Originally Posted by Mike Whiskey 76

Alright gang, after some serious trying to get caught up on work and honey-do's, time to get some racing in. Right now I'm going to run my truck a bit towards heavy with chassis side guards and dual shorty packs in parallel. I'm still playing with diff settings and I think I got the shocks figured out.

Question I have is, what is the effect of the O-rings in the diff? I think I've only ever built one other gear diff with o-rings but never really grasped there purpose as a tuning aid.