Stepped headers merge into a true reverse-cone megaphone muffler 1-3/4" headpipe steps up to 1-7/8" into the collector to increase flow and improve performance Removable spiral-core louvered baffle included Include mounting hardware Short, 12" muffler length Heat shields included Compatible with floorboards Made in the U.S.A.. EXHAUST RR2-1 EVO FXRT BK