If you’ve already committed to a lift, upper control arms (UCAs) aren’t really optional. The stock UCAs on a lifted Tacoma leave your alignment geometry fighting against itself, and you end up paying for it in tire wear, steering wander, reduced travel, and a truck that never quite drives right. I went into my suspension build knowing UCAs were part of the plan, and when I decided on the Ironman 4×4 IM2.5 suspension kit, it made sense to stay in the same ecosystem and run the Ironman 4×4 Pro Forge UCAs alongside it.
I’ve had them on my 2019 Tacoma TRD Off-Road for over a year now, paired with the full IM2.5 setup and running 285/70/17 AT tires. Here’s how they’ve held up.
Table Of Contents
Why I Chose The Pro Forge UCAs
Honestly, the decision wasn’t complicated. I was building the truck with the Ironman IM2.5 kit and wanted to do it right from the start, rather than with a different brand of UCAs. Overall, I just wanted to experience the full kit that Ironman laid out altogether. I had heard good things about the Pro Forge arms from others who had run them, and the specs made sense for what I was doing.
The Pro Forge UCAs are built from 6082 T6 drop-forged aluminum, which gives them a better strength-to-weight ratio than tubular or cast alternatives. They come with four degrees of built-in caster correction, which is what actually fixes your geometry after a lift and gets the alignment back where it should be. They also use an OEM sealed ball joint (and bushings) and a hardened zinc coating that Ironman claims provides 75% more corrosion resistance than standard powder coat or paint. Those are the things that mattered to me: geometry correction, sealed joints that don’t need constant greasing, and something that would hold up long term.
It doesn’t hurt that they also come with a 4-year, unlimited mileage warranty. Ironman 4×4 is great about that stuff.
Install & Alignment
I had these installed at a shop alongside the full IM2.5 kit, so I can’t speak to DIY installation time, but based on everything I observed and heard from the shop, it was a straightforward swap that took roughly 30-45 minutes at the shop. The UCAs bolt directly in place of the OEM arms with no modifications needed.
The bigger thing, for me, was what happened at alignment. With previous UCAs I had run, I had a little more ability to tune my specs to my preference. With the Pro Forge arms, they weren’t quite as flexible, and the shop got me within factory spec rather than a custom tune. That’s worth knowing going in if you have specific alignment preferences. This isn’t a set of arms meant to replace highly adjustable UCAs. That said, the truck tracks perfectly fine, there are no pulling or wandering issues, and for the way I use my truck, it has been a non-issue. Which is probably what the vast majority of people can relate to.
On the highway after getting everything dialed in, the truck felt solid. I may have noticed a slight increase in steering feel, though with a full suspension swap happening at the same time, it was hard to isolate exactly what was doing what. Either way, nothing felt off. It just felt right.
Off-Road Performance
This is where UCAs actually prove their value, and the Pro Forge arms haven’t given me anything to complain about. I took the truck out to Colorado and put it through trails in the Ozarks here in Arkansas, and through it all, the arms have been completely silent and maintenance-free. No squeaks, no creaking, no grease intervals to stay on top of. That was one of my main priorities going in, and the sealed ball joint has delivered on that.
The geometry correction does its job. The truck steers predictably both on- and off-road, and I haven’t noticed any wandering, bump steer, or anything that would indicate alignment issues developing over time. After over a year of mixed road and trail use with a loaded truck, I can safely say they’ve been great.
Long Term Durability
Past the one-year mark, nothing has changed. The zinc coating has held up without any visible corrosion, which is notable given that my truck is used under real-world conditions and doesn’t spend its life in a garage. The ball joints are still tight and quiet. I haven’t had to touch them since install day, which is exactly the point.
Final Thoughts
If you’re running the Ironman suspension system, pairing the Pro Forge UCAs with it is the clean, sensible choice. They do what UCAs are supposed to do, they’ve held up through real use, and the sealed ball joints have been genuinely maintenance-free over the time I’ve run them. The one thing to be aware of is that if you want a fully custom alignment spec dialed in beyond factory range, you may encounter limitations compared to other UCA options that allow for more adjustment. It wasn’t a dealbreaker for my use case, but it’s worth knowing before you buy.
For a Tacoma running the IM2.5 kit with bigger tires, these are a straightforward, durable choice that have earned their spot on my build.
