Borla 08-11 BMW M3 Sedan 4.0L 8cyl 6spd/7spd Aggressive ATAK Exhaust (rear section only)

ATAK, Acoustically-Tuned Applied Kinetics, technology is based on specifically-tuned attributes of the internal muffler cores, which are calibrated on a vehicle-by-vehicle basis to deliver the most desirable sound. This is our most aggressive sound. Even though the sound on the exterior is uncompromising, the sound in the cabin is devoid of harsh resonance, a product of painstaking engineering and over 30 years of experience. ATAK Axle-Back Exhaust System. Million Mile Warranty 2008-2011 BMW E90 M3 Sedan 4.0L V8 Automatic/ Manual Rear Wheel Drive 4-Door