Semi-Truck Lift Axles | Durable & Reliable Lift Axle Parts

Semi-truck lift axles are all about giving you that extra support for handling heavy loads with ease. You can smoothly raise or lower these auxiliary axles using switches in your cab, saving on tire wear and fuel when they're not needed. We offer both steerable and non-steerable options'whether you're looking for better maneuverability in tight turns or rock-solid stability for big loads, we've got you covered. Lift axles provide a practical upgrade for your truck, helping with weight distribution and overall support. Explore the variety available at 4 State Trucks and find the perfect fit for your needs!

Semi-Truck Lift Axles Access

Looking to boost your truck’s hauling power without overloading your main axles? That’s where lift axles come in.

Upgrade Your Loading Capacity

Whether you’re running a pusher axle, drop axle, or a steerable lift axle, adding the right components helps distribute weight more evenly and keep you DOT-compliant—all while improving ride quality and reducing wear on your truck. At 4 State Trucks, we carry the aftermarket lift axle parts and accessories that help you get the job done right.

Why Upgrade Your Lift Axle Setup?

- Handle heavier loads safely and legally by adding support where it counts. - Improve fuel economy by raising the axle when it’s not needed—less rolling resistance, more savings. - Extend tire and suspension life by lifting during light loads or deadhead runs. - Better control and stability with steerable lift axles that improve turning radius and tracking.

Built for Hard Work

Our lineup includes axle connection service repair kits, pivot alignment kits, end beam bushings, fender bracket kits for drum brakes, and more. Whether you're upgrading your suspension or fixing worn pivot components, we’ve got the heavy-duty solutions built to hold up under pressure. From 8,000 lb. to 20,000 lb. capacity ranges, our lift axle components are trusted by owner-operators, fleet managers, and upfitters across the industry.

Shop Online With Confidence

We only stock commercial-grade parts built for the demands of the road. Whether you're ordering online or stocking up at the shop, 4 State Trucks has the parts, tools, and knowledge to support your lift axle system from the frame brackets to the fender hardware. Throw in some related products to help keep your axle height consistent, like air springs and level valves, plumb your new lift axle more quickly with with fresh bulkhead tees, air lines and hose fittings, or conveniently add in a new replacement air valve dryer while you're upgrading your lift-axle kit.

Ready to Upgrade Your Lift Axle Game?

Browse our full selection of semi truck lift axle kits and accessories to customize your ride for power, performance, and compliance—mile after mile.