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Big Bore Kits

Big Bore Kits

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  • On Sale
    Burly Brand - Black Brawler Kit fits M8 Softail Models Burly Brand - Black Brawler Kit fits M8 Softail Models

    Burly Brand - Black Brawler Kit fits M8 Softail Models

    Burly Brand

    $227.66 - $316.76
    Burly Brand - Black Brawler Kit fits M8 Softail Models Features: Designed to grind down during impacts to prevent bike from catching and flipping Functions as a highway bar for a secure grip and comfortable footrest on long rides Durable materials...
    $227.66 - $316.76
    Qty in Cart: 0
    Quantity:
    Price:
    $227.66 - $316.76
    Subtotal:
  • On Sale
    S&S Cycle - 136" Big Bore Cylinder Kit fits '17 & Up M8 Engines (Black) S&S Cycle - 136" Big Bore Cylinder Kit fits '17 & Up M8 Engines (Black Granite/Highlighted Fins)

    S&S Cycle - 136" Big Bore Cylinder Kit fits '17 & Up M8 Engines

    S&S Cycle

    MSRP: $1,599.95
    Now: $1,439.96
    Was: $1,599.95
    S&S Cycle - 136" Big Bore Cylinder Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power increase! It is compatible with stock crankcases,...
    MSRP: $1,599.95
    Now: $1,439.96
    Was: $1,599.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,599.95
    Now: $1,439.96
    Was: $1,599.95
    Subtotal:
  • On Sale
     S&S Cycle - Black Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads)

    S&S Cycle - Black Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads)

    S&S Cycle

    MSRP: $1,249.95
    Now: $1,124.96
    Was: $1,249.95
    S&S Cycle - Black Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder heads. It comes complete with cylinders, pistons,...
    MSRP: $1,249.95
    Now: $1,124.96
    Was: $1,249.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,249.95
    Now: $1,124.96
    Was: $1,249.95
    Subtotal:
  • On Sale
     S&S Cycle - Silver Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads)

    S&S Cycle - Silver Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads)

    S&S Cycle

    MSRP: $1,249.95
    Now: $1,124.96
    Was: $1,249.95
    S&S Cycle - Silver Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder heads. It comes complete with cylinders, pistons,...
    MSRP: $1,249.95
    Now: $1,124.96
    Was: $1,249.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,249.95
    Now: $1,124.96
    Was: $1,249.95
    Subtotal:
  • On Sale
     S&S Cycle - Stone Gray Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads)

    S&S Cycle - Stone Gray Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads)

    S&S Cycle

    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    S&S Cycle - Stone Gray Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder heads. It comes complete with cylinders,...
    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    Subtotal:
  • On Sale
     S&S Cycle - Black Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads)

    S&S Cycle - Black Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads)

    S&S Cycle

    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    S&S Cycle - Black Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder heads. It comes complete with cylinders, pistons,...
    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    Subtotal:
  • On Sale
     S&S Cycle - Stone Gray Powdercoat 124" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅝" Stroke, 11.4:1 Comp. W/ Stock Heads)

    S&S Cycle - Stone Gray Powdercoat 124" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅝" Stroke, 11.4:1 Comp. W/ Stock Heads)

    S&S Cycle

    MSRP: $1,679.95
    Now: $1,511.96
    Was: $1,679.95
    S&S Cycle - Stone Gray Powdercoat 124" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅝" Stroke, 11.4:1 Comp. W/ Stock Heads) This Big Bore Kit comes complete with cylinders, pistons, rings and gaskets (head, base and exhaust)...
    MSRP: $1,679.95
    Now: $1,511.96
    Was: $1,679.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,679.95
    Now: $1,511.96
    Was: $1,679.95
    Subtotal:
  • On Sale
     S&S Cycle - 3⅝" Big Bore Cylinder & Big Bore Piston Kit fits '66-'84 Shovelhead Engines

    S&S Cycle - 3⅝" Big Bore Cylinder & Big Bore Piston Kit fits '66-'84 Shovelhead Engines

    S&S Cycle

    MSRP: $1,999.95
    Now: $1,799.96
    Was: $1,999.95
    S&S Cycle - 3⅝" Big Bore Cylinder & Big Bore Piston Kit fits '66-'84 Shovelhead Engines This kit can be used to construct an 88" engine, or to replace the cylinders and piston in an engine with an existing S&S® stock bore stroker kit...
    MSRP: $1,999.95
    Now: $1,799.96
    Was: $1,999.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,999.95
    Now: $1,799.96
    Was: $1,999.95
    Subtotal:
  • On Sale
     S&S Cycle - Silver 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines

    S&S Cycle - Silver 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines

    S&S Cycle

    MSRP: $1,594.95
    Now: $1,435.46
    Was: $1,594.95
    S&S Cycle - Silver 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine which will...
    MSRP: $1,594.95
    Now: $1,435.46
    Was: $1,594.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,594.95
    Now: $1,435.46
    Was: $1,594.95
    Subtotal:
  • On Sale
     S&S Cycle - Wrinkle Black 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines

    S&S Cycle - Wrinkle Black 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines

    S&S Cycle

    MSRP: $1,550.95
    Now: $1,395.86
    Was: $1,550.95
    S&S Cycle - Wrinkle Black 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine...
    MSRP: $1,550.95
    Now: $1,395.86
    Was: $1,550.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,550.95
    Now: $1,395.86
    Was: $1,550.95
    Subtotal:
  • On Sale
     S&S Cycle - Silver 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines

    S&S Cycle - Silver 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines

    S&S Cycle

    MSRP: $1,345.95
    Now: $1,211.36
    Was: $1,345.95
    S&S Cycle - Silver 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine which will...
    MSRP: $1,345.95
    Now: $1,211.36
    Was: $1,345.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,345.95
    Now: $1,211.36
    Was: $1,345.95
    Subtotal:
  • On Sale
     S&S Cycle - Wrinkle Black 124" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'21 107" M8 Engines

    S&S Cycle - Wrinkle Black 124" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'21 107" M8 Engines

    S&S Cycle

    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    S&S Cycle - Wrinkle Black 124" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'21 107" M8 Engines This is a bolt-on kit that features the biggest bore possible with no machining of the crankcases necessary! It includes all of the required...
    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    Subtotal:
  • On Sale
     S&S Cycle - Wrinke Black 128" Big Bore Kit W/O Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines

    S&S Cycle - Wrinke Black 128" Big Bore Kit W/O Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines

    S&S Cycle

    MSRP: $1,561.95
    Now: $1,405.76
    Was: $1,561.95
    S&S Cycle - Wrinke Black 128" Big Bore Kit W/O Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines This is a bolt-on kit that features the biggest cylinder bore possible with no machining of the crankcases necessary! It includes all of the...
    MSRP: $1,561.95
    Now: $1,405.76
    Was: $1,561.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,561.95
    Now: $1,405.76
    Was: $1,561.95
    Subtotal:
  • On Sale
     S&S Cycle - Black Granite 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines  S&S Cycle - Black Granite 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines

    S&S Cycle - Black Granite 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines

    S&S Cycle

    MSRP: $1,559.95
    Now: $1,403.96
    Was: $1,559.95
    S&S Cycle - Black Granite 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines This is a bolt-on kit that features the biggest cylinder bore possible with no machining of the crankcases necessary! It includes all of the...
    MSRP: $1,559.95
    Now: $1,403.96
    Was: $1,559.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,559.95
    Now: $1,403.96
    Was: $1,559.95
    Subtotal:
  • On Sale
     S&S Cycle - Black/Highlighted 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines

    S&S Cycle - Black/Highlighted 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines

    S&S Cycle

    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    S&S Cycle - Black/Highlighted 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines  S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power...
    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,595.95
    Now: $1,436.36
    Was: $1,595.95
    Subtotal:
  • On Sale
     S&S Cycle - Black 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines

    S&S Cycle - Black 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines

    S&S Cycle

    MSRP: $1,599.95
    Now: $1,439.96
    Was: $1,599.95
    S&S Cycle - Black 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power increase! It is...
    MSRP: $1,599.95
    Now: $1,439.96
    Was: $1,599.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,599.95
    Now: $1,439.96
    Was: $1,599.95
    Subtotal:
  • On Sale
     S&S Cycle - Black 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines

    S&S Cycle - Black 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines

    S&S Cycle

    MSRP: $1,599.95
    Now: $1,439.96
    Was: $1,599.95
    S&S Cycle - Black 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power increase! It is...
    MSRP: $1,599.95
    Now: $1,439.96
    Was: $1,599.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,599.95
    Now: $1,439.96
    Was: $1,599.95
    Subtotal:
  • On Sale
     S&S Cycle - Silver XL883 to 1200 Conversion Kit fits '86-'20 XL 883 Models

    S&S Cycle - Silver XL883 to 1200 Conversion Kit fits '86-'20 XL 883 Models

    S&S Cycle

    MSRP: $1,095.95
    Now: $986.36
    Was: $1,095.95
    S&S Cycle - Silver XL883 to 1200 Conversion Kit fits '86-'20 XL 883 Models This conversion kit installs in no time at all since the pistons are already fit to the cylinders, making them prepared for assembly as soon as you open them! The kits are...
    MSRP: $1,095.95
    Now: $986.36
    Was: $1,095.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,095.95
    Now: $986.36
    Was: $1,095.95
    Subtotal:
  • On Sale
     S&S Cycle - 100" Power Packages fits '99-'06 Twin Cam Engines (Exc. '06 Dynas)  S&S Cycle - 100" Power Packages fits '99-'06 Twin Cam Engines (Exc. '06 Dynas)

    S&S Cycle - 100" Power Packages fits '99-'06 Twin Cam Engines (Exc. '06 Dynas)

    S&S Cycle

    $3,011.36 - $3,121.16
    S&S Cycle - 100" Power Packages fits '99-'06 Twin Cam Engines (Exc. '06 Dynas) S&S Cycle has created the largest big-bore kits available today, without doing crankcase mods! This kit increases displacement to 100" ('99-'06) and the cylinders fit...
    $3,011.36 - $3,121.16
    Qty in Cart: 0
    Quantity:
    Price:
    $3,011.36 - $3,121.16
    Subtotal:
  • On Sale
     S&S Cycle - 128" Power Packages fits '17-'21 M8 Water/Oil-Cooled Engines  S&S Cycle - 128" Power Packages fits '17-'21 M8 Water/Oil-Cooled Engines

    S&S Cycle - 128" Power Packages fits '17-'21 M8 Water/Oil-Cooled Engines

    S&S Cycle

    $3,085.16 - $3,114.86
    S&S Cycle - 128" Power Packages fits '17-'20 M8 Water/Oil-Cooled Engines This Power Package increases your 114"/117" with a 4-1/2" stroke M8 to 128". It is available in a wrinkle black or black granite finish and your choice of cylinders with or...
    $3,085.16 - $3,114.86
    Qty in Cart: 0
    Quantity:
    Price:
    $3,085.16 - $3,114.86
    Subtotal:
  • Out of stock
    V-Twin - 107" Big Bore Twin Cam Cylinder Kit fits '99-'06 FLST/FXST/FLT/FXD Model

    V-Twin - 107" Big Bore Twin Cam Cylinder Kit fits '99-'06 FLST/FXST/FLT/FXD Model

    V-Twin Manufacturing

    $675.80
    V-Twin - 107" Big Bore Twin Cam Cylinder Kit fits '99-'06 FLST/FXST/FLT/FXD Model 107" Twin Cam big bore cylinder kit includes 10.5:1 piston kit and steel cylinders with black finish. Requires case machining and fits a 4" stroke flywheel...
    $675.80
    Qty in Cart: 0
    Quantity:
    Price:
    $675.80
    Subtotal:
  • Out of stock
    S&S Cycle - 310-1055A - 124" Power Package - Gear Drive - Highlighted Fins - Black Pushrod Tubes - 107" M8

    S&S Cycle - 310-1055A - 124" Power Package - Gear Drive - Highlighted Fins - Black Pushrod Tubes - 107" M8

    S&S Cycle

    $3,427.95
    S&S Cycle - 310-1055A - 124" Power Package - Gear Drive - Highlighted Fins - Black Pushrod Tubes - 107" M8FeaturesMade in the U.S.A.Big Bore Kit107" to 124" Big bore kitBolt on kit.No case machining requiredForged pistons11.1 Compression ratioOil...
    $3,427.95
    Qty in Cart: 0
    Quantity:
    Price:
    $3,427.95
    Subtotal:
  • Out of stock
    On Sale
     S&S Cycle - Black/Highlighted 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines

    S&S Cycle - Black/Highlighted 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines

    S&S Cycle

    MSRP: $1,499.95
    Now: $1,484.96
    Was: $1,649.95
    S&S Cycle - Black/Highlighted 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines  S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power...
    MSRP: $1,499.95
    Now: $1,484.96
    Was: $1,649.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $1,499.95
    Now: $1,484.96
    Was: $1,649.95
    Subtotal:
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