"Shift kits can increase the chance of hard part failure but they do keep the clutches from slipping and burning."
This is a general term. Doing almost anything to your car will change how it acts/performs/lasts/fails. The alternative to "hard part failure" is a slow shift, causing added heat, triggering the CEL, and going full line pressure. Not saying a hard part failure won't happen, but it is far and few between.
With that being said, I am ending year 4 of having my shift kit installed. My tranny is still working the same as it was 4 years ago. The shift kit is a bandaid, so we all have to plan for a new tranny eventually.
