Originally Posted by aisr
I've tested many a T5 to the point of failure. My experience is that anytime the durability of your clutch goes up, the durability of your T5 goes down.
3rd gear is most likely to fail, probably because it's narrower than 1st/2nd, and out in the middle of the case where a little flex will allow it to move farther away from the cluster. That flex moves the tooth contact area closer to the tips of the narrower teeth, making them more likely to break. A little clutch slip on engagement (and a lighter flywheel), will help smooth out those destructive torque spikes. Here's a link to info on an inexpensive clutch slipper that can help you get the most out of your T5...
Clutch Slipper Pics/info
OMG Its such a simple device but so freakin brilliant. Thanks for the link bro i think you just saved my T5 from getting destroyed a second time.