4-1/2" HP-Plus® Slip-On Mufflers - Smoked Chrome with Edge - Touring - 202655These mufflers have been dyno tested and show a 12% increase in torque and 7% increase in power. Produce the Khrome Werks signature, authoritative tone without annoying high frequency noises. Absorptive baffle covered with stainless steel mat and high temp fiberglass developed just for the Milwaukee Eight. 16 gauge muffler bodies. Made in the U. S. A.