In 2001 Vance & Hines decided to make a 2-into-2 exhaust system that would perform like a 2-into-1, the result is Vance & Hines hidden crossover appropriately named the Power Chamber. Big Shots for the Suzuki Boulevard M109R is a 100% Blue Proof system designed specifically to harness the full potential of this model. With 2 1/2” head pipe heat shields and oversized 3” muffler bodies, when you twist the throttle you’ll wonder if it is even the same motorcycle.