Floating Front Brake Rotor 03 Heritage Springer
, but the EBC FSD010 is not one of them 
The uniqueness is that they use a 1999-earlier caliper on a 2000-later wheel that has a larger rotor "locator" on the hub.
The concerns are the rotor's brake pad "swept" area. It must be wide enough for your "1999-earlier" calipers also used on 2000-later springers.
So...This is is too "skinny"

But This is Good

http://www.harley-davidson.com/store...03-4435900a--1
What's the problem?
EBC apparently made it wide enough so it works for the 1999-earlier pad sizes as well as the 2000-later.
Harley doesn't do this for most of their OEM rotors...for example, you couldn't take a OEM 2000-later non-floating rotor, let's say off of a std Heritage and install on your springer and expect to have full pad contact. Your pads would "hang off" towards the inner radius
The 2000-later OEM front rotors for springers are somewhat unique (see photo below)
Has the appearance of the everywhere-everyday 1999-earlier brake disc, but with the 2000-up larger ID hole for sealed bearing hubs.
That's why the "-00" part #








