The Eibach 3882.312 is a rear-only anti-roll bar from the ANTI-ROLL-KIT performance sway bar line. It is a 32 mm hollow, tubular bar with no adjustment, and it links the left and right rear suspension to keep the body flatter in corners. It suits owners of GM full-size SUVs and trucks who want a rear-focused handling upgrade without replacing the front bar too.
Factory rear bars on these heavy body-on-frame platforms are often the first thing to limit body roll. The manufacturer's kit literature says its bars are stiffer than stock, which is how they reduce roll and improve grip. Owners on user forums say a call with Eibach put the rear bar at roughly 14% stiffer than stock, with a recommendation to pair it with the front bar. Owners who fitted only the rear bar describe a clear change in how the truck settles and corners. Compared with cheaper universal bars, the case for this part rests on the application-specific fit and the mounting hardware included with the kit.
Fitment is the first thing to verify. Application lists for this part vary by seller and by model year, so confirm your exact year, body style, and drivetrain (2WD, 4WD, or AWD) with the manufacturer before ordering. Installation is a bolt-on job that most owners complete with a basic SAE socket and wrench set. The rear is the easier of the two ends, and raising the vehicle without compressing the rear suspension makes the stock bar easier to remove. Long-tail searches include Eibach 3882.312 rear sway bar, 32mm rear anti-roll bar GM SUV, Tahoe Yukon Escalade rear sway bar upgrade, and rear body roll reduction.
Per the manufacturer's stated design approach, the bar is stiffer than stock. Owners on user forums report that an Eibach representative described the rear bar as roughly 14% stiffer than stock and recommended using it together with the front bar.
Fitment lists for this part differ between sources and model years, so the manufacturer should confirm fitment for your exact year, body style, and drivetrain before you order.
Owners on user forums report reusing the stock rear end links during installation, though lowered setups sometimes use different end links. Check the bar's bushings and end links for wear during the install.
This is a bolt-on rear sway bar swap that most DIY owners can handle with a basic SAE socket set, wrenches, and an Allen set. Owners on user forums recommend raising the vehicle without compressing the rear suspension, since releasing tension on the stock bar makes the job quicker. Watch for clearance at the panhard bar bracket and the shock, which some lowered trucks have shown, so check the bar's position before final torquing. Confirm fitment before you begin.
