Banks Monster Exhaust is formed of 4 inch stainless heavy-wall tubing with mandrel bends to maximize airflow, minimize backpressure and lower exhaust gas temperatures. The system safely clears the spare tire, shocks and brake lines. Includes a 5 inch round tip. Adjustable clamp for positioning on tailpipe. (And to help keep the tips looking good, there's a 1/2 inch air gap to keep heat from tarnishing the finish.).