ENGINE

Features 3.500" bore cylinders are for 80" or 89" big twins with stock, S&S® Performance, or Super Stock® heads Thicker castings, larger cooli...

Features Only for 88" motors Can be used to repair an existing 106" stroker engine Kit includes S&S 3-7/8" bore cylinders and forged stroker p...

Features Only for 88" motors Can be used to repair an existing 106" stroker engine Kit includes S&S 3-7/8" bore cylinders and forged stroker p...

Features Big Bore kit yields excellent results with stock cylinder heads Easy installation no need to bore or split existing cases, just swap the ...

Features Big Bore kit yields excellent results with stock cylinder heads Easy installation no need to bore or split existing cases, just swap the ...

Features Big Bore kit yields excellent results with stock cylinder heads Easy installation no need to bore or split existing cases, just swap the ...

Features Big Bore kit yields excellent results with stock cylinder heads Easy installation no need to bore or split existing cases, just swap the ...

Features Big Bore kit yields excellent results with stock cylinder heads Easy installation no need to bore or split existing cases, just swap the ...

Features Big Bore kit yields excellent results with stock cylinder heads Easy installation no need to bore or split existing cases, just swap the ...

Features Bolt-on without requiring machining of the crankcase Original engine serial numbers are retained MLS (multi-layered steel) head gaskets R...

Features Includes a 70mm S&S Throttle Hog throttle body and all components needed for installation on the 143" engine Made in the USA Note: ...

Features Includes a 70mm S&S Throttle Hog throttle body and all components needed for installation on the 143" engine Made in the USA Note: ...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features Requires throttle body specific Stealth air cleaners (available separately) for 58 mm and 66 mm bodies Sealed, stainless steel throttle s...

Features S&S cams are tested on the dyno, street and racetrack before being offered to the public With hundreds of test hours on them, you kno...