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 Dynomax's level of high-performance technology.
Very good shipping and very little delay due to todays conditions. Exhaust fit perfect and sounds very nice.
this exhaust fit great on my jeep. fit and finish was great
I installed this on a 93 Wrangler. It sounds great, and went on easy! The most difficult aspect of the job was removing the old componants. Thank you 4WD you guys are great!
great product. very complete kit and easy to install. great sound (not too loud).
The product was as advertised and a perfect fit. The install was easy. The muffler and exhaust piping seemed to be made of high quality steel. I would recommend this product.
1997 XJ Sport, 5.5 Rubicon Lift, 33 BFG A/T's: This system is obviously designed to fit a stock XJ as it should be. My Rubicon 5.5 lift has the longer rear spring shackles and I have a Skidrow gas tank skid plate which changes the space in that area. The ONLY issue I had during install was the rear hanger with the unit is a Ubolt clamp which didn't fit in the space due to my mods. Simple fix was to cut the clamp off the hanger and weld it to the pipe like stock. Other than that every thing lined up perfectly and doesn't rub or bang on springs or skid. A little better rumble over stock, a little better mileage, and a noticeable amount of horses in the seat of your pants. I'm pleased with the system overall.
The system when on really easy. One person can get the job done with no problems. I was hopping for a louder exhaust note, but it is not bad, better than stock, but not anyoing to the neighbors.
Q: Is welding required? Answer this question
A: No welding is required. This is a bolt-on kit.
Answered by Christian from 4WP HQ on 01/30/2023
Q: Is this a throaty performance sounding muffler or a quiet muffler ? Answer this question
A: Thank you for your inquiry. The Super Turbo Muffler has a Deep mellow tone at idle and cruise with a more aggressive note during acceleration.
Answered by DRiV Team on 10/05/2022
Q: Can I get this for an 8-foot bed extended cab Answer this question
A: Thank you for your inquiry. Dynomax would need to know your appilication and the Wheelbase of the truck you have to see if we offer a Cat-Back system like the Dynomax 17380 kit.
Answered by DRiV Team on 04/14/2022
Q: Is the extended cab exhaust persormance exaust the same as standard cab? Answer this question
A: No - the extended cab exhaust will be longer.
Answered by Kelly from 4WP Corporate Headquarters on 11/16/2020
Q: Does this system have an OE number or legal application in California for smog? Or would I need to take it off before getting my XJ smogged to pass the smog test? Answer this question
A: Thanks for the inquiry Blake, the Dynomax Exhaust Cat Back Exhaust System part # DYN17340 this is legal in California and you should not have problems getting the truck smogged.
Answered by RK on 09/21/2015
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
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