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Harley Cylinders and Parts

Harley Cylinders and Parts

Harley Cylinders and Parts

Harley Bike Cylinders & Parts at JJ Motorsports

Boost displacement and performance with premium cylinders and parts from JJ Motorsports, featuring big-bore kits, stud sets, and precision-machined cylinders for Sportster, Big Twin, Evo, and M8 engines. These high-quality components deliver reliable compression and perfect fit.

Shop Colony and Revolution Performance for proven durability. Explore related categories such as Harley engine for pistons and gaskets, or Harley for cams and heads to complete your big-bore build.

Top Harley Cylinders & Parts

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
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit - 109" - Black with Highlighted Fins RP201-216W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit - 109" - Black with Highlighted Fins RP201-216W

    REVOLUTION PERFORMANCE, LLC

    $1,455.95
    A 109" displacement demands cylinders engineered for serious power output—Revolution Performance delivers with aerospace-grade aluminum construction and nickel-silicon-carbide bores that eliminate the need for traditional sleeving, letting you push...
    09311064
    SKU:
    09311064
    Availability:
    Ships Same Business Day
    Weight:
    19.36 LBS
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    3-7/8'
    DISPLACEMENT:
    109'
    MODEL:
    MONSTER
    PRODUCT NAME:
    BIG BORE CYLINDER KIT
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-5/8'
    COLOR/FINISH:
    HIGHLIGHTED FINS
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    $1,455.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,455.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-404W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-404W

    REVOLUTION PERFORMANCE, LLC

    $1,343.95
    A quality cylinder kit is fundamental to any serious engine build or rebuild—it directly impacts compression, sealing integrity, and overall engine longevity. The Revolution Performance RP201-404W delivers precision-engineered components that meet tight...
    09311065
    SKU:
    09311065
    Availability:
    Ships Same Business Day
    Weight:
    18.06 LBS
    BORE SIZE IMPERIAL:
    3.5625'
    DISPLACEMENT:
    1250 CC
    PRODUCT NAME:
    CYLINDER KIT
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    NATURAL
    COMPRESSION RATIO IMPERIAL:
    11.0:1
    STROKE LENGTH IMPERIAL:
    3-13/16'
    UNITS:
    KIT
    $1,343.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,343.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-405W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-405W

    REVOLUTION PERFORMANCE, LLC

    $1,343.95
    A high-quality cylinder kit is essential for maintaining or upgrading your engine's core performance and reliability. The REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-405W delivers precision-engineered components that restore or enhance compression,...
    09311066
    SKU:
    09311066
    Availability:
    Ships Same Business Day
    Weight:
    18.16 LBS
    BORE SIZE IMPERIAL:
    3.5625'
    COLOR/FINISH:
    HIGHLIGHTED FINS
    COMPRESSION RATIO IMPERIAL:
    11.0:1
    DISPLACEMENT:
    1250 CC
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    CYLINDER KIT
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    3-13/16'
    UNITS:
    KIT
    $1,343.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,343.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-406W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-406W

    REVOLUTION PERFORMANCE, LLC

    $1,343.95
    REVOLUTION PERFORMANCE, LLC Cylinder Kit
    09311067
    SKU:
    09311067
    Availability:
    Ships Same Business Day
    Weight:
    18.16 LBS
    BORE SIZE IMPERIAL:
    3.5625'
    COMPRESSION RATIO IMPERIAL:
    11.0:1
    DISPLACEMENT:
    1250 CC
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    CYLINDER KIT
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    3-13/16'
    UNITS:
    KIT
    $1,343.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,343.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-414W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-414W

    REVOLUTION PERFORMANCE, LLC

    $1,343.95
    A quality cylinder kit is fundamental to building reliable engine performance, whether you're refreshing a worn powerplant or assembling a high-revving race engine. The Revolution Performance RP201-414W cylinder kit delivers precision-engineered...
    09311068
    SKU:
    09311068
    Availability:
    Ships Same Business Day
    Weight:
    17.96 LBS
    Qty in Cart: 0
    Quantity:
    Price:
    $1,343.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-411W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-411W

    REVOLUTION PERFORMANCE, LLC

    $1,479.95
    If you're serious about maximizing displacement and extracting real power gains, a precision cylinder kit is non-negotiable. The REVOLUTION PERFORMANCE, LLC Cylinder Kit RP201-411W delivers the bore and stroke geometry you need for measurable horsepower...
    09311072
    SKU:
    09311072
    Availability:
    Ships Same Business Day
    Weight:
    17.61 LBS
    $1,479.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,479.95
    Subtotal:
  • On Sale
    S&S CYCLE Big Bore Cylinder Set 910-0739

    S&S CYCLE Big Bore Cylinder Set 910-0739

    S&S CYCLE

    MSRP: $929.95
    Now: $873.86
    Was: $929.95
    The S&S Cycle Big Bore Cylinder Set delivers measurable displacement gains and combustion efficiency improvements for M8-powered machines. This bolt-on upgrade increases engine capacity without requiring complete engine teardown, making it an accessible...
    09310877
    SKU:
    09310877
    Availability:
    Ships Same Business Day
    Weight:
    25.70 LBS
    COLOR/FINISH:
    BLACK GRANITE
    STYLE:
    BIG BORE
    DISPLACEMENT:
    124'
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    4.250'
    COLOR/FINISH:
    HIGHLIGHTED FINS
    PRODUCT NAME:
    CYLINDER KIT
    UNITS:
    KIT
    MSRP: $929.95
    Now: $873.86
    Was: $929.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $929.95
    Now: $873.86
    Was: $929.95
    Subtotal:
  • DRAG SPECIALTIES Cylinder - Rear - 1200cc - 1966-1980 Shovelhead 750604-BX-LB2

    DRAG SPECIALTIES Cylinder - Rear - 1200cc - 1966-1980 Shovelhead 750604-BX-LB2

    DRAG SPECIALTIES

    $220.37
    If you're rebuilding or upgrading a classic Shovelhead, cylinder condition is non-negotiable—worn or stock cylinders will limit your engine's potential and reliability. These DRAG SPECIALTIES rear cylinders are cast-iron units engineered to OEM...
    DS750604
    SKU:
    DS750604
    Availability:
    Ships Same Business Day
    Weight:
    12.13 LBS
    MATERIAL:
    IRON
    PRODUCT NAME:
    CYLINDER
    UNITS:
    EACH
    BORE SIZE IMPERIAL:
    3.435'
    DISPLACEMENT:
    1200 CC
    COLOR/FINISH:
    BLACK
    TYPE:
    REAR
    MATERIAL:
    ALUMINUM
    MATERIAL:
    CAST
    RIDING STYLE:
    STREET
    $220.37
    Qty in Cart: 0
    Quantity:
    Price:
    $220.37
    Subtotal:
  • DRAG SPECIALTIES Cylinder - Front - 1200cc - 1966-1980 Shovelhead 750605-BX-LB2

    DRAG SPECIALTIES Cylinder - Front - 1200cc - 1966-1980 Shovelhead 750605-BX-LB2

    DRAG SPECIALTIES

    $198.74
    If you're running a 1966-1980 Shovelhead and want reliable power without compromise, this DRAG SPECIALTIES front cylinder delivers the thermal stability and pressure tolerance your engine needs. Cast-iron construction meets or exceeds OEM specs while...
    DS750605
    SKU:
    DS750605
    Availability:
    Ships Same Business Day
    Weight:
    11.63 LBS
    UNITS:
    EACH
    BORE SIZE IMPERIAL:
    3.435'
    DISPLACEMENT:
    1200 CC
    MATERIAL:
    ALUMINUM
    MATERIAL:
    CAST
    RIDING STYLE:
    STREET
    TYPE:
    FRONT
    COLOR/FINISH:
    BLACK
    MATERIAL:
    IRON
    PRODUCT NAME:
    CYLINDER
    Qty in Cart: 0
    Quantity:
    Price:
    $198.74
    Subtotal:
  • DRAG SPECIALTIES Cylinder - Rear - 74" - 1948-1965 Panhead 750606-BX-LB2

    DRAG SPECIALTIES Cylinder - Rear - 74" - 1948-1965 Panhead 750606-BX-LB2

    DRAG SPECIALTIES

    $198.74
    If you're running a vintage Panhead and pushing your engine beyond stock parameters, OEM cylinders become a liability. This DRAG SPECIALTIES rear cylinder is cast-iron construction engineered to meet or exceed original tolerance specifications while...
    DS750606
    SKU:
    DS750606
    Availability:
    Ships Same Business Day
    Weight:
    11.63 LBS
    DISPLACEMENT:
    74'
    MATERIAL:
    IRON
    PRODUCT NAME:
    CYLINDER
    UNITS:
    EACH
    COLOR/FINISH:
    BLACK
    TYPE:
    REAR
    BORE SIZE IMPERIAL:
    3.435'
    MATERIAL:
    ALUMINUM
    MATERIAL:
    CAST
    RIDING STYLE:
    STREET
    $198.74
    Qty in Cart: 0
    Quantity:
    Price:
    $198.74
    Subtotal:
  • DRAG SPECIALTIES Cylinder - Front - 74" - 1948-1965 Panhead 750607-BX-LB2

    DRAG SPECIALTIES Cylinder - Front - 74" - 1948-1965 Panhead 750607-BX-LB2

    DRAG SPECIALTIES

    $198.74
    If you're running a classic Panhead and want to push beyond stock performance limits, upgrading to quality cylinders is non-negotiable. The DRAG SPECIALTIES front cylinder delivers the durability and heat resistance necessary for sustained...
    DS750607
    SKU:
    DS750607
    Availability:
    Ships Same Business Day
    Weight:
    11.81 LBS
    DISPLACEMENT:
    74'
    MATERIAL:
    IRON
    PRODUCT NAME:
    CYLINDER
    UNITS:
    EACH
    COLOR/FINISH:
    BLACK
    TYPE:
    FRONT
    BORE SIZE IMPERIAL:
    3.435'
    MATERIAL:
    ALUMINUM
    MATERIAL:
    CAST
    RIDING STYLE:
    STREET
    $198.74
    Qty in Cart: 0
    Quantity:
    Price:
    $198.74
    Subtotal:
  • DRAG SPECIALTIES Cylinder - Natural - 1986-2003 1200XL 16447-88-LB2

    DRAG SPECIALTIES Cylinder - Natural - 1986-2003 1200XL 16447-88-LB2

    DRAG SPECIALTIES

    $257.45
    Whether you're rebuilding a tired 1200XL or upgrading from an 883, these Drag Specialties cylinders deliver the displacement increase you need without compromising reliability. The ductile cast-iron sleeves bonded to aluminum castings provide superior...
    DS750506
    SKU:
    DS750506
    Availability:
    Ships Same Business Day
    Weight:
    6.94 LBS
    TYPE:
    REAR
    MATERIAL:
    IRON
    PRODUCT NAME:
    CYLINDER
    UNITS:
    EACH
    BORE SIZE IMPERIAL:
    3.498'
    DISPLACEMENT:
    1200 CC
    COLOR/FINISH:
    ALUMINUM
    MATERIAL:
    ALUMINUM
    MATERIAL:
    CAST
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    3-13/16'
    TYPE:
    FRONT
    $257.45
    Qty in Cart: 0
    Quantity:
    Price:
    $257.45
    Subtotal:
  • DRAG SPECIALTIES Cylinder - 1200cc- 1988-2003 - XL - Black 09310018BLK-LB2

    DRAG SPECIALTIES Cylinder - 1200cc- 1988-2003 - XL - Black 09310018BLK-LB2

    DRAG SPECIALTIES

    $295.56
    If you're running an 883cc Harley and ready to step up displacement without a complete engine rebuild, these 1200cc cylinders deliver the straightforward path to more cubic inches. The ductile iron sleeves are precision-cast into aluminum, then finished...
    09310018
    SKU:
    09310018
    Availability:
    Ships Same Business Day
    Weight:
    7.29 LBS
    DISPLACEMENT:
    1200 CC
    MATERIAL:
    CAST
    PRODUCT NAME:
    CYLINDER
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    3.500'
    COLOR/FINISH:
    HIGHLIGHTED FINS
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    MATERIAL:
    IRON
    UNITS:
    EACH
    $295.56
    Qty in Cart: 0
    Quantity:
    Price:
    $295.56
    Subtotal:
  • DRAG SPECIALTIES Cylinder - 1340cc - 1984-1999 Big Twin 16510-83A-LB2

    DRAG SPECIALTIES Cylinder - 1340cc - 1984-1999 Big Twin 16510-83A-LB2

    DRAG SPECIALTIES

    $247.15
    If your 1340cc Big Twin is experiencing cylinder wear, scoring, or damage, a factory-spec replacement is the most reliable path to restored compression and consistent performance. DRAG SPECIALTIES cylinders are engineered for direct fitment on 1984-1999...
    DS750507
    SKU:
    DS750507
    Availability:
    Ships Same Business Day
    Weight:
    8.44 LBS
    BORE SIZE IMPERIAL:
    3.498'
    DISPLACEMENT:
    1340 CC
    STROKE LENGTH IMPERIAL:
    4-1/4'
    TYPE:
    REAR
    MATERIAL:
    ALUMINUM
    MATERIAL:
    CAST
    MATERIAL:
    IRON
    COLOR/FINISH:
    ALUMINUM
    PRODUCT NAME:
    CYLINDER
    RIDING STYLE:
    STREET
    TYPE:
    FRONT
    UNITS:
    EACH
    $247.15
    Qty in Cart: 0
    Quantity:
    Price:
    $247.15
    Subtotal:
  • DRAG SPECIALTIES Cylinder - 1340cc - 1984-1999 Evolution - Black 09310017BLK

    DRAG SPECIALTIES Cylinder - 1340cc - 1984-1999 Evolution - Black 09310017BLK

    DRAG SPECIALTIES

    $325.43
    If your Evolution engine is showing signs of wear or you're rebuilding from the ground up, factory-spec replacement cylinders are essential to restoring reliable power and proper ring sealing. Drag Specialties cylinders feature ductile cast-iron sleeves...
    09310017
    SKU:
    09310017
    Availability:
    Ships Same Business Day
    Weight:
    8.41 LBS
    MATERIAL:
    CAST
    PRODUCT NAME:
    CYLINDER
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    3.500'
    COLOR/FINISH:
    HIGHLIGHTED FINS
    COLOR/FINISH:
    ALUMINUM
    COLOR/FINISH:
    BLACK
    DISPLACEMENT:
    1340 CC
    MATERIAL:
    ALUMINUM
    MATERIAL:
    IRON
    UNITS:
    EACH
    $325.43
    Qty in Cart: 0
    Quantity:
    Price:
    $325.43
    Subtotal:
  • On Sale
    S&S CYCLE Cylinder Kit 910-0690

    S&S CYCLE Cylinder Kit 910-0690

    S&S CYCLE

    MSRP: $1,077.95
    Now: $970.16
    Was: $1,077.95
    If you're building a high-displacement Harley engine and need reliable, precision-engineered internals, the S&S Cycle 1250cc Cylinder Kit delivers the bore and piston combination that serious builders trust. This complete kit eliminates the guesswork of...
    09310529
    SKU:
    09310529
    Availability:
    Ships Same Business Day
    Weight:
    22.95 LBS
    COLOR/FINISH:
    SILVER
    COMPRESSION RATIO IMPERIAL:
    11.2:1
    MATERIAL:
    ALUMINUM
    MATERIAL:
    IRON
    STYLE:
    BIG BORE
    BORE SIZE IMPERIAL:
    3.562'
    DISPLACEMENT:
    1250 CC
    MATERIAL:
    CAST
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    3-13/16'
    PRODUCT NAME:
    CYLINDER KIT
    TYPE:
    DOMED
    UNITS:
    KIT
    MSRP: $1,077.95
    Now: $970.16
    Was: $1,077.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,077.95
    Now: $970.16
    Was: $1,077.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinders - 4.25" - M8 - Black 910-0683

    S&S CYCLE Cylinders - 4.25" - M8 - Black 910-0683

    S&S CYCLE

    MSRP: $929.95
    Now: $873.86
    Was: $929.95
    If you're running a 4.375" stroke big-twin, displacement is everything—and these S&S Cycle cylinders deliver the bore you need for serious power gains. A bolt-on solution that transforms your engine's potential without requiring extensive machine work,...
    09310837
    SKU:
    09310837
    Availability:
    Ships Same Business Day
    Weight:
    26.61 LBS
    BORE SIZE IMPERIAL:
    4.250'
    COLOR/FINISH:
    NON-HIGHLIGHTED FINS
    PRODUCT NAME:
    CYLINDER
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    WRINKLE BLACK
    STYLE:
    BIG BORE
    UNITS:
    PAIR
    MSRP: $929.95
    Now: $873.86
    Was: $929.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $929.95
    Now: $873.86
    Was: $929.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinders and Pistons - 80" - Low Compression 91-9024

    S&S CYCLE Cylinders and Pistons - 80" - Low Compression 91-9024

    S&S CYCLE

    MSRP: $1,995.95
    Now: $1,796.36
    Was: $1,995.95
    If you're rebuilding a 80" Shovelhead and need to maintain reliable stock compression without sacrificing durability, S&S Cycle's cylinder and piston kit delivers the precision engineering your engine demands. This complete assembly eliminates the...
    09310688
    SKU:
    09310688
    Availability:
    Ships Same Business Day
    Weight:
    33.00 LBS
    MATERIAL:
    CAST IRON
    PRODUCT NAME:
    CYLINDER AND PISTON KIT
    COLOR/FINISH:
    POWDER-COATED
    STROKE LENGTH IMPERIAL:
    4-1/4'
    BORE SIZE IMPERIAL:
    3.500'
    COMPRESSION RATIO IMPERIAL:
    8.0:1
    STYLE:
    STOCK
    UNITS:
    KIT
    DISPLACEMENT:
    80'
    RIDING STYLE:
    STREET
    TYPE:
    REPLACEMENT
    MSRP: $1,995.95
    Now: $1,796.36
    Was: $1,995.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,995.95
    Now: $1,796.36
    Was: $1,995.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinder/Piston Kit - Natural 910-0179

    S&S CYCLE Cylinder/Piston Kit - Natural 910-0179

    S&S CYCLE

    MSRP: $1,155.95
    Now: $1,040.36
    Was: $1,155.95
    S&S Cycle cylinder and piston kits deliver the displacement increase your engine needs to unlock serious power gains without requiring a complete engine rebuild. The 3-1/2" bore design is engineered to work seamlessly with stock heads or S&S Performance...
    09310737
    SKU:
    09310737
    Availability:
    Ships Same Business Day
    Weight:
    27.65 LBS
    STROKE LENGTH IMPERIAL:
    4.250'
    PRODUCT NAME:
    CYLINDER AND PISTON KIT
    COMPRESSION RATIO IMPERIAL:
    8.8:1
    DISPLACEMENT:
    80'
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    3.500'
    COLOR/FINISH:
    NATURAL ALUMINUM
    UNITS:
    KIT
    MSRP: $1,155.95
    Now: $1,040.36
    Was: $1,155.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,155.95
    Now: $1,040.36
    Was: $1,155.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinder/Piston Kit - Black 910-0182

    S&S CYCLE Cylinder/Piston Kit - Black 910-0182

    S&S CYCLE

    MSRP: $1,231.95
    Now: $1,108.76
    Was: $1,231.95
    If you're serious about big-inch performance on a Harley platform, you need a cylinder and piston kit engineered for reliability at elevation. The S&S CYCLE 80" kit delivers the displacement and compression you need without sacrificing durability—these...
    09310738
    SKU:
    09310738
    Availability:
    Ships Same Business Day
    Weight:
    27.71 LBS
    PRODUCT NAME:
    CYLINDER AND PISTON KIT
    BORE SIZE IMPERIAL:
    3.500'
    COLOR/FINISH:
    WRINKLE BLACK
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    8.8:1
    DISPLACEMENT:
    80'
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4.250'
    MSRP: $1,231.95
    Now: $1,108.76
    Was: $1,231.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,231.95
    Now: $1,108.76
    Was: $1,231.95
    Subtotal:
  • Total: items /

Adding your products to cart

Buying Guide and FAQs

Buying Guide: Factors to Consider When Choosing Harley Bike Engine Cylinders and Parts

  • Compatibility: Ensure cylinders and parts match your Harley's engine type (e.g., Big Twin 1930-1984, Twin Cam, Sportster) and specifics like bore size (3.500" to 4.500") or stroke (4" to 4-5/8"). Use the vehicle selector for year-specific fits to avoid performance or rebuild issues.
  • Type of Use: For standard rebuilds, opt for stud sets for secure cylinder mounting; big-bore upgrades (85ci to 143ci) suit performance engines for increased horsepower and displacement in street or touring conditions.
  • Components and Upgrades: Select stud sets (4/8-pack) or big-bore kits with pistons; upgrade to no-sleeving cylinders with electroplated bores for friction reduction. Focus on compression ratios (9.0:1-11.3:1) and finishes (natural, silver, black, highlighted fins) for optimal performance.
  • Brand and Quality: Choose Colony for heat-treated stud sets in chrome/black, Revolution Performance LLC for aerospace-grade aluminum cylinder kits with nickel-silicon-carbide bores, or Eastern Motorcycle Parts for base studs. Prioritize USA-made quality for durability and lower engine temperatures.
  • Installation and Cost: Parts are bolt-on for easy DIY rebuilds; kits include pistons for complete upgrades. Prices range from $10.95 for stud packs to $1,899.95 for premium cylinder kits—factor in same-day shipping and free shipping over $99 for value.

Frequently Asked Questions (FAQs)

  1. What Harley models and engines do these cylinders and parts support? Parts support Big Twin (1930-1984), Twin Cam (e.g., 98ci to 101ci), Sportster (e.g., 1200cc to 128ci)—use the year/make/model filter for exact compatibility with bore/stroke specifics.
  2. How do big-bore cylinder kits improve performance? They increase displacement (e.g., 85ci to 143ci) and horsepower with no-sleeving electroplated bores for less friction, lower temps, and longer lifespan.
  3. What is typically included in a cylinder kit? Kits include cylinders, pistons (e.g., flat-top), with options for finishes like black with highlighted fins—check details for compression ratios (9.0:1-11.3:1).
  4. Are stud sets durable? Yes, heat-treated steel with chrome/black finishes provides high strength and perfect thread engagement for secure cylinder mounting.
  5. What if a part doesn't fit my Harley? Verify bore size, stroke, 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 pistons/rings, gaskets, or cams in the Harley engine category to complement your cylinders upgrade for a full rebuild.

Big Power, Nice Sound!

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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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