760441 Fits Twin Cam 2007 2017 Black

This S&S 117-cubic-inch big bore cylinder kit is a serious performance upgrade for Dyna, Softail, Touring, and Trike models originally equipped with 96 or 103-inch Twin Cam engines. These 4 1/8-inch bore cylinders are designed to be slightly shorter than stock to ensure you won't run into frame clearance issues during installation. The pistons are plated for durability and feature Wiseco ArmorGlide coating on the skirts to reduce friction. Because the piston weight matches the stock components, no rebalancing of the flywheel is required. You can reuse your original heads, oil pump, and cam cover, though you will need to machine the crankcases to accept the larger cylinders. Note that 2014–2016 Twin Cooled Touring models require a separate head gasket set.