Press Release: SuperTrapp Internal Disc Series (MSRP starts at $789.00) provide a bolt-on performance gain of 10 – 15% more horsepower. A chrome body with Fishtail or Tapered Slash end caps is included with specific models. The core and packing are rebuildable. Internal Disc Series 2:1 Systems include eighteen, 3-inch discs. Internal Disc Series Silp-Ons and and 2:2 Crossover Systems include twenty-four 3-inch discs The Internal Disc Series 2:2 Staggered Duals System includes thirty-six, 3-inch discs SuperTrapp Internal Disc Series also fit Baggers and Dynas. SuperTrapp offers Universal Internal Disc Series Slip-Ons for unique applications.