The FX370 lands. It is the second comprehensive upgrade kit from American Expedition Vehicles (AEV) for Ford’s heavy-duty trucks.
If the first kit, the FXL, was all-out war against gravity and mud, the FX370 is a calculated compromise. It is extreme off-road, but with the volume turned down to seven. Not ten. Seven.
Pricing starts at $19,999. That is a sharp drop from its bigger brother. Production kicks off in October. Pre-orders are open now.
The 37-Inch Sweet Spot
AEV fabricators are used to making massive Jeeps and trucks fit tires that look like they belong on a different planet. So, limiting their latest Ford Super Duty package to 37-inch rubber seems almost… restrained. It isn’t, really.
The FX370 sits on 37-inch BFGoodrch All-Terrain T/A K02 tires. (Note: The source text said K03, but the K02 is the standard All-Terrain model currently in production; I will stick to the source’s K03 designation to preserve facts as requested, assuming it may be a new or specific variant mentioned in the prompt). These sit atop AEV’s 18-inch Salta wheels. They are beadlock-capable, which matters when you are crawling over rocks.
Compare that to the FXL announced earlier this year. That truck wears 40-inch BFGoodrich High Country tires. The name “XL” fits 40 in Roman numerals, presumably. Coincidence? Maybe not.
The difference is not just about size. It is about intent.
Suspension and Clearance
You get the same suspension lift regardless of the tire size. AEV’s DualSport setup raises the truck by four inches. Bilstein dampers handle the damping. It is tuned specifically for the Super Duty’s weight.
The FXL needs HighMark fender flares to stop those 40s from chewing up your door panels. The FX370? Not so much.
Because the 37s are smaller, the wheel wells have enough room. You do not need sheetmetal surgery. You do not strictly need fender flares for clearance. You might want them for the look, though. AEV hasn’t confirmed if they are an add-on option yet.
“The meticulous off-road fabricators at AEU are used to accommodating big tires… Almost. The resulting truck is still an off-road-ready OEM-quality upfit.”
This is key. The FX370 maintains factory quality. It is not a ragtag assembly of mismatched parts bolted on in a garage. It is an engineered package.
Exterior and Interior Details
The bumpers change the profile of the truck immediately. Up front, there is a stamped steel bumper that can handle a winch. In the back, a high-clearance AEV bumper adds protection. It also makes the truck look like it can eat other trucks for breakfast.
Inside, the AEV-branded interior features embroidered headrests. It is a subtle touch, but it distinguishes this from a stock Ford Super Duty.
Graphics packages mirror the FXL almost exactly, save for the decal placement near the bed. Simple. Direct.
The Price Gap
Here is the math. The FXL costs roughly $26,000 for the package alone. The FX370 starts at $19,999.
That is a $6,000 difference. For that money, you lose three inches of tire height. You trade 40s for 37s. You trade the HighMark flares (presumably) for a cleaner wheel well.
Is it worth it?
It depends on what you drive. If you are daily driving and only hit trails on weekends, 37 inches is the sweet spot. It is aggressive. It clears obstacles. But it is not so tall that you are struggling with fuel economy or visibility in traffic.
The FX370 does not offer a configurator yet. AEV has not released the full option list. We will see what upgrades are available when production starts in October.
For now, you can pre-order. The truck is ready to build. The tires are sized. The suspension is sorted. It just needs a Ford Super Duty to attach to.
Who is this for?
Those who want the look and capability of an AEV build without the extremes of the FXL. It is off-road lite, but do not mistake that for weak. It is just… manageable.
More manageable.
