Dyna Big Bore Kits
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On Sale
S&S Cycle - 128" Power Packages fits '17-'21 M8 Oil-Cooled Engines
S&S Cycle
MSRP: $3,359.95Now: $3,114.86Was: $3,460.95S&S Cycle - 128" Power Packages fits '17-'20 M8 Oil-Cooled Engines This Power Package increases your 114"/117" with a 4-1/2" stroke M8 to 128". It is available in a wrinkle black or black granite finish and your choice of cylinders with or without...MSRP: $3,359.95Now: $3,114.86Was: $3,460.95Qty in Cart: 0Quantity:Price:MSRP: $3,359.95Now: $3,114.86Was: $3,460.95Subtotal: -
On Sale
S&S Cycle - 110" Power Package fits '07-'17 Twin Cam Engines
S&S Cycle
$3,011.36 - $3,121.16S&S Cycle - 110" Power Package fits '07-'17 Twin Cam Engines S&S Cycle has created the largest big-bore kits available today, without doing crankcase mods! This kit increases displacement to 110" ('07-'17) and the cylinders fit to the pistons...$3,011.36 - $3,121.16 -
On Sale
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)
S&S Cycle
MSRP: $1,339.95Now: $1,301.36Was: $1,445.95S&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...MSRP: $1,339.95Now: $1,301.36Was: $1,445.95 -
On Sale
S&S Cycle - Wrinkle Black 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines
S&S Cycle
MSRP: $1,409.95Now: $1,394.96Was: $1,549.95S&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...MSRP: $1,409.95Now: $1,394.96Was: $1,549.95 -
On Sale
S&S Cycle - 100" Power Packages fits '99-'06 Twin Cam Engines (Exc. '06 Dynas)
S&S Cycle
$3,011.36 - $3,121.16S&S Cycle - 100" Power Packages fits '99-'06 Twin Cam Engines (Exc. '06 Dynas) S&S Cycle has created the largest big-bore kits available today, without doing crankcase mods! This kit increases displacement to 100" ('99-'06) and the cylinders fit...$3,011.36 - $3,121.16 -
On Sale
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)
S&S Cycle
MSRP: $1,489.95Now: $1,436.36Was: $1,595.95S&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,...MSRP: $1,489.95Now: $1,436.36Was: $1,595.95 -
On Sale
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)
S&S Cycle
MSRP: $1,219.95Now: $1,124.96Was: $1,249.95S&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,...MSRP: $1,219.95Now: $1,124.96Was: $1,249.95 -
On Sale
S&S Cycle - Silver 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines
S&S Cycle
MSRP: $1,449.95Now: $1,435.46Was: $1,594.95S&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...MSRP: $1,449.95Now: $1,435.46Was: $1,594.95 -
On Sale
S&S Cycle - Silver 110" Bolt-In Sidewinder® 4" Big Bore Kit fits '07-'17 Twin Cam Engines
S&S Cycle
MSRP: $1,449.95Now: $1,211.36Was: $1,345.95S&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...MSRP: $1,449.95Now: $1,211.36Was: $1,345.95 -
On Sale
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)
S&S Cycle
MSRP: $1,219.95Now: $1,124.96Was: $1,249.95S&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,...MSRP: $1,219.95Now: $1,124.96Was: $1,249.95 -
On Sale
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)
S&S Cycle
MSRP: $1,489.95Now: $1,436.36Was: $1,595.95S&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,...MSRP: $1,489.95Now: $1,436.36Was: $1,595.95 -
On Sale
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)
S&S Cycle
Now: $1,511.96Was: $1,679.95S&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)...Now: $1,511.96Was: $1,679.95 -
On Sale
S&S Cycle - Wrinkle Black 100" Bolt-In Sidewinder® 4" Big Bore Kit fits '99-'06 Twin Cam Engines
S&S Cycle
MSRP: $1,409.95Now: $1,395.86Was: $1,550.95S&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...MSRP: $1,409.95Now: $1,395.86Was: $1,550.95