Mirrors are compatible for Harley Davidson underbar, no flip kit required. (Not for every Harley though, please check your rear view angle to decide.)
The mirror plate and stem are constructed very well with CNC machined 6061 aircraft aluminum. About half the size of the OEM mirror. A 15-degree viewing angle more with the aspheric convex lens.
The simple & basic design makes your bike a little bit fresher as you can see.