The Glass pack muffler has been around since the beginning of hot rodding. These Thrush Glass Pack Mufflers by Dynomax have a Heavy-gauge shell for maximum durability,Straight-through design for maximum flow and power and CRF (Continuous Roving Fiberglass) for powerful tone and long life.
For 30 years, DynoMax Performance Exhaust has specialized in engineering quality mufflers and exhaust performance systems for 4x4s. Pure, Unadulterated, Power is the company's theme and their extensive line of stainless steel performance mufflers reflects this. We carry everything from exhaust tips to tailpipes to mufflers made by DynoMax for off-roaders looking to increase horsepower and performance on and off the trail. In 2015, DynoMax introduced the QuietCrawler System for lifted Jeep Wrangler JKs designed for off-roading and rockcrawling. The company is dedicated to developing and producing exhaust system that push the boundaries of performance, innovation and efficiency. Shop Dynomax Exhaust Now