S&S, 99-06 crankcase assembly, 3-3/4" STD bore. Black - 99-06 Twin Cam (excl. 2006 Dyna) (NU) 590139 2 screws and 1 gasket

2 screws and 1 gasket

like MCS 968144 (with factory alarm) or 968145 (without factory alarm)

For single-disc brake systems

Load-Independent Indicator Relay

slash cut end

S&S, 99-06 crankcase assembly, 3-3/4" STD bore. Black - 99-06 Twin Cam (excl. 2006 Dyna) (NU) 590139 2 screws and 1 gasketReplacement crankcases for Touring and Dyna Twin Cam engines. Offered is greater overall strength than OEM cases, especially in the front motor mount, which is an important consideration in high performance applications. CNC machined from high strength heat treated aluminum castings make these S&S cases much more cost effective than billet cases. A Timken style sprocket shaft bearing is used to best withstand the most demanding applications. All oil