Cab and chassis truck: 4500 or 5500 for hotshot?

Walk onto a commercial lot and you'll see trucks with nothing behind the cab but two steel frame rails. That's a cab and chassis truck. The buyer decides what goes on the back, and for hotshot work that's usually a flatbed or a hauler bed with a gooseneck ball.

The question most drivers bring to us is simple: should I buy a 3500 pickup, or step up to a 4500 or 5500 chassis cab? The answer comes down to ratings, the CDL line and what freight runs near you.

TRUCK GVWR + TRAILER GVWR = GCWR

What is a cab and chassis truck?

A chassis cab truck comes from the factory with the cab, engine, transmission, frame and axles. No bed. The frame behind the cab is flat and clean so a body builder can mount whatever the work needs. The same chassis can end up as a hotshot flatbed, a dump truck, a tow truck or a service body.

Three numbers matter when you shop one:

• GVWR: the most the truck itself may weigh loaded, including the body. It's on the door label.
• GCWR: the most the truck plus trailer may weigh together, set by the manufacturer.
• CA (cab to axle): the distance from the back of the cab to the rear axle center. Ram's 2026 chassis cabs come in 60, 84, 108 and 120 in CA. Hotshot flatbeds usually go on a 60 in CA; the longer ones are for big boxes and dumps.

3500 vs 4500 vs 5500 chassis cab ratings

These are manufacturer maximums with the diesel engine. Your truck's real ratings depend on cab, drive, axle and package, so read the door label before you trust any chart.

SOURCE: Ram 2026 Chassis Cab press kit, Stellantis media, May 1, 2026 (source). This is the Canadian release; US ratings can differ, so confirm on the truck. Chevrolet lists 2026 Silverado 4500HD at 14,001 to 16,500 lb GVWR and 5500HD at 17,500 to 19,500 lb, with 37,500 lb as the lineup maximum GCWR (chevrolet.com, checked Oct 2026).

The payload jump from a 3500 to a 5500 is about 4,700 lb on paper. The bed comes out of that. A steel hotshot flatbed body around 8.5 by 8 ft weighs roughly 1,100 to 1,400 lb in dealer listings, so a 5500 with a body still has more room on its own frame than a 3500 dually pickup has with its factory box.

The CDL math with a gooseneck

Here's where a chassis cab changes your life as a carrier. The federal CDL classes in 49 CFR 383.91 look at the combination: a Class A license applies when the combined rating is 26,001 lb or more and the trailer is rated over 10,000 lb. Combined rating here means the truck's GVWR plus the trailer's GVWR, or the actual weights if higher, and under 49 CFR 383.5 a GCWR printed on the truck's certification label counts too if it's higher (both checked Oct 2026).

CDL CHECK, EXAMPLENO. 0201

EXAMPLE

5500 chassis cab GVWR

19,500 lb

Gooseneck trailer GVWR

14,000 lb

Combined rating

33,500 lb

Trailer over 10,000 lb?

Yes

LicenseClass A CDL

Now flip it. To stay at or under 26,000 lb combined with that 5500, the trailer could be rated for only 6,500 lb. That's a small trailer behind a big truck, and it wastes what you paid for. A 4500 at 16,500 lb leaves 9,500 lb of trailer rating, still tight. This is why non-CDL hotshots usually run a 3500 at 10,000 to 12,000 lb GVWR with a light gooseneck, and why 4500 and 5500 owners almost all hold a Class A.

Run your own truck and trailer through the hotshot GCWR and non-CDL weight checker before you buy. And check your state: some states add license classes or registration rules for heavy combinations that the federal rule doesn't.

When a chassis cab makes sense

A chassis cab is a good fit when:

• You already have, or plan to get, a Class A CDL.
• Your freight is heavy and regular: oilfield tools, pipe, steel, equipment with a 40 ft gooseneck behind you.
• You want the truck to carry its own share of the weight, not just pull.
• You'll put enough miles on it that durability beats a cheaper purchase price.

It's the wrong buy when you want to stay non-CDL, mostly haul light partials, or need the truck as a daily driver at home. Our hotshot trucking statistics page shows how the industry splits between those two kinds of operators.

What a cab and chassis truck costs

The truck is only part of the bill. Plan for three pieces:

1. The chassis. New 2026 Ram 5500 crew cab, 84 in CA, Cummins chassis cabs were listed by dealers at $81,770 and $83,580 MSRP in October 2026 (comvoy.com listings). Regular cab, gas engine and 4500 models list lower.
2. The body. A hauler or flatbed body, gooseneck hitch, toolboxes and lights. Prices swing with steel or aluminum, length and options, so get a written quote from the body builder.
3. Upfit time. A new chassis often waits weeks at the body shop. That's weeks of payments with no revenue.

BUDGET, EXAMPLENO. 0202

EXAMPLE

Chassis (example)

$80,000

Flatbed body + hitch (example)

$12,000

Registration, taxes, lights, misc (example)

$6,000

Before the trailer$98,000

Those are EXAMPLE figures to show the shape of the bill, not quotes. Used chassis cabs with bodies already on them cost less, but check the frame, the hitch mount and the brake system closely. The full startup bill, trailer and insurance included, is in hotshot startup cost.

Cab chassis truck sales: buying tips

• Order by the label, not the brochure. Ask the dealer for the exact GVWR, GAWR and GCWR of the build before you sign.
• Match CA to the body. Confirm with the body builder that the bed length, hitch position and toolboxes fit the CA you're ordering.
• Weigh it finished. Take the upfitted truck across a certified scale. Empty weight subtracted from GVWR is your real payload.
• Check the hitch rating. The gooseneck ball and its mount have their own rating. The lowest rating in the chain is your limit.
• Think about registration. A heavier truck can mean a higher registration class and, once combined weight passes 26,000 lb, IFTA fuel tax reporting for interstate runs.

Chassis cabs beyond hotshot

Cab and chassis trucks aren't only a hotshot thing. Every 26 ft box truck on the road is a medium-duty chassis with a box bolted on, which is why the box truck loads guide talks about the same GVWR and CDL numbers. The rules don't care what body you picked. They care about the label.

Dispatch for a heavy hotshot

A 5500 with a 40 ft gooseneck can take loads a pickup can't, but only if someone filters for them. Our hotshot dispatching service starts with your door label and trailer plate, sends you the heavier posts that fit, counters the rate and lines up the reload. Each load comes to you for a yes or no, and the rate confirmation goes straight from the broker to you. The TruckQuick dispatch desk runs every rig we dispatch the same way.

Sources

• 49 CFR 383.91 and 383.5, via Cornell LII (checked Oct 26, 2026)
• Ram 2026 Chassis Cab press kit, Stellantis media, May 1, 2026
• Chevrolet Silverado chassis cab commercial page (checked Oct 2026)
• Dealer MSRP listings, comvoy.com (October 2026); bed weights from dealer listings (October 2026)