Originally Posted by 40 to 332

I also experienced this problem on my 2013 Z. It appeared after about 200 to 300 miles, lasted for a couple of days and then disappeared. Based on a quick inspection, it appeared that the push rod in the pedal assembly was catching on something in the master cylinder. Anyway, with what I read in the forum about problems with clutch shudder and feel, I said forget this and went with the RJM pedal assembly. If you can put up with the 3-4 hours installing the RJM assembly in very cramped quarters, it is well worth it. The clutch pedal operation and feel are much improved over stock, with a virtual absence of any shudder. The push rod operates smoothly, with no sticking or catching.The installation instructions were clear. I highly recommend it. That said, it you prefer to stay with the stock assembly, I'd have the problem checked out while the vehicle is under warranty.