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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
  • On Sale
    S&S CYCLE Cylinder - Evolution 91-7210

    S&S CYCLE Cylinder - Evolution 91-7210

    S&S CYCLE

    MSRP: $840.95
    Now: $734.36
    Was: $840.95
    Stock replacement cylinders, 3.5" bore with cast-iron liner, For 80" or 89" engines, Made in the U.S.A.
    DS750539
    SKU:
    DS750539
    Availability:
    Ships Same Business Day
    Weight:
    27.65 LBS
    BORE SIZE IMPERIAL:
    3.500'
    DISPLACEMENT:
    80'
    STYLE:
    EVOLUTION
    UNITS:
    PAIR
    COLOR/FINISH:
    NATURAL ALUMINUM
    PRODUCT NAME:
    CYLINDER
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    TYPE:
    ENGINE
    MSRP: $840.95
    Now: $734.36
    Was: $840.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $840.95
    Now: $734.36
    Was: $840.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinder and Piston Kit 910-0199

    S&S CYCLE Cylinder and Piston Kit 910-0199

    S&S CYCLE

    MSRP: $1,313.95
    Now: $1,147.46
    Was: $1,313.95
    103" stock motors or motors with factory 95" kits require piston kit only; stock or S&S cylinder heads can be used, Made in the U.S.A., Fuel-injected motors will require recalibration of the fuel-injection system., This project requires a skilled...
    09310431
    SKU:
    09310431
    Availability:
    Ships Same Business Day
    Weight:
    26.02 LBS
    COLOR/FINISH:
    SILVER
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    DISPLACEMENT:
    106'
    TYPE:
    REPLACEMENT
    UNITS:
    KIT
    STROKE LENGTH IMPERIAL:
    4-1/2'
    STYLE:
    BIG BORE
    BORE SIZE IMPERIAL:
    3.875'
    COLOR/FINISH:
    POWDER-COATED
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    CYLINDER AND PISTON KIT
    MSRP: $1,313.95
    Now: $1,147.46
    Was: $1,313.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,313.95
    Now: $1,147.46
    Was: $1,313.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinder Kit - Twin Cam 910-0206

    S&S CYCLE Cylinder Kit - Twin Cam 910-0206

    S&S CYCLE

    MSRP: $1,287.95
    Now: $1,124.96
    Was: $1,287.95
    The Big Bore kit yields excellent results with stock cylinder heads, Easy installation: no need to bore or split existing cases, just swap the cylinders, Cylinders are constructed from premium aluminum castings with cast-in iron liners, Kits include...
    09310434
    SKU:
    09310434
    Availability:
    Ships Same Business Day
    Weight:
    26.00 LBS
    COLOR/FINISH:
    BLACK
    DISPLACEMENT:
    106'
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    PRODUCT NAME:
    CYLINDER KIT
    RIDING STYLE:
    STREET
    STYLE:
    BIG BORE
    BORE SIZE IMPERIAL:
    3.927'
    MATERIAL:
    ALUMINUM
    STROKE LENGTH IMPERIAL:
    4-3/8'
    MSRP: $1,287.95
    Now: $1,124.96
    Was: $1,287.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,287.95
    Now: $1,124.96
    Was: $1,287.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinder Kit - Twin Cam 910-0202

    S&S CYCLE Cylinder Kit - Twin Cam 910-0202

    S&S CYCLE

    MSRP: $1,219.95
    Now: $1,065.56
    Was: $1,219.95
    The Big Bore kit yields excellent results with stock cylinder heads, Easy installation: no need to bore or split existing cases, just swap the cylinders, Cylinders are constructed from premium aluminum castings with cast-in iron liners, Kits include...
    09310435
    SKU:
    09310435
    Availability:
    Ships Same Business Day
    Weight:
    25.84 LBS
    BORE SIZE IMPERIAL:
    3.927'
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-3/8'
    DISPLACEMENT:
    106'
    COLOR/FINISH:
    SILVER
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    PRODUCT NAME:
    CYLINDER KIT
    STYLE:
    BIG BORE
    UNITS:
    KIT
    MSRP: $1,219.95
    Now: $1,065.56
    Was: $1,219.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,219.95
    Now: $1,065.56
    Was: $1,219.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinder Kit - Twin Cam 910-0474

    S&S CYCLE Cylinder Kit - Twin Cam 910-0474

    S&S CYCLE

    MSRP: $1,643.95
    Now: $1,436.36
    Was: $1,643.95
    The Big Bore kit yields excellent results with stock cylinder heads, Easy installation: no need to bore or split existing cases, just swap the cylinders, Cylinders are constructed from premium aluminum castings with cast-in iron liners, Kits include...
    09310538
    SKU:
    09310538
    Availability:
    Ships Same Business Day
    Weight:
    24.26 LBS
    COLOR/FINISH:
    GRAY
    DISPLACEMENT:
    117'
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    10.9:1
    PRODUCT NAME:
    CYLINDER KIT
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-3/8'
    BORE SIZE IMPERIAL:
    4.125'
    MATERIAL:
    ALUMINUM
    STYLE:
    BIG BORE
    MSRP: $1,643.95
    Now: $1,436.36
    Was: $1,643.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,643.95
    Now: $1,436.36
    Was: $1,643.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinder Kit - Twin Cam 910-0469

    S&S CYCLE Cylinder Kit - Twin Cam 910-0469

    S&S CYCLE

    MSRP: $1,643.95
    Now: $1,511.96
    Was: $1,643.95
    The Big Bore kit yields excellent results with stock cylinder heads, Easy installation: no need to bore or split existing cases, just swap the cylinders, Cylinders are constructed from premium aluminum castings with cast-in iron liners, Kits include...
    09310540
    SKU:
    09310540
    Availability:
    Ships Same Business Day
    Weight:
    24.58 LBS
    PRODUCT NAME:
    CYLINDER KIT
    RIDING STYLE:
    STREET
    STYLE:
    BIG BORE
    COLOR/FINISH:
    GRAY
    COMPRESSION RATIO IMPERIAL:
    11.4:1
    STROKE LENGTH IMPERIAL:
    4-5/8'
    UNITS:
    KIT
    DISPLACEMENT:
    124'
    BORE SIZE IMPERIAL:
    4.125'
    MATERIAL:
    ALUMINUM
    MSRP: $1,643.95
    Now: $1,511.96
    Was: $1,643.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,643.95
    Now: $1,511.96
    Was: $1,643.95
    Subtotal:
  • S&S CYCLE Cylinders - 4.125" - Black 910-0401

    S&S CYCLE Cylinders - 4.125" - Black 910-0401

    S&S CYCLE

    $953.06
    Cylinders have a stock bolt pattern, Bored slightly under nominal size and are not honed, Designed for 124" Hot Set Up Kits used in '99-'17 Twin Cams, Wrinkle black finish with machined edges, Requires crankcase machining., Made in the U.S.A.
    09310687
    SKU:
    09310687
    Availability:
    Ships Same Business Day
    Weight:
    21.70 LBS
    PRODUCT NAME:
    CYLINDER KIT
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-5/8'
    UNITS:
    PAIR
    BORE SIZE IMPERIAL:
    4.125'
    COLOR/FINISH:
    BLACK
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    $953.06
    Qty in Cart: 0
    Quantity:
    Price:
    $953.06
    Subtotal:
  • On Sale
    S&S CYCLE 96" Big Bore Kit 91-7702

    S&S CYCLE 96" Big Bore Kit 91-7702

    S&S CYCLE

    MSRP: $1,489.95
    Now: $1,301.36
    Was: $1,489.95
    Cylinders are constructed from premium aluminum castings with cast-in iron liners, Kits include cylinders, pistons, rings and gaskets (head, base and exhaust), Black powder-coat finish, Made in the U.S.A., This project requires a skilled technician. It...
    09310670
    SKU:
    09310670
    Availability:
    Ships Same Business Day
    Weight:
    25.80 LBS
    COLOR/FINISH:
    BLACK
    MATERIAL:
    ALUMINUM
    COLOR/FINISH:
    POWDER-COATED
    COMPRESSION RATIO IMPERIAL:
    9.75:1
    BORE SIZE IMPERIAL:
    3.625'
    DISPLACEMENT:
    96'
    MATERIAL:
    CAST
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    BIG BORE CYLINDER KIT
    STROKE LENGTH IMPERIAL:
    4-5/8'
    STYLE:
    BIG BORE
    UNITS:
    KIT
    MSRP: $1,489.95
    Now: $1,301.36
    Was: $1,489.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,489.95
    Now: $1,301.36
    Was: $1,489.95
    Subtotal:
  • On Sale
    S&S CYCLE Cylinder Kit - 100" - Black 910-0646

    S&S CYCLE Cylinder Kit - 100" - Black 910-0646

    S&S CYCLE

    MSRP: $1,540.95
    Now: $1,395.86
    Was: $1,540.95
    Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frame, Cast Ductile Iron Sleeve in cast aluminum for superior heat transfer, 88" engines are boosted to 100", 96" and 103" engines are boosted...
    09310740
    SKU:
    09310740
    Availability:
    Ships Same Business Day
    Weight:
    22.11 LBS
    DISPLACEMENT:
    100'
    UNITS:
    KIT
    MODEL:
    SIDEWINDER
    PRODUCT NAME:
    CYLINDER AND PISTON KIT
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4'
    TYPE:
    BIG BORE
    BORE SIZE IMPERIAL:
    4.000'
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    COLOR/FINISH:
    BLACK
    MSRP: $1,540.95
    Now: $1,395.86
    Was: $1,540.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,540.95
    Now: $1,395.86
    Was: $1,540.95
    Subtotal:
  • S&S CYCLE Cylinder Kit - Twin Cam 910-0221

    S&S CYCLE Cylinder Kit - Twin Cam 910-0221

    S&S CYCLE

    $1,643.95
    The Big Bore kit yields excellent results with stock cylinder heads, Easy installation: no need to bore or split existing cases, just swap the cylinders, Cylinders are constructed from premium aluminum castings with cast-in iron liners, Kits include...
    09310539
    SKU:
    09310539
    Availability:
    Ships Same Business Day
    Weight:
    24.10 LBS
    BORE SIZE IMPERIAL:
    4.125'
    COMPRESSION RATIO IMPERIAL:
    10.9:1
    MATERIAL:
    ALUMINUM
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-3/8'
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    CYLINDER KIT
    STYLE:
    BIG BORE
    UNITS:
    KIT
    DISPLACEMENT:
    117'
    $1,643.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,643.95
    Subtotal:
  • S&S CYCLE Cylinder Kit - 110" - Black 910-0651

    S&S CYCLE Cylinder Kit - 110" - Black 910-0651

    S&S CYCLE

    $1,540.95
    Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frame, Cast Ductile Iron Sleeve in cast aluminum for superior heat transfer, 88" engines are boosted to 100", 96" and 103" engines are boosted...
    09310742
    SKU:
    09310742
    Availability:
    Ships Same Business Day
    Weight:
    26.91 LBS
    COLOR/FINISH:
    BLACK
    DISPLACEMENT:
    110'
    MODEL:
    SIDEWINDER
    PRODUCT NAME:
    CYLINDER AND PISTON KIT
    STROKE LENGTH IMPERIAL:
    4-3/8'
    BORE SIZE IMPERIAL:
    4.000'
    COMPRESSION RATIO IMPERIAL:
    10.5:1
    RIDING STYLE:
    STREET
    TYPE:
    BIG BORE
    UNITS:
    KIT
    $1,540.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,540.95
    Subtotal:
  • S&S CYCLE Cylinder Kit - M8 910-0685

    S&S CYCLE Cylinder Kit - M8 910-0685

    S&S CYCLE

    $1,561.95
    The Big Bore kit yields excellent results with stock cylinder heads, Easy installation: no need to bore or split existing cases, just swap the cylinders, Cylinders are constructed from premium aluminum castings with cast-in iron liners, Kits include...
    09310835
    SKU:
    09310835
    Availability:
    Ships Same Business Day
    Weight:
    29.01 LBS
    DISPLACEMENT:
    128'
    COMPRESSION RATIO IMPERIAL:
    11.0:1
    MATERIAL:
    IRON
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    4.250'
    COLOR/FINISH:
    BLACK
    PRODUCT NAME:
    CYLINDER KIT
    STROKE LENGTH IMPERIAL:
    4-1/2'
    STYLE:
    BIG BORE
    UNITS:
    KIT
    $1,561.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,561.95
    Subtotal:
  • S&S CYCLE Cylinders - 4.125" - Black 910-0255

    S&S CYCLE Cylinders - 4.125" - Black 910-0255

    S&S CYCLE

    $924.95
    Cylinders have a stock bolt pattern, Bored slightly under nominal size and are not honed, Designed for 124" Hot Set Up Kits used in '99-'17 Twin Cams, Wrinkle black finish with machined edges, Requires crankcase machining., Made in the U.S.A.
    09031294
    SKU:
    09031294
    Availability:
    Ships Same Business Day
    Weight:
    22.00 LBS
    MATERIAL:
    ALUMINUM
    PRODUCT NAME:
    CYLINDER KIT
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    4.125'
    COLOR/FINISH:
    BLACK
    COLOR/FINISH:
    POWDER-COATED
    STROKE LENGTH IMPERIAL:
    4-5/8'
    UNITS:
    PAIR
    Qty in Cart: 0
    Quantity:
    Price:
    $924.95
    Subtotal:
  • S&S CYCLE Cylinder Kit - 883-1200 910-0688

    S&S CYCLE Cylinder Kit - 883-1200 910-0688

    S&S CYCLE

    $1,128.95
    Increase displacement from 883cc to 1200cc, Saves time because pistons are already fit to the cylinders - ready to assemble out of the box, Cylinders are constructed from premium aluminum castings with cast-in iron liners, No machining, No re-balancing...
    09030944
    SKU:
    09030944
    Availability:
    Ships Same Business Day
    Weight:
    23.36 LBS
    DISPLACEMENT:
    1200 CC
    MATERIAL:
    CAST
    PRODUCT NAME:
    CONVERSION KIT
    COLOR/FINISH:
    SILVER
    COMPRESSION RATIO IMPERIAL:
    9.4:1
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    3.500'
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    ALUMINUM
    MATERIAL:
    IRON
    RIDING STYLE:
    STREET
    STYLE:
    BIG BORE
    $1,128.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,128.95
    Subtotal:
  • S&S CYCLE Cylinder Kit - 883-1200 910-0687

    S&S CYCLE Cylinder Kit - 883-1200 910-0687

    S&S CYCLE

    $1,128.95
    Increase displacement from 883cc to 1200cc, Saves time because pistons are already fit to the cylinders - ready to assemble out of the box, Cylinders are constructed from premium aluminum castings with cast-in iron liners, No machining, No re-balancing...
    09030945
    SKU:
    09030945
    Availability:
    Ships Same Business Day
    Weight:
    23.25 LBS
    DISPLACEMENT:
    1200 CC
    MATERIAL:
    ALUMINUM
    BORE SIZE IMPERIAL:
    3.500'
    COLOR/FINISH:
    WRINKLE BLACK
    RIDING STYLE:
    STREET
    STYLE:
    BIG BORE
    UNITS:
    KIT
    COLOR/FINISH:
    POWDER-COATED
    MATERIAL:
    IRON
    COMPRESSION RATIO IMPERIAL:
    9.4:1
    MATERIAL:
    CAST
    PRODUCT NAME:
    CONVERSION KIT
    $1,128.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,128.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit - 92" - Natural Silver RP201-218W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit - 92" - Natural Silver RP201-218W

    REVOLUTION PERFORMANCE, LLC

    $1,479.95
    Revolutionâ„¢ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores, which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps, and a longer lifespan, True bolt-on kit that...
    09311059
    SKU:
    09311059
    Availability:
    Ships Same Business Day
    Weight:
    21.01 LBS
    COLOR/FINISH:
    SILVER
    UNITS:
    KIT
    BORE SIZE IMPERIAL:
    3-9/16'
    PRODUCT NAME:
    BIG BORE CYLINDER KIT
    COMPRESSION RATIO IMPERIAL:
    10.3:1
    FEATURES:
    FLAT TOP
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-5/8'
    DISPLACEMENT:
    92'
    $1,479.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,479.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit - 92" - Black with Highlighted Fins RP201-220W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit - 92" - Black with Highlighted Fins RP201-220W

    REVOLUTION PERFORMANCE, LLC

    $1,479.95
    Revolutionâ„¢ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores, which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps, and a longer lifespan, True bolt-on kit that...
    09311060
    SKU:
    09311060
    Availability:
    Ships Same Business Day
    Weight:
    22.00 LBS
    COLOR/FINISH:
    BLACK
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-5/8'
    UNITS:
    KIT
    COMPRESSION RATIO IMPERIAL:
    10.3:1
    DISPLACEMENT:
    92'
    FEATURES:
    FLAT TOP
    BORE SIZE IMPERIAL:
    3-9/16'
    COLOR/FINISH:
    HIGHLIGHTED FINS
    PRODUCT NAME:
    BIG BORE CYLINDER KIT
    $1,479.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,479.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit - 100" - Natural Silver RP201-209W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit - 100" - Natural Silver RP201-209W

    REVOLUTION PERFORMANCE, LLC

    $1,499.95
    Revolutionâ„¢ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps and a longer lifespan, Monster power in a package...
    09311061
    SKU:
    09311061
    Availability:
    Ships Same Business Day
    Weight:
    19.31 LBS
    UNITS:
    KIT
    DISPLACEMENT:
    100'
    BORE SIZE IMPERIAL:
    3-7/8'
    COLOR/FINISH:
    SILVER
    PRODUCT NAME:
    BIG BORE CYLINDER KIT
    COMPRESSION RATIO IMPERIAL:
    9.5:1
    MODEL:
    MONSTER
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-1/4'
    $1,499.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,499.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit - 100" - Black with Highlighted Fins RP201-210W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit - 100" - Black with Highlighted Fins RP201-210W

    REVOLUTION PERFORMANCE, LLC

    $1,499.95
    Revolutionâ„¢ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps and a longer lifespan, Monster power in a package...
    09311062
    SKU:
    09311062
    Availability:
    Ships Same Business Day
    Weight:
    19.56 LBS
    STROKE LENGTH IMPERIAL:
    4-1/4'
    UNITS:
    KIT
    DISPLACEMENT:
    100'
    MODEL:
    MONSTER
    COLOR/FINISH:
    BLACK
    COMPRESSION RATIO IMPERIAL:
    9.5:1
    RIDING STYLE:
    STREET
    BORE SIZE IMPERIAL:
    3-7/8'
    COLOR/FINISH:
    HIGHLIGHTED FINS
    PRODUCT NAME:
    BIG BORE CYLINDER KIT
    $1,499.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,499.95
    Subtotal:
  • REVOLUTION PERFORMANCE, LLC Cylinder Kit - 109" - Natural Silver RP201-215W

    REVOLUTION PERFORMANCE, LLC Cylinder Kit - 109" - Natural Silver RP201-215W

    REVOLUTION PERFORMANCE, LLC

    $1,499.95
    Revolutionâ„¢ aerospace-grade all-aluminum cylinders with nickel-silicon-carbide electroplated bores which means NO SLEEVING; allows larger bore sizes and less friction for more horsepower, lower temps and a longer lifespan, Monster power in a package...
    09311063
    SKU:
    09311063
    Availability:
    Ships Same Business Day
    Weight:
    20.21 LBS
    COLOR/FINISH:
    SILVER
    UNITS:
    KIT
    MODEL:
    MONSTER
    PRODUCT NAME:
    BIG BORE CYLINDER KIT
    BORE SIZE IMPERIAL:
    3-7/8'
    COMPRESSION RATIO IMPERIAL:
    10.0:1
    DISPLACEMENT:
    109'
    RIDING STYLE:
    STREET
    STROKE LENGTH IMPERIAL:
    4-5/8'
    $1,499.95
    Qty in Cart: 0
    Quantity:
    Price:
    $1,499.95
    Subtotal:
  • Total: items /

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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.

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