The best dampers on the market are manufactured in the U.S.A. by Horschel Motorsports, an ISO 9001:2008 certified facility. Horschel Motorsports is continuing the tradition that started in 1946, when the first viscous damper was invented. Over 4 million viscous dampers have been made for heavy duty diesel, drag car, stock car, street machine, race boat and other high performance engines. Looking into the future, Horschel Motorsports promises to manufacture the best dampers available as well as engineering new solutions for developing engine technologies.