A sophisticated Touring Edition Axleback Exhaust.|Features AWE?s proprietary drone-canceling solution, 180 Technology?|Max gains of 13 hp and 13 lb-ft of torque at the crank|Handcrafted from 3? U.S.-sourced CNC mandrel-bent T304L stainless steel|80mm double-walled tips available in chrome silver or diamond black|3D-printed bolt on marking template allows for perfect ?quad tip? bumper cut if desired (available for both Non-M Sport and M Sport 428i cars)|Direct bolt-on for factory-like simplicity|Engineered, designed and manufactured in-house at AWE|Perfect fitment - guaranteed|No Check Engine Light - guaranteed|Featuring the AWE Lifetime Exhaust Warranty