You ever see a comp buggy flip over backwards? how hard on a rig are you? those things are on full size rigs also. if you ever get a chance to work on a zuk take a look at some of the metal thickness on most of the parts, I believe the shafts on those are hardened steel and the seals have gone through alot of changes over the years, I remember running marvin shaw shocks back in the late eighties early ninties when you had to get together with a bunch of your friends and throw them all on the table and match them up in pairs to get closer lenthes on them, LOL it's been a while sence then. but we ran over a hundered miles an hour with them in the dunes all the time, still have my 11 second four seater in the barn, sold the fast one.