This 4 1/8" bore wrinkle black crankcase is specially machined for the new S&S oil line installation kit for 2006-2017 Harley-Davidson® Dyna® models. Stock looking, but stronger - Thicker wall sections and superior 356-T6 aircraft grade aluminum.
41/8 and 4.425" bore crankcases to be used as a foundation for a custom engine or replacement for T111, T124, or T144
Timken® sprocket shaft bearing - Strong enough for the most demanding applications
S&S Cycle 06-17 Dyna Models w/ 4-1/8in Bore Stock Bolt Pattern Crankcase
Clearanced for strokes up to 4 13/16" and cams up to .720" life
Manufacturer's Statement of Origin (MSO) included
Reinforced front motor mount for extra strength
Stock bore replacement for 06-17 Dyna models
Includes studs and cam bearings installed
Wrinkle Black, 4-1/8", Fits 06-17 FXD
Includes pinion and Timken® bearing
Tough powder coat finish