Dynomax 39446 Exhaust System Kit

Dynomax Ultra Flo Welded Cat-Back System

The Dynomax Ultra Flo Welded Single System, part number 39446, is a cat-back exhaust kit built for the 2007-2011 Jeep Wrangler. It uses stainless steel piping and a straight-through muffler layout to support freer exhaust flow while maintaining a deep performance tone.

For Jeep Wrangler owners looking for a direct exhaust upgrade, this system combines mandrel-bent tubing, a rear exit layout, and a round polished tip for a clean finished appearance. The 39446 exhaust system is engineered for the 2007-2011 Jeep Wrangler and follows an OE-style fitment path.

Key Features

• Cat-back exhaust system for the 2007-2011 Jeep Wrangler
• Dynomax Ultra Flo Welded straight-through muffler design
• Stainless steel pipe and muffler construction
• Mandrel-bent tubing for consistent exhaust flow
• Rear exit, single exhaust layout with round tip
• Band clamp connection style
• Includes intermediate pipes, muffler, tail pipe, tip, and clamps
• Part number 39446

Product Details

Dynomax Ultra Flo Welded is the performance exhaust line focused on welded stainless steel construction and a straight-through muffler core. In this application, part number 39446 is built as a single cat-back system for the Jeep Wrangler, using a 2.5-inch pipe diameter and a 3.0-inch outlet and tip diameter. The design is intended to replace the exhaust section behind the catalytic converter and deliver a more open exhaust path with a performance-oriented sound profile.

This system is listed for Fits 2007-2011 Jeep Wrangler, N/A. It is a direct fit for Jeep Wrangler owners searching for a 2007-2011 Jeep Wrangler cat-back exhaust system, a stainless steel exhaust upgrade for Jeep Wrangler, or Dynomax 39446 replacement exhaust components.

Common Issues This System Can Address

• Restricted exhaust flow from a factory-style exhaust system
• Worn or corroded exhaust piping and muffler sections
• Loss of exhaust tone after factory system aging
• Need for a rear-exit single exhaust layout on a Jeep Wrangler
• Replacement of a damaged cat-back exhaust assembly

Installation Notes

This is a bolt-on cat-back system for the listed Jeep Wrangler applications. Verify vehicle year and exhaust configuration before installation, and confirm clearance around the rear exit path, hangers, and underbody components. Band clamps are used for assembly, so proper alignment and tightening sequence are important for sealing and fit.

Because this system is application-specific, confirm that your Jeep Wrangler matches the 2007-2011 fitment range before ordering. The part number 39446 is intended for the listed OE-design configuration with a single outlet.

Quality Assurance

Dynomax backs Ultra Flo Welded mufflers with a Limited Lifetime Warranty and a 90-Day Performance & Sound Guarantee. The welded stainless steel construction and straight-through muffler design are part of the Ultra Flo Welded product line’s focus on durability and consistent exhaust performance.