RE: Exo Terra build questions and comments
The O-rings I use for taking the slack out of dogbones are for .15 nitro carbies, 6mm diameter abnout 1.5 thick. I find fuel tube offers a fraction more compression then the O-rings. Shock o-rings are the same size from Traxxas , duratrax or Acme shocks, sure other brands will have the same size in there stock.