BMS Differential Support Bracket Brace for BMW 135i and E9x 335iBolt on improved traction The BMS brace attaches the rear differential to the subframe allowing better launches, less wheel hop, and a more stable feeling rear chassis. Our unique one piece construction eliminates welding weak points common on other similar units. No logos or markings are visible for a stealth appearance. FEATURES AND BENEFITS Tightens chassis Reduces wheel hop Reduces differential bearing Load Stainless steel hardware included One