DynoMax Exhaust

DynoMax Muffler Ultra Flo Stainless Steel For 1991-99 Jeep Wrangler YJ & TJ 4.0L 6 cylinder engine Ultra Flow performance muffler Manufactured from all stainless steel materials Limited lifetime warranty Fits 4.0 liter 6 cylinder. The Ultra Flo Muffler by Dyno Max may very well be the best performance muffler on the market. It utilizes a straight-through design to maximize flow and power with a continuous perforated tube design. Manufactured from all stainless steel materials for... Read More Learn More

The new Evolution Competition System exhaust for the Wrangler consists of a polished stainless steel ultra flow muffler with 2.5 inch mandrel bent tubing. Learn More

Increase the performance of your Dynomax muffler with a Dynomax Tailpipe featuring mandrel bends for better flow over stock tailpipes. Learn More