Trailer suspension parts

Tow-max supplies a wide range of high quality, durable trailer suspension parts.

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Trailer leaf springs are an important component of the suspension system, yet they are often overlooked until something goes wrong. They serve as the suspension system’s shock absorbers. When you strike bumps and uneven areas on the road, they bend to provide you a smooth ride. We also offer replacement components for the trailer leaf spring and trailer suspension parts.

Tow-max stock trailer suspension parts for all types of trailers, including boat trailer, utility trailer, dump trailer, horse float, catering trailer, snowmobile trailers, camper trailer, and more.

Our raw materials are sourced from China’s most reputable manufacturers.  Tow-max trailer suspension parts offer consistent performance with high quality and durability.

US Type Double Eye Springs

• Better weight distribution.
• Reduces wear and tear on trailer.
• Ensures level ride on bumpy and uneven surfaces.

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US Type Slipper Springs

• Multiple leaves that absorb road shock for smooth, quiet rides.
• Slipper end slides into hanger or equalizer.
• All springs are made with 60Si2Mn heat treated steel.

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Aus Type Double Eye Springs

• Ensures level ride on bumpy and uneven surfaces.
• Typically offer a smoother ride.
• All springs are made with 60Si2Mn heat treated steel.

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Aus Type Slipper Springs

• Have an eye on the front of the spring and an arched open end on the rear.
• Slipper end slides into hanger or equalizer.
• All springs are made with 60Si2Mn heat treated steel.

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Tandem Rocker Roller Spring Set

• Rocker Roller Assembly with all fittings.
• Economy option for setting up a tandem wheeled trailer.
• Shot peened hardened springs.

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Axle U-Bolt Kits

• Attaches leaf springs to trailer axle.
• Zinc plated or hot dip galvanized for corrosion reistance.

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Spring Hanger Kits

• Allows of hanging of leaf springs.
• All-steel construction for superior strength and durability.
• All raw steel hardware, which can be painted or coated after installation.

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Off Road Rebound Springs

• It has a large load capacity and able to make off road action.
• A small ‘rebound’ spring at either end of the spring
• Perform as actual rebound characteristics.

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TOW-MAX Is A Reliable True Partner

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One Stop Sourcing
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Large Stock
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Fast Delivery
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Free Warehousing
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Customer Inventory Management
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Supply Chain Management

4 Factors You Need to Consider When Purchasing Trailer Supension Parts

The spring type

It's crucial to figure out what kind of trailer leaf spring you'll need. Double eye leaf springs and slipper springs are the two major types. Depending on the size and ATM of the trailer you're towing, the driving conditions you're in, and the weight of the items you're hauling, choose the appropriate type.

Load / Capacity

Checking the weight rating of the axle on your trailer is an excellent approach to estimate the load capability of your leaf springs. The weight rating of an axle is generally indicated by a sticker or plate on the axle.

Width of the Spring

For boat, motorbike, horse, camping, flatbed, and utility trailers, the majority of trailer springs are 1-3/4 inches wide. Simply measure along the middle of the top leaf to calculate the width.

Main Leaf Length

Select the main leaf length according to trailer load rate and trailer frame.

Usage & Maintenance of Trailer Suspension parts

Don’t overloaded

Don’t overloaded

One of the most important elements of a trailer is the suspension. Don't overweight your trailer; it will damage the shape of the leaf springs. It might even be cracks. Then it has an impact on your safety, performance and insurance.

Do regular inspection

Do regular inspection

Check for the leaf spring on a regular basis. You should pay careful attention to the form of the leaf springs. Leaf springs that are cracked, corroded, leaning, sagging, or highly rusty can create serious problems. Throughout the season, keep a careful eye on these.
Horse bolts and center bolts should be tightened as part of the regular maintenance routine to avoid damage from the steel plate spring bolt loosening.

Use Rust Inhibitors and Repaint 

Use Rust Inhibitors and Repaint 

Steel plate springs can be brought back to life by using a rust inhibitor. To prevent corrosion, apply rust inhibitor to your trailer's steel plate springs. All oil and impurities must be cleaned with a solvent before painting a trailer and its steel plate springs (this will be more difficult if you oil your springs), and any loose rust should be removed with a wire brush. The steel plate springs should be removed from the trailer to be properly repainted. Repainting steel plate springs is dependent on how often they are used and how much water they come into touch with, but every 2-3 years should enough.



Lubricates the whole leaf spring of the trailer. The leaf springs rise higher when the car passes over a hump, bump, or pothole, taking the strain for the entire vehicle. Every element that sustains the impact will creak and squeak if it is not lubricated. Abrasive material absorption affects the vehicle's overall suspension, resulting in a highly unpleasant ride.
This may be avoided by lubricating the leaf springs. It may be necessary to disassemble the entire unit in order to complete the task, but if the end result is a smoother ride, the effort is worthwhile.

Trailer Suspension FAQs

How to inspect your trailer’s leaf springs for wear and defects?

• Examine for breakage and cracks:
Trailer spring cracks can harm the axle and tire and the suspension system, and the trailer as a whole. Look for any evidence of breaking or cracks in these locations.
• Investigate the corrosion signs:
The leaf springs are one of the metallic components of the trailer’s suspension system. They can be rusted if they are exposed to chemicals, corrosives, and weather elements.
• Check gaps between leaves:
The gaps between the leaves are a warning indicator. Gaps are generally a symptom of worn springs caused by aging or weight gain.

How do you keep trailer leaf springs from rusting?

To prevent corrosion, spray rust inhibitors on your trailer’s leaf springs. All oils and impurities must be cleaned with solvent before painting a trailer and its leaf springs, and any loose rust must be scraped with a wire brush.
Rust inhibitors’ endurance and adaptability are two of their finest qualities. Expert’s advocate using it to coat coil springs and leaf springs to prevent corrosion because of its durability and flexibility.

How long do trailer leaf springs last?

In your specific circumstance, it’s difficult to say how long your leaf springs will last. A set of leaf springs may last up to 200,000 miles on average. Usually, a regular trailer leaf springs last two or three years, depending on usages. This figure varies greatly from instance to situation — Keep an eye out for signs of wear and tear using your eyes and hearing. Rather than carefully adhering to a maintenance plan, keep an eye out for visual indicators that leaf springs need to be repaired.

How often should you replace trailer leaf springs?

If a leaf spring is highly rusted, has fractures or breaks in the leaves, or is drooping, it should be replaced. Matching axle capacity, the number of springs, and leaves size are the keys to finding the right replacement leaf springs. Leaf springs for a typical trailer will last around 200,000 miles on average.

How do trailer leaf springs work?

A leaf spring is a basic type of spring that is often used in wheeled vehicles for suspension. It is firmly fastened to the axle to allow the leaf spring to operate independently on each wheel. The ends of the spring are bolted to the wheel suspension. A leaf spring’s main function is to give support to a trailer. It also provides a smoother ride by absorbing any road shocks or potholes. Leaf springs are also used to locate the axle, regulate the vehicle’s ride height, and maintain the tires straight on the road.

Double Eye vs. Slipper Springs, which is better?

Both leaf springs have some advantages and disadvantages. Double-eye spring suspensions are smoother and quieter than slipper springs. It has better weight distribution and cheaper in terms of price. But it also has some drawbacks like more moving parts and more bushings to wear. The small bushing diameter offers a shorter lifespan and limited weight capacity like max 3000lbs.
On the other hand, slipper spring suspension has fewer moving parts and fewer bushings to wear. It has high quality and larger bushing in the eyes. It has a high loading capacity of up to 7,500 lbs. But this spring is noisier, and weight distribution not as effective between axles.

How to clean a leaf spring?

The typical leaf spring is made up of multiple thin strips of spring steel clamped together to form varied lengths. Dirt particles will accumulate between the individual leaves, causing wear and corrosion. Keeping the springs clean and in good working order will help the car last longer. If the spring is just covered in dried dirt or rust, scrub it clean using a wire brush. Brush the sides of the spring, the bottom and upper surfaces, and any clips that may be used to keep the leaves together aggressively. After that, use a cloth to wipe it clean.

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