S&S, 99-06 crankcase assembly, 4-1/8" bore. Polished - 99-06 Twin Cam (excl. 2006 Dyna) (NU) Rear wheels 18 inch Fits with up to 1-3/4"

Fits with up to 1-3/4" diameter frame tubes

MECHANICAL CLUTCH ONLY

7mm) thick

CNC machined aluminum air cleaner insert for stock round air cleaners

16-17 Fat Boy S FLSTFBS

S&S, 99-06 crankcase assembly, 4-1/8" bore. Polished - 99-06 Twin Cam (excl. 2006 Dyna) (NU) Rear wheels 18 inch Fits with up to 1-3/4"With S&S cylinder stud pattern. Replacement 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