2009 JEEP WRANGLER JK  - Dynomax Stainless Steel Exhaust System - 39457 - 39457 | 4WD.com
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2009 JEEP WRANGLER JK  - Dynomax Stainless Steel Exhaust System - 39457 - 39457

Dynomax Stainless Steel Exhaust System - 39457

Dynomax Exhaust | Part Number: DYN39457


  • In_Stock: In Stock
  • Exit Location/Type: Dual Split Rear
  • Material: Stainless Steel
  • System Type: Cat-Back
  • Tip Included: Tip is included
  • Tubing Size: 2.5 Inches
  • Fitment: Direct Fit
  • In_Stock: In Stock


  • 07-11 Wrangler JK, 4-Door
  • 3.8L 6 cylinder engine
  • Stainless steel
  • Dual exit


Technology Dominates every phase of Dynomax Exhaust System production. From State-of-the-art CAD design and engineering to advanced CAM processes, no one else in the after market industry delivers Dynomaxs level of high-performance technology.


This is the one!!

I went through a GIbson dual exhaust and a Ruged Ridge dual. Gibson was toooo loud inside with hardtop on and broke off at the hanger after 7 months of mild highway driving. The Ruged Ridge was softer but also broke at the weld and eventually fell off after 5 months. The Dynomax was much harder to install a lift and a garage is Recommended but it sounds great and power is also there. This one seems much Stronger.

from NY |

Question & Answers

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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