Softail

DescriptionBolt-In Sidewinder 4" Big Bore KitsBolt in - no machining, balancing or splitting the crankcases; install can be performed with engine s...

DescriptionBolt-In Sidewinder 4" Big Bore KitsBolt in - no machining, balancing or splitting the crankcases; install can be performed with engine s...

DescriptionBig Bore Cylinder KitThe Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split exis...

DescriptionBig Bore Cylinder KitThe Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split exis...

DescriptionBig Bore Cylinder KitThe Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split exis...

DescriptionTwin Cam 3.875" CylindersBig bore 3.875" cylinders feature cast-iron linersCan be used for 95", 103" and 106" kits"Made in the U.S.A.Req...

DescriptionTwin Cam 3.875" CylindersBig bore 3.875" cylinders feature cast-iron linersCan be used for 95", 103" and 106" kits"Made in the U.S.A.Req...

DescriptionBig Bore Cylinder KitThe Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split exis...

DescriptionBig Bore Cylinder KitThe Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split exis...

DescriptionBig Bore Cylinder KitThe Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split exis...

DescriptionBig Bore Cylinder KitThe Big Bore kit yields excellent results with stock cylinder headsEasy installation: no need to bore or split exis...

DescriptionCylinder & Piston Kit for 106" Stroker Motor103" stock motors or motors with factory 95" kits require piston kit only; stock or S&am...

DescriptionCylinder & Piston Kit for 106" Stroker Motor103" stock motors or motors with factory 95" kits require piston kit only; stock or S&am...

DescriptionEvolution-Style Aluminium CylindersStock replacement cylinders, 3.5" bore with cast-iron linerFor 80" or 89" enginesMade in the U.S.A.De...

DescriptionPerformance Replacement HeadS&S heads are available to be used with stock-style flat-top pistonsKits are fully assembled, and includ...

DescriptionPerformance Replacement HeadS&S heads are available to be used with stock-style flat-top pistonsKits are fully assembled, and includ...

Description79cc Super Stock™ Cylinder HeadMust use S&S rocker boxes (PART #90-4110) if S&S compression releases are used.High port flow giv...

DescriptionSuper Stock™ Cylinder HeadsHigh port flow gives great performance now, and more later when additional upgrades are doneHeads are fully a...

DescriptionSuper Stock™ Cylinder HeadsHigh port flow gives great performance now, and more later when additional upgrades are doneHeads are fully a...

DescriptionPerformance Replacement HeadS&S heads are available to be used with stock-style flat-top pistonsKits are fully assembled, and includ...

DescriptionPerformance Replacement HeadS&S heads are available to be used with stock-style flat-top pistonsKits are fully assembled, and includ...

DescriptionSuper Stock™ Cylinder HeadsHigh port flow gives great performance now, and more later when additional upgrades are doneHeads are fully a...

DescriptionHeadbolt KitIncludes eight 3.374" headbolts and eight .100" washersFor use with S&S Twin Cam-style heads and custom applications tha...

DescriptionMagnetic Headbolt CoverSpecially designed for S&S headboltsNot for stock headboltsMagnets hold covers in place; no setscrews neededM...