If you're noticing a weird clunk or your car feels a bit "lazy" when you turn the wheel, it might be time to look at your evo x control arm bushings. Most owners overlook these little rubber bits until the handling starts to feel more like a boat than a rally-bred machine. The Evolution X is a fantastic platform, but let's be honest—it's a heavy car. That weight, combined with the way most of us drive these things, puts a massive amount of stress on the front and rear suspension components.
The factory rubber is designed to keep things quiet and comfortable for the average person commuting to work. But for those of us who actually want to feel the road, those soft bushings are often the first thing that needs to go. Over time, that rubber cracks, compresses, and loses its shape, leading to all sorts of handling headaches that can ruin a perfectly good Sunday drive.
Why the OEM rubber eventually gives up the ghost
Mitsubishi used high-quality rubber for the Evo X, but rubber has a natural enemy: time. Actually, it has several—heat, road salt, oil leaks, and sheer physical force. When you're diving into a corner, the control arm is trying to move in ways the engineers intended, but the bushing is supposed to keep it centered. As the evo x control arm bushings age, they soften up too much.
This leads to what we call "bushing deflection." Basically, the arm moves where it shouldn't because the rubber is squishing too much. You might not feel it when you're just cruising at 40 mph, but the second you load up the suspension in a sharp turn, that deflection causes your alignment to change mid-corner. It's annoying, it's unpredictable, and it makes the car feel disconnected.
Spotting the signs of worn-out bushings
You don't always need to crawl under the car with a flashlight to know your bushings are shot, though it certainly helps. Usually, the car will start talking to you first. One of the most common signs is a "clunking" or "popping" sound when you're going over speed bumps or turning into a driveway. This is often the metal inner sleeve of the bushing hitting the outer housing because the rubber has disintegrated.
Another telltale sign is steering wander. If you're driving straight on the highway and the car feels like it's darting left or right on its own—especially when you hit a small dip—your front evo x control arm bushings are likely the culprit. You might also notice weird tire wear on the inside or outside edges. Since the bushing can't hold the arm in place, your camber and toe settings go out the window, and your expensive tires pay the price.
The dreaded "thud" under braking
If you hit the brakes and feel a physical jerk in the steering wheel or hear a heavy "thud" from the front end, that's a classic sign of a failed rear-front control arm bushing (the big one). That specific bushing takes a ton of load during braking. When it's soft or torn, the entire control arm shifts backward, momentarily changing your wheelbase and toe. It's not just a performance issue; it's a safety one, too.
Picking the right replacement: Rubber vs. Polyurethane
When it's time to swap them out, you've got a few choices. You could go back to OEM rubber, but if you're already doing the work, why not make it better? Most enthusiasts lean toward polyurethane (often just called "poly"). Brands like Whiteline or SuperPro are huge in the Evo community for a reason.
Polyurethane is much stiffer than rubber. It doesn't compress nearly as much, which means your suspension geometry stays exactly where it's supposed to be, even under heavy load. The downside? It can be a bit noisier. If they aren't greased properly during installation, they might squeak like a haunted house. Also, because they're stiffer, you might feel a bit more vibration from the road through the steering wheel. For most of us, that "road feel" is actually a plus, but it's something to keep in mind if your Evo is a dedicated family hauler.
What about spherical bearings?
If you're building a dedicated track car, you might look at spherical bearings. These replace the rubber or poly with a metal-on-metal joint (usually with a liner). They offer zero deflection. Your handling will be razor-sharp, but your ride quality will take a massive hit. You'll hear every pebble you drive over. For a street car, it's usually overkill and can be a bit harsh for daily driving.
The installation struggle: Is it a DIY job?
I'll be straight with you: changing evo x control arm bushings isn't exactly a "quick afternoon project" for someone with basic hand tools. The biggest hurdle is that these bushings are pressed into the control arms. You can't just pop them out with a screwdriver. You're going to need a hydraulic press—or a friend who owns one.
The process involves removing the entire control arm from the car, which isn't too bad, but once it's on the bench, the real fun begins. Sometimes you have to get creative with heat (like a blowtorch) to break the bond of the old rubber, or even carefully cut the outer metal shell of the old bushing to get it to budge.
If you're doing it yourself, make sure you have a good set of sockets, a massive breaker bar for those subframe bolts, and plenty of grease for the new bushings. If you're not comfortable with a press, many people just take their removed arms to a local machine shop. They'll usually press the old ones out and the new ones in for a small fee, saving you a massive amount of frustration.
Handling benefits: What to expect afterward
Once you've got those fresh evo x control arm bushings installed and you've had the car re-aligned (don't skip the alignment!), the difference is usually night and day. The steering will feel "heavier" in a good way—more purposeful and direct. When you turn the wheel, the car reacts instantly instead of having that tiny delay while the rubber compresses.
You'll also notice more stability under heavy braking. The car won't "nose-dive" or dart around as much, which gives you a lot more confidence when you're driving spiritedly. It basically restores that "on rails" feeling that the Evo X was famous for when it first rolled off the showroom floor.
Don't forget the "Anti-Lift" kits
While you're looking at bushings, you'll probably see "Anti-Lift Kits" (ALK) mentioned. These are basically upgraded evo x control arm bushings that change the geometry of the front control arm slightly. By changing the position of the rear mount of the front arm, it reduces the tendency of the front end to lift under acceleration. This keeps the front tires planted, which is a huge help for a car that likes to power out of corners like the Evo. If you're going through the trouble of pressing out bushings anyway, an anti-lift kit is one of the best "while you're in there" upgrades you can do.
Wrapping it up
At the end of the day, your evo x control arm bushings are the unsung heroes of your suspension. They don't look like much, but they have a massive impact on how your car behaves. Whether you're just trying to get rid of a persistent clunk or you want to shave seconds off your lap time, refreshing these worn-out components is one of the most rewarding maintenance tasks you can tackle.
The Evo X is getting older, and those factory rubber bits aren't getting any younger. If you've got more than 60,000 or 70,000 miles on the clock, do yourself a favor and take a close look at them. Your steering wheel—and your tires—will definitely thank you for it. It's one of those jobs that's a bit of a pain to finish, but the first time you hit a twisty backroad with the new setup, you'll know it was worth every bit of effort.