Well, baka ginamit yung HA sa rally! Seriosuly, I've never heard of any coil-over shock failing if used in its as stated or recommended usage. In my friend's Evo 5, he's been using 2nd hand TEINs for about 2 months and have gone through 2 trackdays and 3 funruns and so far its OK pa naman. Of course when he ogt it OK pa siya diba? Kasi kung hindi, he wouldn't have gotten them at all. (DUH!)

Baka yung pillow-ball mounts ang nasira since its metal-to-metal contact palagi.

If so, ALL coil-overs have a tendency to mess up their pillow-balls in a short period of time.