IMPERIAL:
    4'
    BORE - OVERSIZE:
    +0,020'
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    PRODUCT NAME:
    REBUILD KIT
    $659.95
    Qty in Cart: 0
    Quantity:
    Price:
    $659.95
    Subtotal:
  • Wiseco Piston Kit 3.528in 10:1 Compression 1994-1998 Harley Davidson FLHR Road King K1668

    Wiseco Piston Kit 3.528in 10:1 Compression 1994-1998 Harley Davidson FLHR Road King K1668

    WISECO

    $447.95
    A top-end rebuild demands precision components that won't compromise reliability or power output. The Wiseco K1668 piston kit delivers the durability and material strength your Big Twin engine needs, whether you're freshening a worn motor or pushing...
    K1668
    SKU:
    K1668
    Availability:
    Ships Same Business Day
    Weight:
    2.56 LBS
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    REBUILD KIT
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    3.528'
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    PISTON MATERIAL:
    ALUMINUM
    BORE - OVERSIZE:
    +0,030'
    BORE OVERSIZE - IMPERIAL:
    +0.030'
    DISPLACEMENT:
    1361 CC
    STROKE LENGTH IMPERIAL:
    4-1/4'
    TYPE:
    TOP END
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $447.95
    Subtotal:
  • Wiseco Piston Kit 1994-1998 Harley-Davidson FLHR Road King K1669

    Wiseco Piston Kit 1994-1998 Harley-Davidson FLHR Road King K1669

    WISECO

    $409.95
    When you're ready to rebuild or overbore your Big Twin, a quality piston kit is the foundation of a reliable engine. The Wiseco K1669 delivers the durability and precision fit that serious riders expect, whether you're refreshing a stock build or pushing...
    K1669
    SKU:
    K1669
    Availability:
    Ships Same Business Day
    Weight:
    2.55 LBS
    BORE OVERSIZE - IMPERIAL:
    +0.040'
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    REBUILD KIT
    BORE - OVERSIZE:
    +0,040'
    DISPLACEMENT:
    1369 CC
    PISTON MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    3.538'
    STROKE LENGTH IMPERIAL:
    4-1/4'
    TYPE:
    TOP END
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $409.95
    Subtotal:
  • Wiseco Piston Kit Standard 1948-1964 Harley FL 1200cc K1605

    Wiseco Piston Kit Standard 1948-1964 Harley FL 1200cc K1605

    WISECO

    $382.95
    A complete top-end rebuild demands precision components that can handle sustained high RPM operation and thermal stress. The Wiseco Piston Kit delivers OEM-quality engineering with forged high-silicon aluminum construction, giving you the strength and...
    K1605
    SKU:
    K1605
    Availability:
    Ships Same Business Day
    Weight:
    3.25 LBS
    STROKE LENGTH IMPERIAL:
    3-31/32'
    TYPE:
    TOP END
    UNITS:
    EACH
    BORE - OVERSIZE:
    STANDARD
    BORE OVERSIZE - IMPERIAL:
    STANDARD
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    STREET
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    BORE SIZE IMPERIAL:
    3.437'
    DISPLACEMENT:
    1200 CC
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    REBUILD KIT
    $382.95
    Qty in Cart: 0
    Quantity:
    Price:
    $382.95
    Subtotal:
  • Wiseco Piston Kit 0.020 1948-1964 Harley FLH K1607

    Wiseco Piston Kit 0.020 1948-1964 Harley FLH K1607

    WISECO

    $378.95
    A worn or damaged piston kit compromises compression, throttle response, and overall engine reliability—especially critical if you're pushing higher boost levels or RPMs on your Big Twin. The Wiseco K1607 delivers the durability and precision fit you...
    K1607
    SKU:
    K1607
    Availability:
    Ships Same Business Day
    Weight:
    3.19 LBS
    BORE SIZE IMPERIAL:
    3.457'
    PISTON MATERIAL:
    ALUMINUM ALLOY
    TYPE:
    TOP END
    UNITS:
    EACH
    BORE OVERSIZE - IMPERIAL:
    +0.020'
    PISTON MATERIAL:
    FORGED
    STROKE LENGTH IMPERIAL:
    3-31/32'
    BORE - OVERSIZE:
    +0,020'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    DISPLACEMENT:
    1220 CC
    PRODUCT NAME:
    REBUILD KIT
    RIDING STYLE:
    STREET
    $378.95
    Qty in Cart: 0
    Quantity:
    Price:
    $378.95
    Subtotal:
  • Wiseco Piston Kit 1948-1980 Harley-Davidson FLH Electra Glide 9:1 Compression K1608

    Wiseco Piston Kit 1948-1980 Harley-Davidson FLH Electra Glide 9:1 Compression K1608

    WISECO

    $378.95
    A top-end rebuild demands precision components that can handle the demands of high-compression combustion cycles without compromise. Wiseco's forged piston kit delivers the strength and thermal stability required to support increased boost or aggressive...
    K1608
    SKU:
    K1608
    Availability:
    Ships Same Business Day
    Weight:
    3.31 LBS
    BORE OVERSIZE - IMPERIAL:
    +0.030'
    BORE SIZE IMPERIAL:
    3.467'
    PISTON MATERIAL:
    ALUMINUM ALLOY
    PRODUCT NAME:
    REBUILD KIT
    RIDING STYLE:
    STREET
    TYPE:
    TOP END
    UNITS:
    EACH
    DISPLACEMENT:
    1227 CC
    PISTON MATERIAL:
    FORGED
    STROKE LENGTH IMPERIAL:
    3-31/32'
    BORE - OVERSIZE:
    +0,030'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    $378.95
    Qty in Cart: 0
    Quantity:
    Price:
    $378.95
    Subtotal:
  • Wiseco Piston Kit 1948-1964 Harley-Davidson FL 0.040" Oversize K1609

    Wiseco Piston Kit 1948-1964 Harley-Davidson FL 0.040" Oversize K1609

    WISECO

    $378.95
    A worn or damaged piston can kill engine performance and reliability—especially on vintage Big Twin Harleys that demand precision. The Wiseco K1609 piston kit delivers a complete solution for overbore rebuilds, pairing forged pistons with matching rings,...
    K1609
    SKU:
    K1609
    Availability:
    Ships Same Business Day
    Weight:
    3.31 LBS
    PISTON MATERIAL:
    ALUMINUM ALLOY
    UNITS:
    EACH
    DISPLACEMENT:
    1234 CC
    PISTON MATERIAL:
    FORGED
    STROKE LENGTH IMPERIAL:
    3-31/32'
    BORE OVERSIZE - IMPERIAL:
    +0.040'
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    TOP END
    BORE - OVERSIZE:
    +0,040'
    BORE SIZE IMPERIAL:
    3.477'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    RIDING STYLE:
    STREET
    $378.95
    Qty in Cart: 0
    Quantity:
    Price:
    $378.95
    Subtotal:
  • Wiseco Piston Kit 1948-1980 Harley-Davidson Big Twin 74ci 9:1 Compression K1611

    Wiseco Piston Kit 1948-1980 Harley-Davidson Big Twin 74ci 9:1 Compression K1611

    WISECO

    $378.95
    If you're rebuilding or overboring a classic Big Twin, piston quality directly impacts reliability and power output. The Wiseco K1611 delivers forged construction and precision engineering specifically matched to 1948-1980 Harley applications,...
    K1611
    SKU:
    K1611
    Availability:
    Ships Same Business Day
    Weight:
    3.38 LBS
    BORE - OVERSIZE:
    +0,060'
    BORE SIZE IMPERIAL:
    3.497'
    DISPLACEMENT:
    1249 CC
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    REBUILD KIT
    RIDING STYLE:
    STREET
    BORE OVERSIZE - IMPERIAL:
    +0.060'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    PISTON MATERIAL:
    ALUMINUM ALLOY
    STROKE LENGTH IMPERIAL:
    3-31/32'
    TYPE:
    TOP END
    UNITS:
    EACH
    Qty in Cart: 0
    Quantity:
    Price:
    $378.95
    Subtotal:
  • Wiseco Piston Kit 1948-1980 Harley-Davidson FLH 3.517in. Bore K1612

    Wiseco Piston Kit 1948-1980 Harley-Davidson FLH 3.517in. Bore K1612

    WISECO

    $344.95
    If you're rebuilding a classic Big Twin top end or planning an overbore on your 1948-1980 Harley-Davidson FLH, the Wiseco K1612 piston kit delivers the forged strength and precision fit required for reliable, long-term performance. High-silicon aluminum...
    K1612
    SKU:
    K1612
    Availability:
    Ships Same Business Day
    Weight:
    3.44 LBS
    BORE SIZE IMPERIAL:
    3.517'
    DISPLACEMENT:
    1263 CC
    PISTON MATERIAL:
    FORGED
    PRODUCT NAME:
    REBUILD KIT
    BORE - OVERSIZE:
    +0,080'
    COMPRESSION RATIO IMPERIAL:
    9.0:1
    BORE OVERSIZE - IMPERIAL:
    +0.080'
    PISTON MATERIAL:
    ALUMINUM ALLOY
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    STROKE LENGTH IMPERIAL:
    3-31/32'
    TYPE:
    TOP END
    Qty in Cart: 0
    Quantity:
    Price:
    $344.95
    Subtotal:
  • Wiseco Piston Kit 1978-1984 Harley-Davidson FLH K1614

    Wiseco Piston Kit 1978-1984 Harley-Davidson FLH K1614

    WISECO

    $384.95
    A properly rebuilt top end is fundamental to reliable Big Twin performance, and this Wiseco kit delivers the precision components needed for a complete, professional-grade rebuild. Whether you're recovering from ring wear, overboring for increased...
    K1614
    SKU:
    K1614
    Availability:
    Ships Same Business Day
    Weight:
    2.81 LBS
    BORE OVERSIZE - IMPERIAL:
    +0.010'
    DISPLACEMENT:
    1345 CC
    RIDING STYLE:
    STREET
    BORE - OVERSIZE:
    +0,010'
    PISTON MATERIAL:
    FORGED
    COMPRESSION RATIO IMPERIAL:
    7.0:1
    PRODUCT NAME:
    REBUILD KIT
    STROKE LENGTH IMPERIAL:
    4-1/4'
    TYPE:
    TOP END
    UNITS:
    EACH
    BORE SIZE IMPERIAL:
    3.508'
    PISTON MATERIAL:
    ALUMINUM ALLOY
    $384.95
    Qty in Cart: 0
    Quantity:
    Price:
    $384.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Piston Kit RP301-600W

    REVOLUTION PERFORMANCE, LLC Piston Kit RP301-600W

    REVOLUTION PERFORMANCE, LLC

    $783.95
    Custom-forged pistons are the foundation of reliable high-RPM performance, and the REVOLUTION PERFORMANCE RP301-600W delivers the strength and precision needed to withstand extreme combustion pressures without sacrificing efficiency. Built with...
    09106382
    SKU:
    09106382
    Availability:
    Ships Same Business Day
    Weight:
    3.90 LBS
    COMPRESSION RATIO IMPERIAL:
    11.2:1
    PISTON HEAD SHAPE:
    FLAT TOP
    DISPLACEMENT:
    139'
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    4.500'
    STROKE LENGTH IMPERIAL:
    4-3/8'
    $783.95
    Qty in Cart: 0
    Quantity:
    Price:
    $783.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Piston Kit RP301-604W

    REVOLUTION PERFORMANCE, LLC Piston Kit RP301-604W

    REVOLUTION PERFORMANCE, LLC

    $783.95
    High-performance pistons are the foundation of reliable top-end power. Revolution Performance's RP301-604W kit delivers the thermal stability and strength needed to sustain aggressive boost pressures and extended high-RPM operation without sacrificing...
    09106383
    SKU:
    09106383
    Availability:
    Ships Same Business Day
    Weight:
    3.80 LBS
    DISPLACEMENT:
    143'
    PISTON HEAD SHAPE:
    FLAT TOP
    STROKE LENGTH IMPERIAL:
    4-1/2'
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    11.3:1
    PRODUCT NAME:
    PISTON KIT
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    4.500'
    Qty in Cart: 0
    Quantity:
    Price:
    $783.95
    Subtotal:
  • Total: items /

Adding your products to cart

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)

  1. 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.
  2. 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.
  3. 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.
  4. 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.
  5. 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.
  6. 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.

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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