2012 G37s coupe 6mt with 75,000 miles. Brand new Z1 Motorsports Road Race v2 Clutch and Flywheel kit with the new heavy duty Billet Clutch Slave Cylinder installed about 3 months maybe 1,500-2,000 miles ago. Car drove fine over the weekend. Got in this morning before work and my clutch pedal was on the floor. At work now and didn’t have time to inspect. Any ideas?

 

If I had to guess I would say master cylinder because I’ve replaced everything else