This Super Stock® T2 wrinkle black crankcases is for 2007-'16 HD® FL big twin engines with 4-1/8" bore and stock bolt pattern. Simple transmission case modificiations is required. FEATURES AND BENEFITS • Stock looking, but stronger – Thicker wall sections and superior 356-T6 aircraft grade aluminum • Tough powder coat finish • Reinforced front motor mount for extra strength • Timken® sprocket shaft bearing – Strong enough for the most demanding applications • Clearanced for strokes up to 4 13/16" and cams up to .720" lift • Includes pinion and Timken® bearing • Manufacturer’s Statement of Origin (MSO) included • Includes studs and cam bearings installed KIT CONTENTS • S&S crankcase • Bearings and hardware • Instructions INSTALLATION PARTS • S&S oil line kit (required) • S&S transmission drilling fixture kit (recommended for easy installation)