DEP, an established name in Europe, has been making quality exhaust systems since 1974 and offers two- and four-stroke systems with a U.S. distributor to speed shipping. DEP four-stroke pipes are liked by all types of riders, while the two-stroke systems are targeted to power riders. New and improved for 2011, the S7 exhaust system is available for all major brands. Each S7 system is designed to dramatically improve performance and horsepower and meet all sound restrictions.