S&S CYCLE 131" Hot Set Up® - 4-5/8" Stroke - Black Granite w/Highlight - M8 320-0623

131" Hot Set Up® - 4-5/8" Stroke - Black Granite w/Highlight - M8
Updated profile eliminates frame and lifter block clearance issues, Original engine serial numbers are retained, Powder coat finish matches factory finishes, Retains stock engine height, Includes 131" cam cover badge, Bolts in with no machine work for '17-'25 Touring models equipped with standard factory 114" or 117" M8 engines that feature 4-5/8" stroke from the factory., Requires crankcase split and component upgrades to fit '17-'25 M8 Touring 107" models and '18-'25 Softail models., Specifically engineered for a 4-5/8" stroke. Must be paired with an aftermarket 4-5/8" stroker flywheel assembly to achieve 131" displacement on 107" and Softail models., Works with stock crankcases: Cylinder spigots are designed to slide into the original factory cases., Cylinders and pistons kit only, flywheel sold separately.