Still in the box. Ride Sunday. I sent back the C4 to Revzilla due to the pinlock issue. It would not fully seat. So...….it was corrected on later runs. You figure the German QA was better. Revzilla called me saying they cannot replace the C4 as all the ones in stock have same issue. I ordered a new one from rockymountianatv overnight for 20 bucks. Only reason is I purchased the Sena SC! module with is C4 specific and it just arrived yesterday from Germany. It was 125 bucks cheaper than Revzilla.