The factory chrome outer primary chain case on my FLSTC was always a source of leaks, and - to make matters worse - the steel screws that held on the derby and inspection covers were set in unlined aluminum holes. That little H-D cost-cutting measure means that when the screws are torqued to factory specs the threads in the case are often ruined. I'm happy to say that my new Drag Specialties cover has steel liners in the screw holes and, unlike H-D's stock cover, it came with the starter bushing already installed, which saved me from having to buy the bushing and find someone with a shop press to install it. Last but certainly not least the Drag Specialties chrome finish matches the factory chrome on my bike and the price of the new cover was about $200 less than the cheesy stock equivalent. I like it.