Hard-Krome 3 Inch Big Straights - Chrome 45-4850 for Yamaha Stratoliner 1900 (2006-12) Guaranteed not to discolor for 1-Year All Hard-Krome exhaust pipes feature patented doublewall design Welded construction - No Hose Clamps! CNC machined, polished and chrome plated billet aluminum end cap 16 ga. steel tubing outer pipes