close up of man working on trailer leaf spring suspension.

Trailer Suspension Parts & Upgrades

When your trailer starts bouncing or sagging, the right suspension setup brings back a smooth, controlled ride. It’s for anyone who wants safer handling, better balance, and fewer surprises on the road. Whether you’re hauling heavy loads or keeping things steady on rough pavement, choosing the right springs, hangers, or axle system helps your trailer track straight and tow with confidence mile after mile.

Suspension Solutions by Trailer Type

Build & Repair: Trailer Leaf Spring Parts

Universal Group 4 leaf double eye spring.

LEAF SPRING REPLACEMENT SYSTEM

Suspension Upgrades for a Smoother Ride

Road Armor shock absorbing equalizer kit.

EQUALIZER UPGRADE KIT

Dexter trailer springs over-under conversion kit.

ALIGNMENT AND LIFT KITS

Lippert Bolt-On Shock Kit w/ Heavy Duty Gas Shocks.

LEAF SPRING ENHANCEMENT SYSTEMS

Suspension Hardware & Replacement Parts

Axles & Suspension Systems

AXLE BEAMS

Timbren Axle-Less trailer suspension system.

AXLE REPLACEMENT SYSTEM

Get Your Trailer Suspension Right: Guides & FAQs

5 Tell-Tale It's Time to Replace Your Leaf Springs article.

How to Accurately Measure Trailer Leaf Springs articles.

How to Replace Your Trailer Leaf Springs article.

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TRAILER SUSPENSION QUESTIONS & ANSWERS

For more than 75 years, etrailer has helped trailer owners keep their rigs safe, reliable, and ready for the road. We test the suspension parts we sell, take thousands of install photos, and back every recommendation with real-world experience. Whether you’re tuning up a utility trailer or upgrading to an axle-less setup for off-road towing, you’ll find parts that fit and the know-how to help you get the job done right.

How can I make my trailer handle better?

Upgrading your suspension can make a huge difference. Axle-less systems are awesome if you want a smoother ride and better stability. You can also add heavy-duty equalizers or shock absorbers to help absorb bumps and reduce bounce—it’s great if you’re hauling something fragile.

How do I figure out which leaf springs I need?

It’s all about measurements. For double-eye springs, measure from the center of one eye to the other. For slipper springs, measure from the eye to the open end of the spring. Also, make sure to match the springs to your axle’s weight capacity. If you’re not sure where to start, check out our FAQ.

What’s the difference between leaf springs and torsion axles?

Leaf springs are more common and use a series of metal strips to absorb shocks, making them great for heavy-duty trailers. Torsion axles, on the other hand, use rubber cords inside the axle for shock absorption, giving you a smoother, quieter ride. They’re lower maintenance but usually cost a bit more.

Can I upgrade my trailer to carry more weight?

Absolutely! You can upgrade to heavy-duty leaf springs, stronger U-bolt kits, or even consider adding helper springs or shock absorbers. These upgrades distribute weight better and reduce stress on your trailer.

Can I have my trailer suspension professionally installed?

Yes—especially if you’re upgrading to axle-less systems, replacing leaf springs, or working with heavy-duty suspension kits. These installations often require lifting your trailer, aligning parts precisely, and safely handling load-bearing components. If you're unsure or just want a pro to take care of it, use our Local Installer Locator Tool to find a trusted expert near you. They'll make sure your trailer is set up right for a smoother, safer ride.

How do I know if my trailer’s suspension needs repairs?

Look for signs like sagging springs, uneven tire wear, or noises like creaking and clanking while towing. If your trailer bounces more than usual or feels unstable, it’s a good idea to inspect the suspension components.

For more details on what to look for, check out our article: 5 Tell-Tale Signs It’s Time to Replace Your Trailer Leaf Springs. It’s a helpful guide to spotting the warning signs before they turn into bigger problems!

Is it worth switching to an axle-less system?

If you’re looking for a smoother ride and better ground clearance, axle-less systems are definitely worth considering. They’re great for off-road or custom trailers and eliminate the need for a traditional axle, giving you more flexibility with your trailer design.