I have an extra set of 50mm aftermarket race clipons with replaceable bars. I don't remember what brand. I got em a while ago for a project that never came through and they've been sitting in the package since. They are brand new, never used, never mounted. Still in packaging the way I got em.
The pic is just to show you kinda what they look like, but it is not exactly what I have cuz the pic shows some smaller diameter clamps (I didn't wanna unpack mine). The ones I have are 50mm to fit larger inverted forks.

$ wise I just want what I paid... 140 bucks... PM me if interested