I took my car across the flight line today and hit about 120mph and slowed down and when I put my clutch in, the pedal was practically dead.. I thought my clutch went out but after pumping it a few times it was back to normal. I tested it again, I went up to about 110 and slowed back down and the same thing happened. It doesn't do this under normal driving conditions (yet), what would be causing this? Is this a pre indicator of something happening?

There was no hard braking when I slowed down either, as a matter of fact I let it coast back down to about 80 before I even hit the brakes.. and I wasn't slipping the clutch. I have never had this happen (except when the clutch goes out in a car) and then go away like this.

 

Check your clutch fluid level and clutch line (for leaks). If its fine, try bleeding the clutch and see if it continues. If it does continue, I'd suspect the slave.