Big Bore Kits

S&S Cycle 32-2221 S&S Cycle 65-69 BT 84in Stock Bore Stroker Kit

Stock bore stroker kits have always been an economical way to increase the displacement of your engine. This S&S 84" stock bore Hot Set Up Kit upgrades 74" panhead and shovelhead engines to 84"...

S&S Cycle 320-0449 S&S Cycle 2007+ BT 106in Stock Bore Stroker Kit with Roller Bearings

Stock bore stroker kits have always been an economical way to increase the displacement of your engine. Installation of this kit does not require any special machining, other than fitting the pistons...

S&S Cycle 91-7660 S&S Cycle 84-99 BT 96in Sidewinder Big Bore Stroker Kit - Natural

An S&S 96" 3-5/8" Sidewinder big bore stroker kit is an economical route to a larger displacement engine. This kit contains nearly everying needed to take a stock 80" Harley-Davidson® Evolution® big...

S&S Cycle 91-9031 S&S Cycle 66-84 BT 93in High Compression 3-5/8in Big Bore Cylinder & Piston Kit - Gloss Black

This 3-5/8" big bore kit may be used to replace the cylinders and pistons of an S&S SH93 high compression engine or a stock HD® shovelhead engine that has been upgraded with an S&S 93" Hot Set Up...

S&S Cycle 91-9100 S&S Cycle 66-84 BT w/ S&S 93in Sidewinder Kit 3-5/8in Bore Cylinder Set - Gloss Black

This 3-5/8" bore gloss black cylinder set is for 88", 1966-'84 big twins. They are 5.405" in length and are made from high strength engineering-grade grey cast iron. They offer excellent wear...

S&S Cycle 91-9101 S&S Cycle 66-84 BT 93in Standard Compression 3-5/8in Big Bore Cylinder & Piston Kit - Gloss Black

93" Standard Compression 3-5/8" Big Bore Cylinder and Piston Kit for S&S SH93 Engines or 1966-84 HD® Big Twins With S&S 93" Sidewinder Kit - Gloss Black Finish FitmentYear(s)MakeModel CodeModel

S&S Cycle 91-9140 S&S Cycle 70-84 BT 103in Sidewinder Big Bore Stroker Kit - Gloss Black

An S&S 103" 3-5/8" Sidewinder big bore stroker kit is an economical route to a larger displacement engine. This kit contains nearly everying needed to take a stock 74" or 80" HD® shovelhead engine up...

S&S Cycle 91-9201 S&S Cycle 66-84 BT 98in 3-5/8in Big Bore Cylinder & Piston Kit For S&S SH98 Engines - Gloss Black

This 3-5/8" big bore kit may be used to replace the cylinders and pistons of an S&S SH98 engine or a stock HD® shovelhead engine that has been upgraded with an S&S 98" Sidewindert® kit. Stock...

S&S Cycle 91-9401 S&S Cycle 66-84 BT 96in 3-5/8in Big Bore Cylinder & Piston Kit For S&S SH96 Engines - Gloss Black

This 3-5/8" big bore kit may be used to replace the cylinders and pistons of an S&S SH96 engine or a stock HD® shovelhead engine that has been upgraded with an S&S 96" Hot Set Up Kit® . This kit may...

S&S Cycle 910-0318 S&S Cycle 07-16 BT 117in Low Compression 4-1/8in Big Bore Kit - Wrinkle Black

This big bore cylinder and piston kit contains S&S 4-1/8" bore cylinders and forged 10cc dished dome pistons, rings, wrist pins, head and base gaskets. The cylinders are machined with the stock bolt...

S&S Cycle 910-0321 S&S Cycle 07-17 BT 117in Low Compression 4-1/8in Big Bore Kit - Silver

This big bore cylinder and piston kit contains S&S 4-1/8" bore cylinders and forged 10cc dished dome pistons, rings, wrist pins, head and base gaskets. The cylinders are machined with the stock bolt...

S&S Cycle 910-0327 S&S Cycle 07-16 BT 124in Low Compression 4-1/8in Big Bore Kit - Silver

This big bore cylinder and piston kit can be used as replacement for the cylinders and pistons for an S&S 124" Hot Set Up Kit, a T124 T2 engine or as the basis for a new engine build. Kit contains...

S&S Cycle 910-0341 S&S Cycle 07-16 BT 124in Standard Compression 4-1/8in Big Bore Kit - Silver

This big bore cylinder and piston kit can be used as replacement for the cylinders and pistons for an S&S 124" Hot Set Up Kit, a T124 T2 engine or as the basis for a new engine build. Kit contains...

S&S Cycle 910-0625 S&S Cycle 2017 M8 Touring 4.250in Bore x 4.375in Stroke 107 To 124 Big Bore Kit

S&S Cycle 2017 M8 Touring 4.250in Bore x 4.375in Stroke 107 To 124 Big Bore Kit107 to 124" big bore kitWe recommend using S&S Cycle Head Bolts for M8, part number 900-1006 for all big bore...

TC 106 BIG BORE KIT BLACK