Welcome to B & E Performance Super Flow Mufflers makers of modified custom Harley Davidson® exhaust mufflers. We have been modifying Harley® exhaust systems since 1985 with over 17,000 sets to our credit. We are centrally located in the Midwest for fast shipping service worldwide and we only employ the best American union certified welders and journeyman machinist for accurate precise work. All of our work is performed in house to avoid product back order. We only sell custom made high performance super flow mufflers. These are the real deal, not junk knock offs. These are genuine custom made super flows. We are the original manufacturers of the custom super flow. We also can modify your Victory Vision mufflers into the "Atom Bomb".