Big Bore Kits & Pistons
More cubic inches without pulling the engine. S&S Cycle Power Packages take a Twin Cam 88 to 100 inches, a 96 or 103 to 110, and an oil-cooled M8 114 or 117 to 128, with cylinders, pistons and cams matched as a set. Bolt-in 3-5/8 big bore cylinder and piston kits, stock-bore replacement cylinders, stroker piston kits and forged pistons for T143 engines cover Evolution and Twin Cam rebuilds. Plan on a tuner from Air & Fuel; a bigger engine needs a new map.
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S&S Cycle 100 Power Package Fits Harley-Davidson Twin Cam 88 1999-2006
$3,396.95A complete S&S Cycle 100 cubic-inch big-bore Power Package conversion kit for the Twin Cam 88 engine, available in Silver or Wrinkle Black cylinder finish with chain-drive or gear-drive 585 Easy Start cams, compatible with 1999-2006 Harley-Davidson Big Twin. -
S&S Cycle T143 Forged Piston Kit
$799.95The S&S Cycle T143 forged piston kit, available in standard bore or +.020 inch oversize, sized for S&S T143 engine rebuilds with new or bored-out cylinders. -
S&S Cycle 3-5/8″ Big Bore Cylinder and Piston Kit Fits Harley-Davidson Big Twin 1966-1984
$1,995.95This kit fits Harley-Davidson 1966-1984 models equipped with Shovelhead engines. Made in the U.S.A. by S&S Cycle for service-replacement use. Made in the U.S.A. by S&S Cycle for service-replacement use. -
S&S Cycle 128 Power Package Fits Harley-Davidson Oil-Cooled M8 114 and 117 2017-2022
Price range: $3,265.95 through $3,460.95A complete S&S Cycle 128 cubic-inch big-bore Power Package kit for the oil-cooled M8 114 or 117 engine in three finishes and chain or gear drive configurations, compatible with 2017-2022 Harley-Davidson oil-cooled Milwaukee-Eight Touring and Softail chassis. -
S&S Cycle 110 Power Package Fits Harley-Davidson Twin Cam 96 and 103 2007-2017
$3,396.95A complete S&S Cycle 110 cubic-inch big-bore Power Package conversion kit for the Twin Cam 96 or 103 oil-cooled engine, available in Silver or Black cylinder finish with chain-drive or gear-drive 585 Easy Start cams, compatible with 2007-2017 Harley-Davidson Big Twin. -
S&S Cycle 93 Inch Hot Set Up Engine Performance Kit Fits Harley-Davidson Shovelhead 1978-1984
$4,168.95Complete 93 cubic inch S&S Cycle Hot Set Up performance build Compatible with Harley-Davidson 1978-1984 Shovelhead Big Twin engines; case boring required during installation. -
S&S Cycle 106″ Hot Set Up Engine Performance Kit Fits Harley-Davidson Big Twin Twin Cam 2007-2017
$2,143.95This kit fits Harley-Davidson 2007-2017 Big Twin models with Twin Cam engines. Made in the U.S.A. by S&S Cycle for service-replacement use. Made in the U.S.A. by S&S Cycle for service-replacement use. -
S&S Cycle Bore Cylinder and Stroker Piston Kit Fits Harley-Davidson Big Twin 1966-1984
$1,995.95This kit fits Harley-Davidson 1966-1984 models equipped with Shovelhead engines. Made in the U.S.A. by S&S Cycle for service-replacement use. Made in the U.S.A. by S&S Cycle for service-replacement use. -
S&S Cycle Stock Bore 80″ Cylinder and Standard Compression Piston Kit Fits Harley-Davidson Big Twin
$1,995.95This kit fits Harley-Davidson 1979-1984 models with the 80 cubic inch Shovelhead engine. Made in the U.S.A. by S&S Cycle for service-replacement use. Made in the U.S.A. by S&S Cycle for service-replacement use. -
S&S Cycle 88 Inch Shovelhead Cylinder Kit Fits Harley-Davidson Big Twin 1966-1984
$1,287.95A genuine S&S Cycle 88 Inch Shovelhead Cylinder Kit, supplied as a complete big-bore cylinder and piston kit Compatible with Harley-Davidson 1966-1984 Big Twin Shovelhead engines in 88 cubic inch displacement. -
S&S Cycle 96″ Big Bore Kit Fits Harley-Davidson Big Twin 1984-1999
$1,489.95A genuine S&S Cycle 96" big bore kit for service-replacement use on the host S&S Cycle application; This kit fits Harley-Davidson 1984-1999 Big Twin models with stock cylinder heads. Made in the U.S.A. by S&S Cycle. -
S&S Cycle 4-1/4 Inch Bore Cylinder Set Fits Harley-Davidson M8 2017-2023
$977.95A pair of S&S Cycle 4-1/4 inch bore Milwaukee-Eight cylinders in Black Granite with highlighted fins, supplied unhoned without pistons, compatible with 2017-2023 Harley-Davidson Touring and 2018-2023 Softail M8 models; current part number 910-0739A. -
S&S Cycle 124″ Cylinder and Piston Kit Fits Harley-Davidson Twin Cam 2007-2017
$1,643.95This kit fits Harley-Davidson 2007-2017 models equipped with the Twin Cam engine. Made in the U.S.A. by S&S Cycle for service-replacement use. Made in the U.S.A. by S&S Cycle for service-replacement use. -
S&S Cycle Ring Set Fits Harley-Davidson Milwaukee-Eight M8 2017-Up
$168.95This ring set is designed to fits Harley-Davidson 2017-Up Milwaukee-Eight (M8) engines with a 4.250 inch bore diameter. Made in the U.S.A. by S&S Cycle for service-replacement use. -
S&S Cycle 124 Power Package Fits Harley-Davidson Twin-Cooled M8 107 2017-2022
Price range: $3,265.95 through $3,460.95A complete S&S Cycle 124 cubic-inch big-bore Power Package kit engineered for Twin-Cooled M8, available in two finishes and chain or gear drive configurations, compatible with 2017-2022 Harley-Davidson Twin-Cooled M8 107 Touring chassis. -
S&S Cycle 128 Power Package Fits Harley-Davidson Twin-Cooled M8 114 and 117 2017-2022
Price range: $3,265.95 through $3,460.95A complete S&S Cycle 128 cubic-inch big-bore Power Package kit engineered for Twin-Cooled M8, available in two finishes and chain or gear drive configurations, compatible with 2017-2022 Harley-Davidson Twin-Cooled M8 114/117 Touring chassis. -
S&S Cycle 124 Power Package Fits Harley-Davidson Oil-Cooled M8 107 2017-2022
Price range: $3,265.95 through $3,695.95A complete S&S Cycle 124 cubic-inch big-bore Power Package kit for the oil-cooled M8 107 engine in three finishes and chain or gear drive configurations, compatible with 2017-2022 Harley-Davidson oil-cooled Milwaukee-Eight Touring and Softail chassis with 107 ci base displacement.
Showing all 17 resultsSorted by popularity