Dynomax 39456 Exhaust System Kit

Dynomax Ultra Flo Welded Cat-Back Exhaust

Dynomax Ultra Flo Welded part number 39456 is a stainless steel cat-back exhaust system built for the 2007-2011 Jeep Wrangler. It uses a straight-through muffler design and mandrel-bent tubing to support freer exhaust flow while maintaining a deep performance tone.

The Ultra Flo Welded Single System line focuses on welded stainless construction, reduced interior resonance, and a bolt-on layout for straightforward exhaust replacement on the Jeep Wrangler platform.

Key Features

• Fits 2007-2011 Jeep Wrangler, N/A
• Cat-back system with single exhaust layout
• Stainless steel pipe and muffler construction
• Straight-through Ultra Flo Welded muffler design
• Mandrel-bent tubing for consistent exhaust flow
• Round polished tip with rear exit style
• Band clamps and mounting hardware included
• Part number 39456

Product Details

Dynomax 39456 is engineered as a premium performance exhaust system for Jeep Wrangler owners who want a direct replacement from the catalytic converter back. The system includes intermediate pipes, muffler, tail pipe, tip, and clamps, with a 2.5-inch pipe diameter and a 3.0-inch outlet and tip diameter. The straight-through muffler uses Continuous Roving Fiberglass technology to help control cabin resonance while preserving a performance-oriented exhaust note.

For shoppers searching for a Jeep Wrangler cat-back exhaust, stainless steel exhaust upgrade, or Dynomax Ultra Flo Welded Single System for 2007-2011 Jeep Wrangler, this part number 39456 matches the confirmed application and system style.

Common Reasons to Replace

• Rust or corrosion in the factory exhaust system
• Cracked or leaking muffler or pipes
• Restricted exhaust flow from an aging system
• Unwanted exhaust resonance or drone
• Need for a performance cat-back exhaust upgrade

Installation Notes

This system is designed for bolt-on installation on the confirmed Jeep Wrangler applications. Verify vehicle year and exhaust routing before installation, and confirm clearance around the rear exit and tip location. Professional installation is recommended if the existing exhaust hardware is seized or heavily corroded.

Quality Assurance

Dynomax backs the Ultra Flo Welded line with a Limited Lifetime Warranty and a 90-Day Performance & Sound Guarantee. Part number 39456 is built with 100-percent welded stainless steel construction for long-term durability.