These redrock x mesh grille inserts are for those of you that have and up jk and are looking up to change up the look of the front of your jeep, as well as add little bit of protection to your radiator, all without changing up that iconic sevenslot grille.Extremeterrain no longer carries the teraflex .in. lift kit / shocks ( jeep wrangler jk door). please check out jk jeep wrangler ” lift kits for an updated selection. Introduction. so you want to buy an f and do not know which bike is for you? or you want to know the differences between the bikes? this faq contains information about the differences between the bikes, and what to lookout for when you purchase the bike.