Khrome Werks 4.50in. HP-Plus Slip-On Muffler - Smoked Chrome with Black Edge Billet End Caps 202655Engineered for performance, style and sound Produce the Khrome Werks signature, authoritative tone without annoying high frequency noises 4. 50in. 16 gauge muffler body Absorptive baffle covered with stainless steel mat and high temp fiberglass Improved torque and horsepower from the hit of the throttle Billet aluminum tips can be rotated 360deg at 90deg increments; feature a high temp powdercoated finish Tips also available separately; fit all 4.