This cat-back exhaust is manufactured exclusively to Autotech’s specifications by Magnaflow. Overall piping diameter is 2.5″, which makes for a smooth and unobstructed flow of spent exhaust gases without sacrificing low-end torque. Autotech claims that although many systems only use 2.25″ piping, their 2.5″ exhaust tubing yields increased peak horsepower in higher RPMs. Read More »