S&S Cycle Stock Bore Crankcase For Dyna This S&S Cycle Dyna Crankcase is built to deliver more strength than a stock-style case while maintaining a clean factory appearance. Made from 356-T6 aircraft-grade aluminum, it features reinforced mounting, thicker wall sections, a Timken sprocket shaft bearing, and durable wrinkle black powder coating. Features: Stock bore replacement for 2006-17 Dyna models Stock looking, but stronger Thicker wall sections and superior 356-T6 aircraft grade aluminum Tough powder coat Wrinkle Black finish Reinforced front motor mount for extra strength Timken sprocket shaft bearing which is 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) will be shipped separately Includes studs and cam bearings installed Requires oil supply line installation kit 10212638, sold separately Made in the USA