The Borla 11789 is the rear section of the S-Type exhaust system for the 2011-2012 Ford Mustang GT with the 5.0L 8-cylinder engine and 6-speed manual or automatic transmission in RWD configuration. It replaces the factory rear muffler and tailpipe assembly and keeps the stock front section in place, so you can upgrade the sound and exhaust flow at the back of the car without rebuilding the whole system. Because the S-Type is a Borla line, it is built to match Borla's cat-back layout, which is why buyers searching for a 2011 2012 Mustang GT rear exhaust section or an S-Type axle-back replacement often choose it. Confirm the exact spec sheet and exhaust tip styling with the manufacturer before you order.
Compared with a stock muffler, a Borla rear section gives a deeper, more aggressive tone and a sportier look at the tips, which is the main reason enthusiasts pick it. Compared with a cheaper universal muffler, a Borla-branded part is designed to fit the factory hangers and mounting points on this specific chassis, which reduces the cutting, welding, and modifying a generic pipe often requires. Check the manufacturer's material and warranty details before comparing it with lower-priced options.
