Supertrapp Industries is one of the top five motorcycle exhaust manufacturers in the United States. A key factor contributing to its success is an innovative patented diffuser disc technology. This innovative system, developed in 1971 by the company founder, allows the rider to adjust his motorcycle to a specific riding environment. It sets SuperTrapp apart from all other exhaust manufacturers. Simply add or remove discs to increase or decrease the exhaust outlet, increase or decrease back pressure and increase or decrease exhaust tone. Depending upon the chosen self-adjustment, either top-end or low-end torque is improved.
Three-Inch Disc Installation
Every SuperTrapp exhaust system is accompanied by full, easily-understood installation instructions. The following simple steps will illustrate the disc installation. Based on what you wish to achieve with your exhaust system, stack the recommended amount of discs with the end cap. Align the three screw holes. The flat surface of the discs must be against the core--the outer lip must be angled away from the core. Insert the three screws through the end cap and stack of discs. Apply the high-temperature lubricant, supplied with your system, to the threaded end of each of the three screws. A T-handle hex key is supplied to insert the whole assembly into the muffler. Align all three screws with the threaded inserts in the core, as per the diagram. Tighten the screws evenly as per the diagram provided. Tightening should equal two full turns after the initial screw-head contact.
Four- and 5-Inch Disc Installation
To install the 4 and 5-inch disc exhaust system, stand the muffler on the bench with the outlet end right-side up. Place the recommended discs for your riding environment, and the end cap on the outlet of the muffler. The discs' flat surface must be against the core, outer lip angled away from the muffler. Align the six screw holes with the threaded inserts as per the diagram provided. Insert the screws through the end cap and discs and into the muffler outlet inserts as per the diagram. Tighten screws evenly in a cross pattern as per the instructions provided with the SuperTrapp exhaust. Four-inch discs need to be tightened to 15-15-in/lbs. and 5-inch discs should be tightened to 50-50-in-lbs. or two full turns after the screw head contact the end cap.
Selecting Exhaust Systems
True Duals feature full-length, 2-1/4-inch heat shields that keep the rider and passenger's legs cool while protecting the pipes. Kerker, SE Series or FatShot Slip-Ons may be added to these stylish dual (2:2) pipes.
The two-into-one (2:1) Low Roller is long and low with a flowing design that accentuates the bike's profile. This exhaust system includes a three-piece heatshield set and chromed billet end cap. End caps are customisable and your Low Roller exhaust system includes 17 choices.
Fat Duals offer a robust, yet sensible sound level in a heavyweight design. Incorporating staggered 1.75-inch primary head pipes and full-length, 2.5-inch heat shields, the Fat Duals are bold and beautiful. The shiny, chrome-laden cylindrical muffler bodies are enhanced by interchangeable end caps to customise a signature exhaust.
Mean Mothers are brand new for Harley-Davidson 2009 and 2010 touring models. Facilitating more horsepower due to lighter weight, the Mean Mothers are hot-rod-style slip-ons with a decided edge. Bursting with a loud crack, these intensely throaty drag pipes mean business. Black ceramic-coated billet end caps are included.
Designed by motorcycle Master Builder, Paul Yaffe, the Road Legends Phantom Pipe offers two-into-one (2:1) drag pipe is for Softails and customs. Available in brushed silver or black ceramic, the Road Legends Phantom includes four-piece chrome-plated heat shields that are pre-installed. Claw-end tips flare skyward in these intensely artistic pipes while 2-inch primary pipes and a 3.5-inch diameter collector provide optimal flow for a high-performance riding experience.
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