" indicate the difficulty level for installing the product.Performance pipes with a twist, Jug Huggers have the right mix of air flow and back pressure to make for increased performance and incredible sound. The stepped header design comes standard with an 02 sensor port for after market fuel management. The oversized removable heat shield gives the Jug Huggers a 2 1/2" fat look. Max-Flow performance baffles and chrome billet aluminum end caps are standard. Optional stealth baffles, or torque chambers give you the option of getting the right performance from your motorcycle.Performance pipes with a twist, Jug Huggers have the right mix of air flow and back pressure to make for increased performance and incredible sound. The stepped header design comes standard with an 02 sensor port for after market fuel management. The oversized removable heat shield gives the Jug Huggers a 2 1/2" fat look. Max-Flow performance baffles and chrome billet aluminum end caps are standard. Optional stealth baffles, or torque chambers give you the option of getting the right performance from your motorcycle.