SLG - BMW E36 Wilwood Dual Caliper Bracket Kit*Handbrake Line Kits sold separately* The Original BMW Dual Caliper Solution! Patent No.: 11,015,667 This dual caliper bracket kit is the easiest and least intrusive way to install a true Formula Drift style secondary dual caliper hydraulic handbrake setup. Mad skids have never been easier! Dont use an in line system; they lead to constantly changing brake bias and inconsistent pedal feel. Our standalone dual caliper kits offer the best performance