The MagnaFlow Street Series axle-back for the Jeep Wrangler JL 3.6L replaces the factory system from the rear axle rearward. It uses a 2.5" main piping diameter and a Dual Split Rear exit with polished tips. The manufacturer describes the system as bringing enhanced engine sound and dyno-proven performance and rates it at Moderate exterior sound and Mild interior sound. That balance is the reason to pay more than for a basic muffler-delete pipe: you get a deeper note that stays comfortable on the highway. Searches for this part typically include terms like 2018 JL 3.6L axle-back exhaust, polished dual tip JL exhaust, and Pentastar V6 exhaust upgrade.
Fitment is the main thing to verify before you order. The manufacturer lists the system for 2.0L and 3.6L Jeep Wrangler models, but its year coverage varies from page to page, so confirm your VIN against the manufacturer's fitment data. Owners on user forums stress that JK and JL exhaust are different, so this JL-specific kit will not work on a JK. Some owners also report that the inlet on certain early units was tight over the factory pipe, so check the fit before final tightening.
No. Owners on user forums note that JK and JL exhaust systems are different, and this kit is built for the JL platform.
The manufacturer lists the Street Series axle-back for both 2.0L and 3.6L Jeep Wrangler models. Because year coverage differs across the manufacturer's own pages, confirm your exact model year with the manufacturer before ordering.
Owners on user forums report that the pipe connecting to the factory exhaust can be too small on some units, and this is usually discovered only after the factory system is removed. On the manufacturer's side, a representative posted on a user forum that the inlet flange is sized to match the factory pipe. Details vary, so confirm the fit with the manufacturer before you start the install.
Owners on user forums describe this as a manageable driveway job with hand tools, with about 20 minutes to remove the stock one and install an axle-back reported by one owner. The time sink is usually the rubber hangers. One owner suggests removing the hanger brackets and stock muffler together, then moving the hanger bushings over to the new exhaust. A hanger removal tool and a light penetrating lubricant on the rubber hangers both help; one forum tip recommends spraying the rubber hangers with WD-40 so they slide off more easily. Support the vehicle securely, let the exhaust cool, and check the inlet fit before final tightening. If the new inlet does not slip over the factory pipe, forum reports describe tack welding the system to the Jeep pipe or flaring the end of the Magnaflow unit so it slides over before clamping. Those are shop-level fixes, so consider professional help if the fit is off.
