Top 7 Side Dump Trailer Manufacturers

Have you ever called a manufacturer after a problem and gotten no answer?

That happened to me with a side dump trailer. The hydraulic system failed mid-job. We tried calling. No one picked up. No follow-ups. Just days of downtime and a crew stuck waiting.

After that, I stopped choosing based on price alone. I started paying attention to things like after-sales service, part availability, and real customer feedback.

And that’s what this article is about.

If you’re trying to find a dependable side dump trailer—one that works hard and doesn’t leave you hanging you’re in the right place.

This guide covers 7 side dump trailer manufacturers that are worth your time. I’ll help you weigh quality, cost, reliability, and support—so you can choose a trailer that won’t let you down when it matters most.

By the end, you’ll know exactly what to look for and how to compare your options with confidence.

So let’s dive in!

1. Quick Comparison Chart

Not sure where to start? Use this chart to get a fast overview of the 7 side dump trailer manufacturers we’ll explore in detail below.

2. SmithCo

SmithCo has been in the side dump trailer business for over 30 years. They’re based in Le Mars, Iowa. And they’ve stuck to one thing—side dumps.

That says a lot.

I heard about SmithCo from a foreman on a road project. He pointed at a trailer and said, “That one? It’s been through four seasons, two crews, and more rock than I can count.” That kind of field-tested trust is hard to ignore.

Their mission is simple: build side dump trailers that hold up under pressure and make your job easier.

Trailer Models & Custom Options

SmithCo offers a wide range of trailer designs built for real work, not just spec sheets:

• SX Series: Everyday side dump trailers with different axle setups
• MHVSR and SHV Tubs: For medium to super high-volume material
• Mine Series: Made for extreme jobs in rough, heavy terrain
• Double Tub Series: Dual or triple tubs to move more at once
• A-Trains & B-Trains: Multi-trailer setups for larger hauls

One thing I like? If you have a very specific load or layout, they’re open to building around it. Not everyone does that.

Service, Support & Certifications

Here’s where SmithCo stands out. I’ve dealt with companies that disappear after delivery. SmithCo isn’t one of them. They offer:

• Warranty: Covers major parts, and they stand behind it
• Parts Availability: Quick to ship—no waiting weeks
• Responsive Support: You talk to someone who knows gear

Their trailers also meet U.S. DOT and ISO standards. That helps if you’re hauling across state lines or need to stay inspection-ready.

Final Verdict

SmithCo is built for serious work. If you rely on side dump trailers every day—especially in tough industries like construction or mining—this is a brand you can trust.

The catch? They focus only on side dumps. So if you need other trailer types, you’ll need to source elsewhere.

But if what you care about is reliability, support, and getting a trailer that won’t leave you stranded mid-job—SmithCo should be on your radar.

3. Clement Industries

Clement Industries has been around since 1950. They’re based in Minden, Louisiana. That’s over 70 years of trailer-building experience.

They started out making steel dump bodies for trucks. Now, they focus on full-size dump trailers — and they’ve stayed close to their roots. Their trailers are built to take on rough jobs like hauling gravel, scrap, and debris. And they’ve kept their production local.

I spoke to a yard manager who said, “We’ve had the same Clement side dump for six years. Still works like day one.” That kind of feedback means something.

Their goal is simple: build trailers that hold up in tough work environments — without overcomplicating things.

Trailer Models & Custom Options

Clement offers a few different models, depending on what you haul:

• SideStar2: Side dump trailer with a 24-cubic yard tub and lighter weight for more payload
• AllStar MT: Built with abrasion-resistant steel for hauling rough materials
• AlumiStar SS: Lightweight aluminum end dump for smoother jobs with less wear

They also offer:

• Tub sizing options
• Axle spacing and suspension types
• Steel or aluminum builds
• Tire and wheel upgrades

If your job has special loading needs or weight limits, they can adjust the build.

Service, Support & Certifications

Clement keeps things simple — but they don’t cut corners on service.

They offer:

• Warranty: Coverage for structural and key parts
• Parts: Quick access through dealers or direct from factory
• Support: Real people, fast replies — not endless hold music

Their trailers meet FMVSS and DOT standards. They’re built with U.S. steel and follow strict shop inspections before shipping.

Final Verdict

Clement is a good fit if you want a no-nonsense trailer that lasts. Their steel tubs can cause abuse. And if you’re hauling rock, scrap, or demo debris — you’ll get your money’s worth.

Downsides? They don’t offer as many tech options or advanced controls as some newer brands. If you need sensors, hydraulics integration, or automated features, this might not be the right fit.

But if your crew values strength, simplicity, and easy servicing — Clement trailers are worth looking into.

4. Rhinotrail

Rhinotrail has been building trailers for over 12 years. They’re based in Liangshan, Shandong — a place known as the trailer capital of China.

I’ve worked with a lot of suppliers over the years. Some make promises. A few actually deliver. Rhinotrail is one of the few.

Their focus? Helping businesses like yours haul smarter, with trailers built for real work — not just showroom looks. Whether you’re hauling stone, scrap, grain, or fuel, they offer a wide mix of options.

What sets them apart is their willingness to build around your needs. You’re not stuck with a one-size-fits-all setup.

Trailer Models & Custom Options

Rhinotrail offers several trailer types, including:

• Side Dump Trailers: Strong hydraulic systems and heavy-duty frames
• Flatbeds: Great for steel, lumber, or machinery
• Dump Trailers: Built to handle bulk loads like gravel or soil
• Tankers: For fuel, chemicals, or food-grade liquid
• Low Beds: For oversized equipment or hard-to-balance loads
• Container Trailers: For intermodal transport

Need something built a little wider? With a different axle setup? They’ll adjust it.

In my case, I needed a custom tub height to meet a local weight limit. Rhinotrail came back with drawings in less than 48 hours. That level of response is rare.

Service, Support & Certifications

Here’s what you can expect:

• Warranty: Covers key structural and hydraulic components
• Parts: Shipped fast, even internationally
• Support: You’ll get real answers from a real team

They also follow China Compulsory Certification (CCC) rules and meet export requirements for multiple countries, including the U.S., Southeast Asia, and Africa.

Final Verdict

If you want a side dump trailer built around your needs—and not just a catalog model—Rhinotrail is worth your time.

They may not be as well-known globally as U.S. brands, but don’t let that fool you. They’ve built thousands of trailers for tough conditions.

The downside? You’ll need to factor in shipping and communication across time zones. But for the price and flexibility, it’s a trade-off many find worth it.

If you’re tired of cookie-cutter builds and want someone who listens, start with Rhinotrail.

5. J&J Truck Bodies & Trailers

J&J has been building trailers and truck bodies since 1958. They’re based in Somerset, Pennsylvania.

They started small, building steel dump bodies for local contractors. Over the years, they expanded into trailers, including side dumps, end dumps, and specialty builds.

What I like most is their focus on tough jobs. Their trailers aren’t designed for show — they’re built to haul coal, stone, scrap, and just about anything else you can throw at them.

If you’ve ever worked in rough conditions — muddy job sites, rocky terrain — you know the kind of abuse a trailer takes. J&J gets that. And their buildings reflect it.

Trailer Models & Custom Options

J&J offers a few different side dump options, depending on your job type:

• DST Side Dump Trailer: Heavy-duty build with a low center of gravity for better stability
• Aluminum Side Dumps: Lighter weight, better for payload and fuel savings
• Steel Side Dumps – Great for mining and demolition with high abrasion resistance

Customizations include:

• Tarp systems
• Axle configurations
• Tub length and height
• Suspension types (air or spring)

One buyer I spoke to said they got a custom setup to meet Pennsylvania bridge laws — and J&J walked them through it from start to finish.

Service, Support & Certifications

J&J trailers come with:

• Warranty: Varies by model, but covers structural components
• Parts: Fast delivery from their in-house warehouse
• Support: Knowledgeable staff that actually answers the phone

They meet FMVSS standards and offer trailers rated for DOT compliance across multiple states.

Final Verdict

If your work involves heavy material and rough conditions, J&J is a name you can count on. Their trailers feel like they’re built by people who’ve actually worked construction — not just read about it.

They’re not the cheapest. And if you’re outside the U.S., lead times and shipping can be a factor.

But if you want a side dump that takes a beating and keeps going? J&J is worth a serious look.

6. Trail King Industries

Trail King has been building trailers since 1974. They’re based in Mitchell, South Dakota, and they’ve grown into one of the largest specialized trailer manufacturers in North America.

You’ll find their trailers in construction, agriculture, oilfields, and even wind energy. That’s how far their reach goes.

I remember seeing a Trail King side dump in action during a grain haul. The operator said, “I’ve been using this trailer for four years — never had a rollover or a cracked weld.” That stuck with me.

Trail King’s goal is simple: build trailers that move more, last longer, and keep your crew working — not waiting on repairs.

Trailer Models & Custom Options

Trail King’s side dump trailer lineup is strong and versatile:

• TKSD Side Dump Series: Built for stability and speed. Features a low center of gravity and tough rubber-sealed tub
• Live Bottom Trailers: For sensitive loads like asphalt or ag products
• Construction End Dumps: Great for sand, rock, or job site cleanup

They also offer:

• Custom axle setups
• Length and tub size adjustments
• Tarp systems and hydraulic kits
• Paint options to match your fleet

Their design is smart. The tub pivots from the center, which helps prevent tipping. That matters when you’re dumping on uneven ground.

Service, Support & Certifications

Here’s what you get:

• Warranty: Covers key components, frame, and hydraulics
• Parts: Available through a wide dealer network
• Support: Fast, with detailed manuals and actual people to talk to

Trail King trailers meet U.S. DOT and OSHA standards. They also meet requirements for Canadian markets.

Final Verdict

If you need a trailer that handles heavy loads without stress, Trail King is worth looking into. Their side dumps are stable, strong, and built for tough jobs.

The price is on the higher end. And if you’re outside North America, support may take longer.

But if your priority is quality over cutting corners — and you want a trailer that holds up for years — Trail King delivers.

7. Cross Country Manufacturing

Cross Country Manufacturing is based in Morden, Manitoba, Canada. They started operations in 2005 and have grown quickly across North America.

What caught my attention about them wasn’t just their trailers — it was how often I heard their name in hauler groups. One guy in Alberta told me, “We’ve run the same side dump for six winters. It’s been rock solid.”

That kind of long-term durability speaks volumes.

Their mission is simple: build trailers that hold up in rough terrain and brutal weather. And being a Canadian company, they understand cold, salt, and road wear better than most.

Trailer Models & Custom Options

Their side dump lineup focuses on strength, simplicity, and ease of use:

• Cross Country Side Dump Trailer: Comes in steel or aluminum; designed with a strong pivot system and reinforced tub
• End Dump Trailers: Available in frameless or frame-type configurations
• Flatbeds & Drop Decks: ideal for general cargo and equipment

Custom features include:

• Axle spreads and configurations
• Tarp systems
• Brake and suspension upgrades
• Custom paint and branding

If you’re running region-specific loads or hauling in rough winter conditions, their side dumps are built for it.

Service, Support & Certifications

Cross Country doesn’t just build trailers — they back them:

• Warranty: Covers major components and frame welds
• Parts: Stocked through their dealer network across Canada and the U.S.
• Support: Straightforward, no-frills help from people who know trailers

Their trailers are certified by Transport Canada and meet FMVSS standards in the U.S.

Final Verdict

If you’re in a northern region — Canada, the Midwest, or anywhere with harsh winters — Cross Country is worth a serious look.

Their trailers are simple, tough, and easy to service. They might not have the flashiest options or high-tech add-ons, but they make up for it with real-world dependability.

For small fleets or individual owner-operators who need gear that survives rough roads and colder climates, Cross Country trailers are built with you in mind.

8. Sidump’r Trailer Company

Sidump’r Trailer Company was founded in 1999. They’re based in Plainview, Nebraska — right in the middle of farm country and construction zones.

That matters. Because when a company grows up serving rural roads, job sites, and tough terrain, their designs reflect that.

I met an operator who told me, “You don’t baby these trailers. They’re built to work, not to look pretty.” That stuck with me. And honestly, that’s exactly what most buyers want.

Their mission is all about durability. They focus only on side dumps, which means every design update comes from hands-on feedback from drivers, not engineers in a lab.

Trailer Models & Custom Options

Sidump’r doesn’t try to make everything — just strong, dependable side dumps.

Here’s what they offer:

• ST Series Side Dump: Heavy-duty trailer with center pivot dump and low rollover risk
• AXXIS Side Dump: Shorter frame for tight job sites or smaller payloads
• Train Configurations: For high-volume operations (multiple trailers pulled together)

Customization options include:

• Tub sizes (in cubic yards)
• Axle setups (spread or tri-axle)
• Suspension systems
• Custom color and company decals

Their tubs are known for having fewer moving parts. That means less maintenance, which matters when you’re out on a job site with no mechanic nearby.

Service, Support & Certifications

Here’s what you can expect:

• Warranty: Covers major welds and structural parts
• Parts: Available directly or through a growing dealer network
• Support: Their team is small but responsive. You usually speak to someone who knows the product

Trailers are DOT compliant and ready for interstate and commercial use.

Final Verdict

Sidump’r is best for buyers who want something that just works. No fluff. No unnecessary electronics. Just a strong trailer with a clean design.

It may not have the same brand power as some larger names, but that’s also why it’s more affordable.

If you’re an independent operator, small fleet, or local contractor — and you want a reliable side dump without all the headaches — Sidump’r is worth checking out.

Conclusion

I wrote this guide because I’ve been in your shoes.

Trying to find something reliable. Tired of breakdowns. Tired of silence when you need answers.

This list? It’s not fluff. It’s your starting point. Seven solid options. Different budgets. Different strengths.

All built for the kind of jobs where failure isn’t an option.

So what matters most to you? Support? Load capacity? Long-term value?

Whatever it is—don’t wait. Let this be the moment you stop guessing and start planning.

Don’t wait until another trailer lets you down.

Contact us today and we’ll help you move forward.