I take it that the issue is the 300's damper piston is 1mm larger O.D. so the step in the bottom of the emulator doesn't fit tight. The image of the adapter shows a plain steel sleeve that would seem to fit the emulator step but has no step of its own. That would seem to allow it to slide to the side atop the damper and rub inside the fork tube. Someone stated they weren't needed and Race Tech implied they were just to make a better seal against the damper piston. Anyone have ideas or images? $20 for a pair of those are a bit much.
