S & S Big Bore Kits

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    S & S Big Bore Kits from K and G Cycles!
    22 products

    22 products

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    S&S CYCLE Black 1250cc Conversion Kit, Powder-Coated, Wrinkle, Harley 86 - 16 XL
    S&S Cycle
    $949.95
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    S&S CYCLE Black Big Bore Kit, Harley 07-16 FX 07-16 FL
    S&S Cycle
    $1,489.95
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    S&S CYCLE Stone Gray Big Bore Kit, Requires Case Machining For Installation., Harley 07-16 FX 07-16 FL
    S&S Cycle
    $1,489.95
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    S&S CYCLE Black Big Bore Kit, Requires Case Machining For Installation., 10.9:1, Harley 07-16 FX 07-16 FL
    S&S Cycle
    $1,489.95
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    S&S CYCLE Stone Gray Big Bore Kit, Requires Case Machining For Installation., 10.9:1, Harley 07-16 FX 07-16 FL
    S&S Cycle
    $1,489.95
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    S&S CYCLE Silver Big Bore Kit, bore size 3.937", 9.8:1, stroke 4", Harley 99-06 FX 99-06 FL
    S&S Cycle
    $1,279.95
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    S&S CYCLE Black Big Bore Kit, bore size 3.937", 9.8:1, stroke 4", Harley 99-06 FX 99-06 FL
    S&S Cycle
    $1,279.95
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    S&S CYCLE Silver Big Bore Kit, bore size 3.927", 9.9:1, Harley 07-16 FX 07-16 FL
    S&S Cycle
    $1,279.95
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    S&S CYCLE Black Big Bore Kit, bore size 3.927", 9.9:1, Harley 07-16 FX 07-16 FL
    S&S Cycle
    $1,279.95
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    S&S CYCLE Silver 1250cc Conversion Kit, Harley 86 - 16 XL
    S&S Cycle
    $949.95
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    S&S CYCLE Black 1250cc Conversion Kit, Powder-Coated, Wrinkle, Harley 86 - 16 XL
    S&S Cycle
    $949.95
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    S&S CYCLE Silver 1250cc Conversion Kit, Powder-Coated, Harley 86 - 16 XL
    S&S Cycle
    $949.95
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    S&S CYCLE Silver Big Bore Kit, bore size 3.927", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL
    S&S Cycle
    $1,159.95
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    S&S CYCLE Black Big Bore Kit, bore size 3.927", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL
    S&S Cycle
    $1,159.95
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    S&S CYCLE Silver Big Bore Kit, Not For Twin-Cooled Twin Cam., bore size 3.927", 10.0:1, Harley 07-16 FX 07-16 FL
    S&S Cycle
    $1,159.95
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    S&S CYCLE Black Big Bore Kit, 10.0:1, Harley 07-16 FX 07-16 FL
    S&S Cycle
    $1,179.95
    Sold Out
    S&S CYCLE Silver Big Bore Kit, bore size 3.875", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL
    S&S Cycle
    $1,219.95
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    S&S CYCLE Black Big Bore Kit, bore size 3.875", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL
    S&S Cycle
    $1,219.95
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    S&S CYCLE Silver Cylinder Kit For 106" Stroker
    S&S Cycle
    $1,249.95
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    S&S CYCLE Black Cylinder Kit For 106" Stroker
    S&S Cycle
    $1,219.95
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    S&S CYCLE Black 124" Hot Setup For Stock Or S&S Heads, Will Not Fit Twin Cooled Models., Harley 06-16 FX 07-16 FL
    S&S Cycle
    $6,449.95
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    S&S CYCLE Black 124" Hot Setup For Stock Or S&S Heads, Harley 99-05 FX 99-06 FL
    S&S Cycle
    $6,609.95
    S&S CYCLE Black 1250cc Conversion Kit, Powder-Coated, Wrinkle, Harley 86 - 16 XL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black 1250cc Conversion Kit, Powder-Coated, Wrinkle, Harley 86 - 16 XL

    DS-09310526

    $949.95

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    S&S CYCLE Black 1250cc Conversion Kit, Powder-Coated, Wrinkle, Harley 86 - 16 XL
    • Forged pistons - coated piston skirts with measurement window and S & S logo
    • Forged pistons have larger than stock valve pockets and accepts up to 2.00" valves
    • Available in silver powder coat or wrinkle black powder coat finish
    • Kit includes S & S 1250cc pistons with rings and wristpins, S & S 39/16" bore cylinders, MLS head, base and exhaust gaskets, assembly lube and instructions
    • Made in the U.S.A.
    S&S CYCLE Black Big Bore Kit, Harley 07-16 FX 07-16 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black Big Bore Kit, Harley 07-16 FX 07-16 FL

    DS-09310541

    $1,489.95

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    S&S CYCLE Black Big Bore Kit, Harley 07-16 FX 07-16 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Stone Gray Big Bore Kit, Requires Case Machining For Installation., Harley 07-16 FX 07-16 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Stone Gray Big Bore Kit, Requires Case Machining For Installation., Harley 07-16 FX 07-16 FL

    DS-09310540

    $1,489.95

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    S&S CYCLE Stone Gray Big Bore Kit, Requires Case Machining For Installation., Harley 07-16 FX 07-16 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Black Big Bore Kit, Requires Case Machining For Installation., 10.9:1, Harley 07-16 FX 07-16 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black Big Bore Kit, Requires Case Machining For Installation., 10.9:1, Harley 07-16 FX 07-16 FL

    DS-09310539

    $1,489.95

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    S&S CYCLE Black Big Bore Kit, Requires Case Machining For Installation., 10.9:1, Harley 07-16 FX 07-16 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Silver Big Bore Kit, bore size 3.937", 9.8:1, stroke 4", Harley 99-06 FX 99-06 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Silver Big Bore Kit, bore size 3.937", 9.8:1, stroke 4", Harley 99-06 FX 99-06 FL

    DS-09310537

    $1,279.95

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    S&S CYCLE Silver Big Bore Kit, bore size 3.937", 9.8:1, stroke 4", Harley 99-06 FX 99-06 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Black Big Bore Kit, bore size 3.937", 9.8:1, stroke 4", Harley 99-06 FX 99-06 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black Big Bore Kit, bore size 3.937", 9.8:1, stroke 4", Harley 99-06 FX 99-06 FL

    DS-09310536

    $1,279.95

    In Stock

    Save $-1,279.95
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    Shipping calculated at checkout.
    S&S CYCLE Black Big Bore Kit, bore size 3.937", 9.8:1, stroke 4", Harley 99-06 FX 99-06 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Silver Big Bore Kit, bore size 3.927", 9.9:1, Harley 07-16 FX 07-16 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Silver Big Bore Kit, bore size 3.927", 9.9:1, Harley 07-16 FX 07-16 FL

    DS-09310535

    $1,279.95

    In Stock

    Save $-1,279.95
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    S&S CYCLE Silver Big Bore Kit, bore size 3.927", 9.9:1, Harley 07-16 FX 07-16 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Black Big Bore Kit, bore size 3.927", 9.9:1, Harley 07-16 FX 07-16 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black Big Bore Kit, bore size 3.927", 9.9:1, Harley 07-16 FX 07-16 FL

    DS-09310534

    $1,279.95

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    S&S CYCLE Black Big Bore Kit, bore size 3.927", 9.9:1, Harley 07-16 FX 07-16 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Silver 1250cc Conversion Kit, Harley 86 - 16 XL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Silver 1250cc Conversion Kit, Harley 86 - 16 XL

    DS-09310529

    $949.95

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    S&S CYCLE Silver 1250cc Conversion Kit, Harley 86 - 16 XL
    • Forged pistons - coated piston skirts with measurement window and S & S logo
    • Forged pistons have larger than stock valve pockets and accepts up to 2.00" valves
    • Available in silver powder coat or wrinkle black powder coat finish
    • Kit includes S & S 1250cc pistons with rings and wristpins, S & S 39/16" bore cylinders, MLS head, base and exhaust gaskets, assembly lube and instructions
    • Made in the U.S.A.
    BORE SIZE 3.562"
    DISPLACEMENT 1250 CC
    STROKE LENGTH 3-13/16"
    COMPRESSION RATIO 11.2:1
    S&S CYCLE Black 1250cc Conversion Kit, Powder-Coated, Wrinkle, Harley 86 - 16 XL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black 1250cc Conversion Kit, Powder-Coated, Wrinkle, Harley 86 - 16 XL

    DS-09310528

    $949.95

    In Stock

    Save $-949.95
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    S&S CYCLE Black 1250cc Conversion Kit, Powder-Coated, Wrinkle, Harley 86 - 16 XL
    • Forged pistons - coated piston skirts with measurement window and S & S logo
    • Forged pistons have larger than stock valve pockets and accepts up to 2.00" valves
    • Available in silver powder coat or wrinkle black powder coat finish
    • Kit includes S & S 1250cc pistons with rings and wristpins, S & S 39/16" bore cylinders, MLS head, base and exhaust gaskets, assembly lube and instructions
    • Made in the U.S.A.
    S&S CYCLE Silver 1250cc Conversion Kit, Powder-Coated, Harley 86 - 16 XL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Silver 1250cc Conversion Kit, Powder-Coated, Harley 86 - 16 XL

    DS-09310527

    $949.95

    In Stock

    Save $-949.95
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    S&S CYCLE Silver 1250cc Conversion Kit, Powder-Coated, Harley 86 - 16 XL
    • Forged pistons - coated piston skirts with measurement window and S & S logo
    • Forged pistons have larger than stock valve pockets and accepts up to 2.00" valves
    • Available in silver powder coat or wrinkle black powder coat finish
    • Kit includes S & S 1250cc pistons with rings and wristpins, S & S 39/16" bore cylinders, MLS head, base and exhaust gaskets, assembly lube and instructions
    • Made in the U.S.A.
    S&S CYCLE Silver Big Bore Kit, bore size 3.927", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Silver Big Bore Kit, bore size 3.927", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL

    DS-09310437

    $1,159.95

    In Stock

    Save $-1,159.95
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    Shipping calculated at checkout.
    S&S CYCLE Silver Big Bore Kit, bore size 3.927", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Black Big Bore Kit, bore size 3.927", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black Big Bore Kit, bore size 3.927", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL

    DS-09310436

    $1,159.95

    In Stock

    Save $-1,159.95
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    Shipping calculated at checkout.
    S&S CYCLE Black Big Bore Kit, bore size 3.927", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Silver Big Bore Kit, Not For Twin-Cooled Twin Cam., bore size 3.927", 10.0:1, Harley 07-16 FX 07-16 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Silver Big Bore Kit, Not For Twin-Cooled Twin Cam., bore size 3.927", 10.0:1, Harley 07-16 FX 07-16 FL

    DS-09310435

    $1,159.95

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    S&S CYCLE Silver Big Bore Kit, Not For Twin-Cooled Twin Cam., bore size 3.927", 10.0:1, Harley 07-16 FX 07-16 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Black Big Bore Kit, 10.0:1, Harley 07-16 FX 07-16 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black Big Bore Kit, 10.0:1, Harley 07-16 FX 07-16 FL

    DS-09310434

    $1,179.95

    In Stock

    Save $-1,179.95
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    S&S CYCLE Black Big Bore Kit, 10.0:1, Harley 07-16 FX 07-16 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Black Big Bore Kit, bore size 3.875", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black Big Bore Kit, bore size 3.875", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL

    DS-09310432

    $1,219.95

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    S&S CYCLE Black Big Bore Kit, bore size 3.875", 9.7:1, stroke 4", Harley 99-06 FX 99-06 FL
    • The Big Bore kit yields excellent results with stock cylinder heads (not for Twin Cooled motors) unless noted
    • Easy installation: no need to bore or split existing cases, just swap the cylinders (unless noted)
    • Cylinders are constructed from premium aluminum castings with cast-in iron liners
    • Kits include cylinders, pistons, rings and gaskets (head, base and exhaust)
    • Black or silver powder-coat finish
    • Made in the U.S.A.
    S&S CYCLE Silver Cylinder Kit For 106" Stroker Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Silver Cylinder Kit For 106" Stroker

    DS-09310431

    $1,249.95

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    S&S CYCLE Silver Cylinder Kit For 106" Stroker
    • Feature three-piece assembled flywheels with shafts
    • Do not require any motor case modification
    • 41/2" stroke
    • 103" stock motors or motors with factory 95" kits require piston kit only; stock or S&S cylinder heads can be used
    • Stock cylinders will require boring to 3.875"
    • For replacement piston rings, see page ???
    • Made in the U.S.A.
    S&S CYCLE Black Cylinder Kit For 106" Stroker Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black Cylinder Kit For 106" Stroker

    DS-09310430

    $1,219.95

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    S&S CYCLE Black Cylinder Kit For 106" Stroker
    • Feature three-piece assembled flywheels with shafts
    • Do not require any motor case modification
    • 41/2" stroke
    • 103" stock motors or motors with factory 95" kits require piston kit only; stock or S&S cylinder heads can be used
    • Stock cylinders will require boring to 3.875"
    • For replacement piston rings, see page ???
    • Made in the U.S.A.
    S&S CYCLE Black 124" Hot Setup For Stock Or S&S Heads, Harley 99-05 FX 99-06 FL Harley S&S Cycle - K and G Cycles
    S&S Cycle

    S&S CYCLE Black 124" Hot Setup For Stock Or S&S Heads, Harley 99-05 FX 99-06 FL

    DS-09030950

    $6,609.95

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    S&S CYCLE Black 124" Hot Setup For Stock Or S&S Heads, Harley 99-05 FX 99-06 FL
    • The S&S Hot Setup kit for Twin Cams allows a Twin Cam owner to convert a stock engine to 124" using the stock crankcases
    • Includes 4.125" bore cylinders and forged dished pistons, S&S 4.625" stroke flywheel assembly, S&S .640" lift chain-drive Easy Start cams, tappets, S&S Quickee adjustable pushrods, roller rocker arms, and all hardware, gaskets and instructions
    • 10.4:1 compression ratio with stock cylinder heads; 10.2:1 compression ratio with S&S 89cc heads (PART #s 0930-0006 or 0930-0068, sold separately
    • Fuel system is not included
    • Available in black powder-coat finish
    • Made in the U.S.A.