This dual 2.5 in. diameter Borla Cat-Back system features an internal H-Pipe inside the front muffler and Borla's patented Polyphonic Harmonizer technology for increased performance and improved sound. Borla's Polyphonic Harmonizer Technology utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full-bodied sound. The ATAK sound level delivers an aggressive, head-turning sound without any drone inside the cabin. The rear section of this exhaust system incorporates Borla's patented SwitchFire design, and a single 4.5 in. round black chrome on T-304 stainless steel tip on each tail pipe. Completely eliminating the turbulent center intersection of a standard X-Pipe, Borla's patented SwitchFire design truly blends the combustion pulses from both sides of the engine for improved performance and a custom sound. Using Borla Stainless Steel Polish p# 21461 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. Borla Cat-Back and Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla Sound of Power respected by motoring enthusiasts everywhere. Ultra-smooth mandrel bends ensure maximum a flow and power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit.

140978BC ATAK Cat-Back Exhaust System Features:

• 2.5 in. diameter
• Single 4.5 in. round black chrome on t-304 stainless steel tip on each tail pipe
• Using borla stainless steel polish p# 21461 is not recommended with these black chrome tips
• We suggest cleaning the tips with hot water and a microfiber cloth
• Built from premium t-304 stainless steel
• Borla system is a true dual design
• Front muffler contains an internal h-pipe
• System contains polyphonic harmonizer technology
• Rear muffler has been replaced with borla's patented switchfire rear section