BORLA has developed a revolutionary exhaust technology that enables our engineers to deliver unprecedented vehicle-specific control over the acoustical note of an exhaust throughout the RPM range while retaining 100% of the power-adding capabilities of BORLAÂ'S patented multicore design. Called ATAK (Acoustically-Tuned Applied Kinetics) this technology produces the highest available dB (decibel) levels in the BORLA street-legal lineup and is designed for high-performance purists who prefer exhaust notes over their stereos. The focus of ATAK is to pump the volume while retaining clarity of sound avoiding distortion typically found in louder exhausts. With ATAK the sound output is tuned like a graphic equalizer to shape and focus sound waves for optimum high-volume output. The development of each ATAK system begins with extensive study of each vehicle's acoustical properties. The technology is based on custom-tuned attributes of the internal muffler cores which are calibrated on a vehicle-by-vehicle basis to deliver the most desirable sound. "The distance from the exhaust manifold to the rear bumper the shape of the underbody shielding the amount of ground clearance all these factors affect the sound and they're different on each vehicle. With ATAK we take all this into account and the result is amazing" says company VP of Sales & Marketing David Borla. "The 2.5" diameter Cat-Backâ„¢ systems (PN 140329 and 140372) will blow your socks off – with no drone." The system features single mirror polished 4" round angle-cut rolled edge 12" long bright chrome on T-304 stainless steel tips on each muffler. Merge X-Pipe (PN 60510) can be added to this system. Like all BORLA Cat-Back and Axle-Back systemss each is handmade in the USA by master craftspeople and features premium high-quality austenitic T-304 stainless steel construction ultra-smooth mandrel bent piping and a Million-Mile Warranty.