The Power Tune XTO Insert Tuner Kit includes all of the muffler inserts available to tune and customize your Power Tune XTO Exhaust System for the ultimate power and sound. Includes two each of the 1.375", 1.50", 1.625", 1.75", 1.75" plugged, 1.75" plugged with front 3.5mm hole, 1.75" plugged with rear 3.5mm hole, 1.875", 2" and 2.25" inserts.
