What a trailer ramp spring information kit does

A trailer ramp spring information kit is a set of springs and hardware that reduces the physical effort needed to raise or lower a ramp on a utility, equipment, or cargo trailer. Instead of lifting the full weight of the ramp by hand, the springs carry most of that load, so you only need to guide it up or down. The springs are mounted between the ramp and the trailer frame, and they stay under tension whether the ramp is open or closed.

These kits are most common on enclosed trailers, car haulers, and equipment trailers where the ramp is heavy enough that manual operation becomes tiring or risky. A ramp that weighs 80 to 150 pounds becomes manageable when springs handle 60 to 80 percent of that weight. You still control the speed and direction — the springs just make the work safer and faster.

Key Takeaways

  • Spring information kits reduce the force needed to open or close a trailer ramp by having springs carry most of the ramp's weight.
  • The kit includes springs, brackets, hinges, and fasteners sized to match your specific ramp weight and trailer type.
  • Installation requires basic tools and usually takes two to four hours, but you need to measure your ramp correctly and understand how spring tension works.
  • Improper spring selection or installation can make the ramp too light to control safely or too heavy to operate, so matching the kit to your ramp weight is critical.
  • Springs lose tension over time and may need adjustment or replacement every few years depending on use.

How spring information systems actually work

The springs in these kits are usually torsion springs or gas struts, and they work by storing energy when compressed or twisted. When you lower the ramp, you're winding the spring tighter, and that stored energy pushes back when you try to raise it again. The springs are calibrated so that at the ramp's midpoint — roughly 45 degrees open — the spring force equals about half the ramp's weight. This makes the ramp feel nearly weightless in the middle of its swing.

At the fully closed position, the springs are relaxed and hold no load. At the fully open position, they're at maximum tension and want to snap the ramp shut. This is why you need to control the descent — you're not fighting the springs, but you're not letting them do all the work either. If the springs are too strong for your ramp weight, the ramp will slam shut on its own. If they're too weak, you'll still be doing most of the lifting.

The kit also includes new hinges and brackets because standard trailer hinges aren't designed to handle the sideways force that springs create. The brackets distribute that force across a wider area of the trailer frame so nothing bends or cracks under load.

Measuring your ramp to choose the right kit

Spring information kits are sold by ramp weight range, not by trailer size. A 6-by-12 enclosed trailer might have a 100-pound ramp, while another brand's 6-by-12 might be 140 pounds. You need to know your actual ramp weight before ordering, because installing springs rated for a 120-pound ramp on a 160-pound ramp will leave you doing too much work, and the wrong choice can damage the springs or the trailer frame.

To find your ramp weight, check the trailer's manual or spec sheet first — many manufacturers list it. If you don't have that, you can weigh the ramp directly by removing it from the hinges (usually four bolts), laying it flat on a bathroom scale or a truck scale, and recording the weight. Write this number down; you'll need it when you order the kit.

You also need to measure the distance from the hinge pin to the center of gravity of the ramp. Most kits come with a chart that shows which spring rate matches which ramp weight and hinge-to-center distance. If your ramp falls between two sizes on the chart, choose the heavier spring rate — it's better to have slightly more information than slightly less.

Installation steps and what can go wrong

Installation begins with removing the ramp from the trailer by unbolting the hinges. You'll then bolt the new spring-information hinges in place of the old ones, using the same bolt holes. The springs themselves attach to brackets that bolt to the trailer frame, usually on the inside of the trailer near the rear corners. Most kits include a template or detailed photos showing exactly where these brackets go.

The most common mistake is installing the springs backward or at the wrong angle. Springs are directional — they only work correctly when twisted or compressed in one direction. If you install them reversed, they'll fight you instead of help you. The second mistake is not tightening all fasteners fully. Springs create vibration and sideways stress, and loose bolts will rattle loose within weeks and can cause the ramp to drop unexpectedly.

After installation, test the ramp slowly by opening it about 6 inches and letting go. It should stay where you left it without drifting up or down. Open it halfway and test again. If it drifts down, the springs are too weak. If it snaps up on its own, they're too strong. Some kits include adjustment bolts that let you fine-tune the spring tension without removing the whole assembly, but if adjustment doesn't fix the problem, you may need a different spring rate.

Spring maintenance and when to replace them

Springs lose their tension gradually over time. After a year or two of regular use, you might notice the ramp feels slightly heavier than it did when new. This is normal and doesn't mean the kit has failed — it means the springs have relaxed a little. Many owners re-tension their springs annually by adjusting the bolts that hold the spring brackets, a job that takes 15 to 30 minutes with a wrench.

Springs that have lost too much tension to adjust can be replaced without removing the entire kit. You unbolt the old spring, bolt in the new one at the same angle, and test the ramp. Replacement springs cost between $30 and $80 per spring depending on the type and rate. Most trailers use two springs (one on each side), so a full replacement runs $60 to $160 plus your time.

Signs that springs need attention include a ramp that feels heavier than it used to, visible rust or pitting on the spring surface, or a ramp that drifts down slowly when held at an angle. Don't ignore these signs — a spring that fails completely can let the ramp drop suddenly, which is a safety hazard and can damage cargo or the trailer frame.

Comparing spring information to other ramp options

Not every trailer needs a spring information kit. Smaller trailers with lightweight ramps (under 60 pounds) often work fine with manual operation. Larger trailers sometimes use hydraulic or electric ramps instead, which cost more upfront but require no physical effort and are faster. Some owners use a combination — a spring information kit for everyday use and a hand winch as a backup if the springs fail.

Spring information kits are the middle ground: they cost $200 to $500 installed, they work without electricity or hydraulic fluid, and they're straightforward enough that most owners can maintain them. They're also the only option if your trailer doesn't have a power source or if you want to avoid the complexity of hydraulic systems. The trade-off is that you still need to be present and alert when opening or closing the ramp — you can't walk away and let it operate on its own.

Frequently Asked Questions

Can I install a spring information kit on a ramp that's already on my trailer?

Yes. You remove the old hinges by unbolting them, bolt the new spring-information hinges in their place, and attach the spring brackets to the trailer frame. You don't need to remove the ramp itself unless the hinges are welded on, which is rare on utility trailers. If your hinges are welded, you'll need to cut them off and have new mounting points welded, which requires a shop.

What happens if I choose springs that are too strong for my ramp?

The ramp will feel too light and will want to snap shut on its own. You'll have to fight it to lower it slowly, and you risk pinching fingers or getting hit by the ramp if it moves faster than you expect. You can sometimes reduce spring tension by adjusting the bracket bolts, but if that doesn't work, you need weaker springs. Oversized springs also wear out faster because they're always working harder than necessary.

Do spring information kits work in cold weather?

Yes, but springs become stiffer in very cold temperatures, so the ramp may feel slightly heavier. This effect is temporary and goes away as the springs warm up. Gas struts are more sensitive to temperature than metal springs, so if you live somewhere with harsh winters, a torsion spring kit may be more reliable.

How long does a spring information kit last?

With regular maintenance and adjustment, most kits last five to ten years. Springs lose tension gradually, so you'll notice the change over time rather than experiencing a sudden failure. Brackets and hinges can last longer if they're kept clean and dry. Salt and moisture speed up rust, which weakens the metal, so rinsing your trailer after exposure to salt water or road salt extends the life of the whole system.

Can I remove the kit later if I change my mind?

Yes. You unbolt the spring brackets from the trailer frame and unbolt the spring-information hinges, then bolt your original hinges back in place. The bolt holes in the frame will have small marks, but they won't affect the trailer's function. If you want to hide the old holes, you can cover them with small caps or washers, but this is optional.