Return to your Harley-Davidson's roots with Dresser Duals Exhaust by Vance & Hines. These 1-3/4" head pipes will give your Touring motorcycle a throatier growl while the 2-1/8" 220° full-coverage heat shields keeps your pipes from turning blue. These Dresser Duals can be paired with any Vance & Hines or stock slip-on mufflers (sold separately). You can also order them in chrome 541-414 for a totally different look. Either way, the classic true dual design will be significant upgrade to your bike's looks, sound, and performance at a great price.; Head-turning appearance, plus a noticeable improvement in performance and sound Full-coverage heat shields Compatible with any Vance & Hines or stock slip-on mufflers (sold separately). Ported for O2 sensors. Pre-2007 Harley-Davidson models will also need O2 sensor plugs 443-405, sold separately Metal exhaust port gaskets are not shipped with these Dresser Duals, and must be purchased separately 4400281 Purchase of the Vance & Hines Fuelpak (or Fuelpak FP3 for 2007 and later models) is recommended by Vance & Hines when installing their Dresser Duals on engines with electronic fuel injection