S&S Cycle - 910-0199 - Silver Powdercoat 3.875" Cylinder/Piston Kit - Fits S&S 106" Stroker Only (10.5:1 Compression) (88" Motor Only) Fits: S&S 106" Stroker Only (10.5:1 Compression) (88" Motor Only). Full year/model list is on the Fitment tab. NOTES:...

S&S Cycle - Black Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder heads. It comes complete with cylinders, pistons,...

S&S Cycle - Silver Powdercoat 95" Big Bore Kit fits '99-'06 Twin Cam Engines (3.875" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder heads. It comes complete with cylinders, pistons,...

S&S Cycle - 910-0206 - Black Powdercoat 106" Big Bore Kit - Fits '06-'17 Twin Cam Engines (3.937" Bore, 4⅜" Stroke, 10:1 Comp. W/ Stock Heads) Fits: '06-'17 Twin Cam Engines (3.937" Bore, 4⅜" Stroke, 10:1 Comp. W/ Stock Heads). Full year/model list is on...

S&S Cycle - 910-0202 - Silver Powdercoat 106" Big Bore Kit - Fits '06-'17 Twin Cam Engines (3.937" Bore, 4⅜" Stroke, 10:1 Comp. W/ Stock Heads) Fits: '06-'17 Twin Cam Engines (3.937" Bore, 4⅜" Stroke, 10:1 Comp. W/ Stock Heads). Full year/model list is...

S&S Cycle - 910-0205 - Black Powdercoat 97" Big Bore Kit - Fits '99-'06 Twin Cam Engines (3.927" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads) Fits: '99-'06 Twin Cam Engines (3.927" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads). Full year/model list is on...

S&S Cycle - 910-0201 - Silver Powdercoat 97" Big Bore Kit - Fits '99-'06 Twin Cam Engines (3.927" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads) Fits: '99-'06 Twin Cam Engines (3.927" Bore, 4" Stroke, 9.7:1 Comp. W/ Stock Heads). Full year/model list is on...

S&S Cycle - 910-0500 - Black Powdercoat 107" Big Bore Kit - Fits All '07-'17 Twin Cam Models (3.937" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads) Fits: All '07-'17 Twin Cam Models (3.937" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads). Full year/model...

S&S Cycle - 910-0480 - Silver Powdercoat 107" Big Bore Kit - Fits All '07-'17 Twin Cam Models (3.937" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads) Fits: All '07-'17 Twin Cam Models (3.937" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads). Full year/model...

S&S Cycle - 910-0481 - Black Powdercoat 98" Big Bore Kit - Fits '99-'06 Twin Cam Engines (3.937" Bore, 4" Stroke, 9.8:1 Comp. W/ Stock Heads) Fits: '99-'06 Twin Cam Engines (3.937" Bore, 4" Stroke, 9.8:1 Comp. W/ Stock Heads). Full year/model list is on...

S&S Cycle - 910-0482 - Silver Powdercoat 98" Big Bore Kit - Fits '99-'06 Twin Cam Engines (3.937" Bore, 4" Stroke, 9.8:1 Comp. W/ Stock Heads) Fits: '99-'06 Twin Cam Engines (3.937" Bore, 4" Stroke, 9.8:1 Comp. W/ Stock Heads). Full year/model list is on...

S&S Cycle - Stone Gray Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder heads. It comes complete with cylinders,...

S&S Cycle - Black Powdercoat 117" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅜" Stroke, 10.5:1 Comp. W/ Stock Heads) This Big Bore Kit produces outstanding outcomes with stock cylinder heads. It comes complete with cylinders, pistons,...

S&S Cycle - Stone Gray Powdercoat 124" Big Bore Kit fits '07-'17 Twin Cam Engines (4.125" Bore, 4⅝" Stroke, 11.4:1 Comp. W/ Stock Heads) This Big Bore Kit comes complete with cylinders, pistons, rings and gaskets (head, base and exhaust)...

S&S Cycle - 96" Big Bore Kit fits '84-'00 Evolution Big Twin Engines (3⅝" Bore, 4⅝" Stroke, 9.75:1 Compression Ratio W/ Stock Heads) The cylinders featured in this kit are built with premium aluminum castings with cast-in iron liners. This kit also...

S&S Cycle - 124" Cylinder and Piston Kit fits '07-'17 Twin Cam Engines  This kit is designed to be used with stock heads or S&S heads with a stock bolt pattern and comes complete with fitted 10.9cc dished forged pistons, pins, clips, rings,...

S&S Cycle - 4⅛" Bore Cylinders fits '07-'17 Twin Cam Engines W/ 124" Hot Set Up Kits These Cylinders are built for 124" Hot Set Up Kits utilized in '99-'17 Twin Cam models and are bored slightly under the normal size and are not honed. NOTE:...

S&S Cycle - Stock Bore 80" Cylinder and Standard Compression Piston Kit fits '78-'84 Shovelhead Engines This Kit is built to replace the cylinders and pistons of an 80" Shovelhead engine whilst maintaining the stock compression ratio of 8:1. It...

S&S Cycle - Natural 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads S&S Cycle's 80" Bore Cylinder & Piston Kits feature S&S 3½" bore cylinders and forged pistons, rings, wrist...

S&S Cycle - Wrinkle Black 80" Bore Cylinder & Piston Kit fits '84-'00 Evolution Big Twin Models W/ Stock or S&S Heads S&S Cycle's 80" Bore Cylinder & Piston Kits feature S&S 3½" bore cylinders and forged pistons, rings,...

S&S Cycle - Silver 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine which will...

S&S Cycle - Wrinkle Black 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine...

S&S Cycle - Silver 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine which will...

S&S Cycle - Wrinkle Black 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines This Big Bore Kit has a 10.5:1 compression ratio (W/ stock 85cc heads) that will transform your engine into a street-ready and reliable machine...

S&S Cycle - Wrinkle Black 124" Big Bore Kit W/O Highlighted Cylinder Fins fits '17-'21 107" M8 Engines This is a bolt-on kit that features the biggest bore possible with no machining of the crankcases necessary! It includes all of the required...

S&S Cycle - Wrinkle Black 124" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'21 107" M8 Engines This is a bolt-on kit that features the biggest bore possible with no machining of the crankcases necessary! It includes all of the required...

S&S Cycle - Wrinke Black 128" Big Bore Kit W/O Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines This is a bolt-on kit that features the biggest cylinder bore possible with no machining of the crankcases necessary! It includes all of the...

S&S Cycle - Wrinke Black 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines This is a bolt-on kit that features the biggest cylinder bore possible with no machining of the crankcases necessary! It includes all of the...

S&S Cycle - Wrinkle Black 4¼" Bore M8 Cylinders W/O Highlighted Cylinder Fins fits '17-'20 M8 Engines  These cylinders are bored slightly under nominal size and are not honed. Features Bolt on Cylinder Set For M8 Models Sold in...

S&S Cycle - Wrinkle Black 4¼" Bore M8 Cylinders W/ Highlighted Cylinder Fins fits '17-'20 M8 Engines  These cylinders are bored slightly under nominal size and are not honed. Features Bolt on Cylinder Set For M8 Models Sold in...

S&S Cycle - Black Granite 128" Big Bore Kit W/ Highlighted Cylinder Fins fits '17-'20 114" 117" M8 Engines This is a bolt-on kit that features the biggest cylinder bore possible with no machining of the crankcases necessary! It includes all of the...

S&S Cycle - Black Granite 4¼" Bore M8 Cylinders W/ Highlighted Cylinder Fins fits '17-'20 M8 Engines  These cylinders are bored slightly under nominal size and are not honed. Features Bolt on Cylinder Set For M8 Models Sold in...

S&S Cycle - Wrinkle Black 131" Stroker Cylinder & Piston Kit W/ Highlighted Cylinder Fins fits '17-'21 M8 Engines S&S Cycle's Stroker Cylinder & Piston Kit is a bolt-on kit that is compatible with the stock crankcases and features...

S&S Cycle - Wrinkle Black 131" Stroker Cylinder & Piston Kit W/ Non-Highlighted Cylinder Fins fits '17-'21 M8 Engines S&S Cycle's Stroker Cylinder & Piston Kit is a bolt-on kit that is compatible with the stock crankcases and features...

S&S Cycle - Black/Highlighted 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines  S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power...

S&S Cycle - Black 4.375" Stroke 129" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power increase! It is...

S&S Cycle - Black/Highlighted 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines  S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power...

S&S Cycle - Black 4.5" Stroke 132" Big Bore Cylinder & Piston Kit fits '17 & Up M8 Engines S&S Cycle's Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320") that, in turn, delivers a huge power increase! It is...

S&S Cycle - Natural Finish Evolution-Style Aluminum Cylinders fits '84-'99 Evolution Big Twin Engines S&S Cycle's Evolution-Style Aluminum Cylinders are stock replacement cylinders featuring a 3½" bore with a cast-iron liner. Its finish...

S&S Cycle - 4⅛" Bore Cylinders fits '99-'06 Twin Cam Engines W/ 124" Hot Set Up Kits These Bore Cylinders are built for 124" Hot Set Up Kits utilized in '99-'17 Twin Cam models and are bored slightly under the normal size and are not honed. NOTE:...