Vance & Hines Big Shots Staggered Exhaust For Harley Dyna Your bike didn't come with catalyst from the factory, so why add one These classic pipes feature a hidden Power Chamber crossover designed to equalize pressure and generate scavenging effect just like a 2 into 1 system. Now re-released to fit pre-catalytic years on early model big twins, you can experience the throaty growl you desire from your v-twin machine. Features: CNC machined billet end caps Hidden Power Chamber increases performance Full coverage 220 heat shields Removable baffles and mounting hardware included Made in the USA Note: The selected finish/color refers to the full-coverage heat shields. The underlying header pipe finish/color may vary. Once installed, the selected color will be the primary visible finish.