ISR Performance - SERIES II - MBSE Resonated Modular Cat back exhaust system - BMW E36 (IS-S2MBSER-E36)The ALL New ISR Performance Series II MBSE exhaust is an incredibly stylish and aggressive exhaust system at an affordable price. Constructed of high quality stainless steel, the MBSE utilizes dual 2. 5" mid pipes that mate to a resonator then a 3" section out to a dual 2. 5" tip muffler section. Utilizing our all new Series II construction, the E36 MBSE features pipe routing that increases ground clearance so you can have a stylish exhaust without