The JOMAC Difference
Powerfully Light.
Structurally Strong.
Built to Last.
For over three and a half decades, JOMAC has specialized in engineering custom truck bodies built from high-strength aluminum. While others have only recently shifted toward lightweight materials, aluminum has always been our foundation. That difference shows up in every weld, every mount, and every mile your fleet travels.
If you’re looking for a custom truck company that prioritizes quality, longevity, and long-term operating savings, this is where JOMAC stands apart.
What Sets Us Apart
Lifetime Warranty:
The only lifetime structural warranty in the industry.
True Custom Fabrication:
Every custom truck body is engineered for your specific application.
One-Stop Shop:
We design, build, mount, and service your truck body—all in-house.
Complete Packages:
We can source the chassis or mount to your existing truck.
Financing Available:
Flexible options to fit your budget.
Expert Service:
Reliable support that keeps your fleet on the road.
Why Aluminum Outperforms Steel
Aluminum has always been core to how we design and build. Not as a trend, but as our engineering foundation. At approximately ⅓ the weight of comparable steel bodies, our high-strength aluminum truck bodies help reduce fuel costs, increase payload capacity, and maintain unmatched durability in demanding work environments.
By engineering with 6000 series aluminum from the start, we optimize strength without unnecessary weight. We deliver trucks with aluminum beds that work harder, last longer, and cost less to operate over time.
Benefits of Our Aluminum Truck Bodies
Switching to an aluminum truck body doesn’t just reduce weight; it changes the economics of your entire fleet.
Want to see what fuel savings could look like for your fleet?
What it Means for You
Increased Payload
Less body weight means more of your GVWR goes toward tools, equipment, and materials.
Reduced Fuel Consumption
A lighter body means less engine load and measurable savings over time.
Reduced Emissions
Lower vehicle weight reduces engine load and overall emissions output.
Low Maintenance Costs
Fewer repairs, less repainting, and no corrosion-related deterioration keep your operating costs down.
Higher Resale Value
Better structural integrity and appearance over time means stronger resale value when it’s time to rotate your fleet.
Better Recycling Rates
Aluminum retains high material value at end of life, adding to your fleet’s long-term return.
Rust Resistance
Aluminum doesn’t rust, guaranteed for life. No corrosion, no structural deterioration, no premature replacement cycles.
6000 Series, Military-Grade Aluminum
JOMAC uses 6000 series aluminum, a high-strength, heat-treatable alloy widely used in structural applications where durability matters. Often referred to as “military-grade aluminum,” this material offers:
Exceptional
strength-to-weight ratio
Superior corrosion resistance
Long-term structural stability
Reduced overall vehicle weight at ⅓ the weight of comparable steel bodies
JOMAC applies the same engineering discipline and fabrication standards used in specialized, high-performance applications to every commercial truck body we build. That means your custom truck body is engineered for real-world field conditions, not light-duty use.
Guaranteed Rust-Free for Life
Steel rusts. Aluminum doesn’t. For fleets operating in northern climates with road salt, coastal environments, or high-humidity regions, corrosion can significantly shorten the lifespan of traditional steel truck bodies. JOMAC aluminum truck bodies are guaranteed rust-free for life, protecting both structural integrity and appearance over the long haul. That guarantee helps eliminate:
- Structural deterioration
- Costly repainting and body repairs
- Premature replacement cycles
- Long-term maintenance expenses
Less corrosion means more uptime, lower lifecycle costs, and stronger resale value when it’s time to rotate your fleet.
Engineered for Longevity
We stand behind our craftsmanship with the industry’s only Lifetime Structural Warranty. Our warranty covers the core aluminum framework of your truck body, protecting against manufacturing defects and structural failure under normal use, giving fleet managers long-term confidence in their investment. When you choose JOMAC, you’re choosing durability designed to outlast conventional alternatives.
Reliable Trucks. Real Results.
See how professionals across the country are using JOMAC truck bodies to get the job done. Browse our latest builds and hear from the clients who rely on JOMAC quality every day.
Frequently Asked Questions
Still have questions about aluminum truck bodies, custom fabrication, or what sets JOMAC apart? We’ve answered the most common ones below.
What is 6000 series aluminum, and why does it matter?
6000 series aluminum is a high-strength, heat-treatable alloy used in structural applications where durability, weight reduction, and corrosion resistance are critical. JOMAC builds exclusively with this material because it delivers the right balance of structural integrity and reduced weight, increasing payload capacity, lowering fuel consumption, and standing up to demanding job site conditions without sacrificing longevity.
What does “military-grade aluminum” mean in truck bodies?
It refers to premium, high-strength aluminum alloys engineered for demanding applications where performance cannot be compromised. JOMAC applies the same engineering discipline and fabrication standards to every commercial truck body we build, meaning your custom truck body is built for real-world field conditions, not light-duty use.
Are aluminum truck bodies strong enough for heavy-duty work?
Yes. 6000 series aluminum provides high structural strength while significantly reducing overall vehicle weight. JOMAC aluminum truck bodies are fully capable of supporting heavy-duty applications, including crane integration and demanding field service environments.
Does aluminum crack under stress?
Aluminum does not crack under stress when properly engineered. JOMAC builds structural reinforcement into every custom truck body to distribute loads and reduce fatigue stress over time.
How does aluminum perform in northern climates with road salt?
Aluminum naturally resists corrosion and does not rust, making trucks with aluminum beds the smarter long-term choice in regions where salt exposure quickly degrades steel bodies.
Is aluminum safe for crane applications?
Our crane-equipped bodies incorporate a high-strength steel substructure designed specifically to manage lifting forces, as well as crane safety interlocks that prevent driving unless the crane is properly stowed.
How much fuel can I save with a lighter aluminum body?
Fuel savings vary based on vehicle type and usage, but reducing body weight decreases engine load and improves fuel efficiency. Over time, fleets often see measurable reductions in fuel costs. Use our Fuel Calculator to estimate what that looks like for your operation.
Does a lighter truck body increase payload capacity?
Yes. Because the body weighs less, more of your vehicle’s Gross Vehicle Weight Rating (GVWR) can be allocated to the tools, equipment, and materials that actually drive your business.
How long should a heavy-duty aluminum truck body last?
With proper maintenance, a high-quality aluminum truck body can last decades. JOMAC backs every structural component with a Lifetime Structural Warranty.
What does JOMAC’s lifetime structural warranty cover?
It covers the structural integrity of the aluminum body framework, protecting against manufacturing defects and structural failure under normal use, giving fleet managers long-term confidence in their investment.
Can you accommodate safety department requirements?
Yes. JOMAC works directly with fleet managers and safety departments during the design phase to ensure every custom truck body meets operational, safety, and compliance standards from day one. Because everything is engineered in-house, we can incorporate compartment lighting, reflective markings, grab handles, anti-slip surfaces, equipment restraints, and layout configurations that support safe access and efficient workflow.
Can you standardize specs across a fleet?
Yes. We regularly work with fleet managers to standardize custom truck bodies across multiple vehicles while accommodating department-specific requirements.
What safety features are built into JOMAC truck bodies?
Our safety features are designed to meet company policies and regulatory standards. Available features include compartment lighting, ergonomic layouts, anti-slip surfaces, reflective markings, and crane interlock systems.
Do your crane bodies include interlock safety systems?
Yes. Depending on the crane and application, available integrations may include outrigger interlocks, PTO engagement safeguards, and overload protection compatibility. These systems ensure the crane operates only when proper conditions are met, reducing risk and supporting safe job-site practices.
Ready to Build Your Next Truck?
Get a quote today and see how JOMAC can help you power your work with precision-built, Powerfully Light™ performance.