Product details:

Stepped headers merge into a true reverse-cone 4Megaphone Can muffler 1-3/4headpipe steps up to 1-7/8into the collector to increase flow and improve performance Removable spiral-core louvered baffle included 18 mm and 12 mm O2 Ports with adapters and plugs Includes mounting hardware Stepped headers merge into a true reverse-cone 4Megaphone Can muffler. 1.75headpipe steps up to 1 7/8into the collector to increase flow and improve performance. Removable spiral-core louvered baffle included. 18 mm and 12 mm O2 Ports with adapters and plugs. Includes mounting hardware.