The "Girth Brooks" twin tube design from TRZ are for cars exceeding 1800 HP. Comes with all the same features of the standard ARB. But has an additional 2 1/4 in. Chromaly outer tube.
For High Horsepower application get the Anti-Roll Bar with billet arms. TRZ Anti-Roll Bars are tig welded chrome-moly construction that make them strong as well as light. With a 1 5/8" diameter inner bar and 2 1/4 in. outer bar the ARB will keep your launches strait with more effcient weight transfer and no body roll. All TRZ Anti-Roll Bars come with Chrome-molly teflon lined rod-ends. All ARB kits include the necessary mounting hardware, ARB Links, and the End Caps. Welds between stock frame rails or rear cage downbars.