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.
The box arrived all beat up. After installing exhaust I noticed there was a hole in the muffler. Not happy
from Sonora ca
4.0EZ Install and it fits
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.
from Temecula, CA
Had to have a muffler shop weld it on for me. Not too loud but there is a little resonance at certain rpms. Seems louder at idle and about like stock on the road.
Would probably just have had my rusted out muffler replaced in retrospect. But I got suckered into the rebate.
4.0Good deal, easy one person job
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.
By Heir Oscar
from Black Hill South Dakota
4.0Awesome product but needs better instruc
The product is awesome! It has a nice deep sound. Installed it on my 92 wrangler yj 2.5l. The only bad thing was that I had to buy a extra part to install the exhaust because I cut the old one to short.
4.0Quiet until you want it not to be
So far so Good, nice subtle sound until you shire down on it then it opens up. We will see how it holds up after a few creek crossings.
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