S&S Cycle Big Bore & Top End

Features Cylinder and piston kit can be used to build 84", 86" or 88" stroker engines, or to replace the cylinders and piston in an engine with an...

Features Cylinder and piston kit can be used to build an 88" engine, or to replace the cylinders and piston in an engine with an existing S&S ...

Features Cylinder and piston kits contain S&S 3-1/2" bore (80") cylinders and forged pistons, rings, wrist pins, and head and base gaskets The...

Features Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frame Cast Ductile Iron Slee...

Features Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frame Cast Ductile Iron Slee...

Features Bolt in - no machining, balancing or splitting the crankcases; install can be performed with engine still in frame Cast Ductile Iron Slee...

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 Made in the USA S&S 4.000" Big-Bore Cylinders, Piston Kits, S&S 585 Easy Start® Cams, S&S Quickee Pushrods, TC3 Cam Support P...

Features Made in the USA S&S 4.000" Big-Bore Cylinders, Piston Kits, S&S 585 Easy Start® Cams, S&S Quickee Pushrods, TC3 Cam Support P...

Features Made in the USA S&S 4.000" Big-Bore Cylinders, Piston Kits, S&S 585 Easy Start® Cams, S&S Quickee Pushrods, TC3 Cam Support P...

Features Made in the USA S&S 4.000" Big-Bore Cylinders, Piston Kits, S&S 585 Easy Start® Cams, S&S Quickee Pushrods, TC3 Cam Support P...

Features Original engine serial numbers are retained MLS (Multi-Layered Steel) head gaskets Retains stock engine height Stock bolt pattern Notes ...

Features Transform 107" oil-cooled M8 into 129" with no case machining required Big bore cylinders come with matching cam, cam plate and oil pump...

Features Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressure relief valve can be adjusted with unit installed in the engin...

*SHIPPING TO THE USA & CANADA ONLY!!!EXCLUDING CALIFORNIA  Features Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressu...

*SHIPPING TO THE USA & CANADA ONLY!!!EXCLUDING CALIFORNIA  Features Transform the 114" or the 117" oil-cooled M8 into 132" Adjustable pressur...