V&H Dresser Duals Pcx Black Touring 17-23 (Was V47651)V&H Dresser Duals Pcx Black Touring 17 23 (Was V47651) For the clean classic look of true dual head pipes, Vance & Hines Dresser Duals are the only choice. The secret to Dresser Duals lies under the heat shields, with our proprietary Power Chamber hidden crossover that boosts performance over traditional true dual head pipes. On top of that, Dresser Duals now also feature our innovative PCX Technology which utilizes chambered high flow catalysts and