4 - inch stainless mandrel - bent system. Safely clears spare tire. Huge polished Chrome or Cerakote Black tips. The 4 inch intermediate pipe and tailpipes are formed of 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. Monster duals include exclusive 6 X 5 inch ob - round (patented design) polished - stainless angle - cut rolled - edge tailpipe tips (with your choice of high temp Black or chrome - over stainless), while Monster singles include a 5 inch round tip. Adjustable clamp for positioning on tailpipe. And to help keep the tips looking good, there's a 12 inch air gap to keep heat from tarnishing the finish.