New Thrush® Exhaust Rattler Series Mufflers is ‘Loud & Proud’ Bringing to life the statement “This Bird is Loud and Proud,” the new Thrush Rattler muffler series brings a very aggressive sound to the Thrush Exhaust brand. Available now at performance retailers across the U.S. and Canada, the Thrush Rattler muffler is a 100-percent welded