Having the right approach and departure angle can either make or break a 4×4 vehicle’s ability to perform well in tough terrain. Be sure to note the emphasis we placed on the “break” portion of that last sentence because that’s precisely why we are discussing Flowmaster’s line of Outlaw Extreme and Flowmaster FlowFX Extreme clearance exhaust systems today.
While a full-blown lift kit, upsized off-road rubber, and a slimmer steel bumper will definitely make a difference up front, the ass-end of the equation provides a very different set of challenges, with exhaust systems being one of the biggest concerns. Even if an obstacle does not sheer off a muffler, there is the risk of crimped exhaust pipes, snapped mandrel bends, disconnected flanges, unhinged hangers, and the ever-present threat of punctures.
In order to keep your 4×4 rig’s exhaust clear of the threats that lie in wait along the trail, Flowmaster has made both its Outlaw Extreme and the FlowFX Extreme Exhaust Systems as clearance oriented as possible, all without sacrificing performance perks.
“We wanted to do more for the hardcore off-road groups,” explains Mark Emerson of Flowmaster Exhaust Systems. “You would see on the forums that a lot of these guys were completely cutting parts off of the factory system to try to resolve this because it’s a common problem. So we thought, why not put together something that addresses this by-design?”
This eventually led to Flowmaster’s debut of the first Outlaw Extreme high clearance 3-inch exhaust way back in 2016. Flowmaster developed a streamlined system focusing exclusively on late model full-size pickups like the Ford F-150, Chevrolet Silverado, and Toyota Tundra. Needless to say, these exhaust systems were a huge hit for the manufacturer, giving just cause for Flowmaster to look into producing similar products for other vehicles.
2018-2021 Jeep Gladiator JT 3.6L – Flowmaster Outlaw Extreme – 817958
The concept followed the same design goals that Flowmaster targeted with their full-size applications. One of the top priorities was to get the exhaust system tucked up underneath the truck as much as possible.
“If we use a 2016-2021 Toyota Tacoma 3.5L as an example,” Emerson explains. “The factory pipe does tuck up a decent amount past the frame into the muffler, but the overall size of the factory muffler does cause it to hang down just before the axle. Because we are able to use smaller performance mufflers, we can tuck them up higher and out of the way more and keep them above the rear leaf springs for better clearance. And it is the same for the other applications that we offer these kits for.”
These ultra-flush exhausts are as straightforward of a swap as possible and mount using the factory exhaust hangers. By utilizing smaller mufflers, these units offer some weight savings perks too. The smaller packaging also allows additional elbow room for aftermarket suspension upgrades.
Packing a 3-inch, 16-gauge mandrel-bent stainless steel tubing structure, both styles provide increased levels of exhaust flow and power. The FlowFX Extreme variant is the quieter of the two. The reason for this is due to the Outlaw Extreme system’s race-derived muffler. Both the Outlaw and FlowFX systems bolt up to the factory catalytic converter and other emissions systems.
Vehicle Applications For Outlaw Extreme And FlowFX Exhaust Clearance Systems
Flowmaster has recently made both Outlaw Extreme and FlowFX systems an option for owners of the following vehicles:
- 2010-2022 Toyota 4Runner 4.0L
- 2005-2015 Toyota Tacoma 4.0L
- 2016-2021 Toyota Tacoma 3.5L
- 2010-2022 Toyota 4Runner 4.0L
- 2020-2021 GM Silverado/Sierra 2500HD/3500HD 6.6L Gas V8
- 2007-2018 Jeep Wrangler JK 3.6L & 3.8L
- 2018-2021 Jeep Wrangler JL 2.0L & 3.6L
- 2020-2021 Jeep Gladiator 3.6L
- 2019-2021 RAM 1500 5.7L
- 2009-2021 (19-21 Classic) RAM 1500 5.7L
The 2009-2020 Ford F-150, 2009-2021 Toyota Tundra, and the 2009-2019 GM 1500 pickups remain steadfast staples for these original exhaust systems. There are a plethora of other Outlaw Extreme and FlowFX systems currently in the works over at Flowmaster. “There’s definitely more coming,” Emerson elaborates. “These systems have been really successful for us. We definitely want to continue to expand the number of platforms that we can support.”