Vance & Hines announces BIG SHOTS for Honda's VTX 1800, VTX 1800 Retro, Vulcan 1600 and Yamaha's Road Warrior. After extensive R&D and testing, Vance & Hines developed the Big Shots performance exhaust systems featuring our race-inspired Vance & Hines Power Chamber - a unique crossover system that offers all the performance advantages of a 2-into-1 race system yet retains the intimidating look of 2-into-2 drag pipes. These Big Shots not only replace the excessive bulk and weight of the stock systems, but substantially increase horsepower and torque. Big Shots feature massive 2.5"" full-coverage heat shields that are virtually ""blue-proof!” Big Shots also include the traditional Vance & Hines amenities: hot rod sound, racy billet end tips (VTX original only), removable baffles, complete mounting hardware and easy to understand installation instructions. Vance & Hines recommends the use of a calibration kit for fuel injected bikes or jet kit for carbureted bikes. Power Commanders come with an exact fuel map for the Vance & Hines exhaust system you are running to properly map your bike.