This Super Stock® T2 wrinkle black crankcases is for 2007-'16 HD® FL big twin engines with stock bore and stock bolt pattern. Simple transmission case modificiations is required. Features & Benefits CARB Compliant- EO# D-355-18 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)NOTE: Some applications EXEMPT PER CARB EXECUTIVE ORDER (E.O.) D-355-18 FOR 07-16 MODELS. Specs PRODUCT NAME ENGINE CASE BASE COLOR BLACK COLOR/FINISH BLACK / POWDER-COATED BORE SIZE 3.750" UNITS EACH FINISH POWDER-COATED RIDING STYLE STREET