RPM Series Mufflers

RPM Series Mufflers

These Edelbrock mufflers represent a revolutionary change in exhaust technology. The internal Tru-Flo® core utilizes equal-length runners made from 409 perforated stainless steel.  A special high-temperature, ceramic material is packed between the outer case and the inner core. Exhaust passes through the core with minimal turbulence, unlike mufflers with baffles. The ceramic packing withstands temperatures of over 1800° F. The result is a muffler which runs quieter, is less restrictive and produces more power than other designs. All RPM Series mufflers have a limited lifetime warranty, are stock replacement parts and 50-state Street legal. Testing verified that these mufflers ran quieter and produced more power than the competition. Our 3" center in/center out on a 1966 Shelby Mustang produced only 91 db. A competitor’s muffler on the same car measured 94 db. In dyno tests on a B/B Chevy, #5526 cranked out 14 ft/lbs. more torque at 5000 rpm than competitor’s 3" single offset muffler.