I have been using it with the RJM clutch pedal for ~6 months and 10K miles. No issues whatsoever. I've got a little bit of dead space at the top of the pedal, but I think it's because of how I have it adjusted. When I called Z1, the guy I spoke with on the phone said it was probably normal, but also acknowledged that he didn't know of anyone else who was running the RJM pedal with this kit. Either way, the dead space is minimal and doesn't bother me