S&S Cycle 06-17 Dyna Models w/ 4.425in Bore - 4 3/8in Bolt Pattern Crankcase - Wrinkle Black

Starting with a 4.425-inch bore and a 4 3/8-inch bolt pattern, this S&S Cycle crankcase is built for serious performance on your 2006-2017 Harley-Davidson Dyna models. It's specifically machined to work with the S&S oil line installation kit, ensuring a clean setup. While it looks like a stock replacement, the thicker wall sections made from 356-T6 aircraft-grade aluminum make it considerably stronger, ready to handle custom engine builds or serve as a robust replacement for T111, T124, or T145 engines.

This crankcase is designed to accommodate strokes up to 4 13/16 inches and cams with up to .720-inch lift, giving you plenty of room to build a powerful engine. It features a reinforced front motor mount for added rigidity and comes with the Timken sprocket shaft bearing already installed, which is known for its strength in demanding applications. The wrinkle black powder coat finish not only looks sharp but is also tough, resisting wear and tear. You'll also receive the Manufacturer's Statement of Origin (MSO) to go with your new crankcase.

This unit includes the necessary studs and cam bearings, as well as the pinion and Timken bearings, making it a comprehensive foundation for your engine project. It's a direct replacement for stock bore crankcases on 2006-2017 Dyna models, offering an improved foundation for performance upgrades.