760434 Crankcase Sets for 4 3 8 Bore with S S Cylinder Base Pattern

For the ultimate high-performance build on a 2007 to 2016 Touring or Trike model, these S&S Cycle crankcases provide a foundation far stronger than stock. Cast from 356-T6 aircraft-grade aluminum, these cases feature significantly thicker wall sections and reinforced front motor mounts to handle extreme power. They come ready for assembly with cylinder studs and cam bearings already installed, and they utilize a heavy-duty Timken sprocket shaft bearing for superior durability. These cases are powder-coated for a clean look and are pre-clearanced to accommodate strokes up to 4 13/16 inches and camshafts with up to .720-inch lift. Please note that installation requires a small modification to the stock transmission housing and the separate purchase of an oil line routing kit. This is the professional choice for builders who demand a crankcase that can withstand the rigors of a high-displacement, high-torque Twin Cam engine.