Dual Exhaust - Straight Mufflers Features 16-gauge steel construction throughout, 1 -3/4" headpipes flow into 2 -1/4" muffler bodies for increased flow and improved performance, Designed to increase low-end torque and produce a deep, throaty exhaust note, Includes heat shields for the headers, mounting brackets, hardware, O2 sensor ports and plugs, Made in the U.S.A., Includes 12 mm and 18 mm O2 sensor ports
