Universal. Reversible Design. 2.5" I.D. Inlet/ 2.5" O.D. Outlet Hydroformed SwithFire® X-Pipe. Hydroformed Center Section provides a lower profile 21.1" Long x 7.8" Wide x 5.5" High. 4" Centerline spacing If clamping Un-Notched Inlet necks, use wide (2 bolt style) band style clamps. Use 1" wide band clamps 18325.on Notched Outlet necks