The K-drives come with brackets that're intended for a HD dyna, and a bag of bits to make them suit our bike. This includes two different sets of "adapters" for use with or without a sissybar.

I got the K-Drives to replace my old Saddlemen Drifter bags, and have been very pleased with them. The mounting system is stable and secure, you don't have to fiddle around to get the bags onto tiny little pegs, and nothing tears because you've adapted bags to do something they weren't intended to. It's true the brackets are bigger than the EZ bracket posts but they blend in well and don't look obvious, and I'd rather have the larger brackets if it gets me the sturdier mount.