08-13 YAMAHA XV19CS: Vance & Hines Big Radius 2-Into-1 Exhaust (Chrome) Big Radius 2-into-1 breaks the mold and delivers white-knuckle performance with style unlike anything from the competition and anything you have ever experienced before. With full-coverage heat shields in either chrome or black, Big Radius 2-into-1 will keep its show-quality finish whether at the dragstrip or on the boulevard. Don't let the good looks fool you, once you turn it on, make sure you hold on tight as you rule the open road. Radius style, 2-into-1 performance. Broad / usable torque increase.