2021 Ram 2500 Tradesman 2dr Regular Cab LB (6.4L 8cyl 8A) Max Towing Capacity & Payload
Max Towing Capacity
17,350 lbs
Safe limit: 13,880 lbs (80% rule)
Max Payload
4,010 lbs
Often the real limiting factor
Fuel Economy
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See fuelly data below
The 2021 Ram 2500 Tradesman 2dr Regular Cab LB (6.4L 8cyl 8A) is rated to tow up to 17,350 lbs powered by the 6.4L. For real-world towing, the practical limit is 13,880 lbs — that's 80% of max, giving you margin for hills, headwinds, and load variation. The payload rating of 4,010 lbs is the number to watch closely — once you add passengers, hitch weight, and gear, it fills faster than most people expect. With this setup, you're looking at a great selection of travel trailers, toy haulers, and many fifth wheels.
Recommended Equipment
Towing Gear for This Truck
Matched to this trim's Class V hitch class and 17,350 lb tow rating
Class V Hitch Receiver
Required for towing. 2" receiver is standard on tow-equipped models.
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Trailer Wiring Adapter
7-pin to 4-pin adapters for trailer brake lights and signals.
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Brake Controller
Required by law in most states for trailers over 3,000 lbs.
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Weight Distribution Hitch
Strongly recommended for trailers over 6,000 lbs to level the load and reduce sway.
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Full Data
Specifications
Towing & Capacity
Engine & Performance
Dimensions
SpecificationValueShopLearn More
Towing
Payload & Weight
Curb Weight
5,988 lbs
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Engine
Engine
6.4L
Horsepower
410 HP
Torque
429 lb-ft
Transmission
8-speed shiftable automatic
Drive Type
RWD
Fuel Type
Regular unleaded
SpecificationValueShopLearn More
Dimensions
Overall Length232.0"
Overall Width79.4"
Height78.0"
What Can I Tow?
RV Class Compatibility
Based on a safe tow limit of 13,880 lbs and 4,010 lb payload. Shows what % of each RV class in our database you can tow.
RV Type
Weight Range
Coverage
Status
⚠ Vehicle capacity only — does not include passengers, gear, or tongue weight. Run the full calculator →
Compare Configurations
Other 2021 Ram 2500 Trims
| Configuration | Max Towing | MPG | |
|---|---|---|---|
| 2024 Ram 2500 Tradesman RWD | 20,000 lbs | 13.6 mpg | View → |
| 2024 Ram 2500 Tradesman Fleet 4dr Crew Cab SB (6.4L 8cyl 8A) | 20,000 lbs | — | View → |
| 2024 Ram 2500 Tradesman 4dr Crew Cab LB (6.4L 8cyl 8A) | 20,000 lbs | — | View → |
| 2024 Ram 2500 Tradesman RWD | 19,990 lbs | 13.6 mpg | View → |
| 2024 Ram 2500 Tradesman 2dr Regular Cab LB (6.4L 8cyl 8A) | 19,990 lbs | — | View → |
| 2024 Ram 2500 Tradesman 4WD | 19,980 lbs | 13.6 mpg | View → |
| 2024 Ram 2500 Tradesman 2dr Regular Cab 4WD LB (6.4L 8cyl 8A) 4WD | 19,980 lbs | — | View → |
| 2024 Ram 2500 Tradesman 4WD | 18,230 lbs | 13.6 mpg | View → |
| 2024 Ram 2500 Tradesman 4dr Crew Cab 4WD LB (6.4L 8cyl 8A) 4WD | 18,230 lbs | — | View → |
| 2024 Ram 2500 Rebel 4WD | 16,870 lbs | 13.6 mpg | View → |
Questions & Answers
Common Questions
How much can I actually tow with my 2021 Ram 2500 Tradesman 2dr Regular Cab LB (6.4L 8cyl 8A)?
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The 2021 Ram 2500 Tradesman 2dr Regular Cab LB (6.4L 8cyl 8A) is rated at 17,350 lbs maximum — but the real-world best practice is the 80% rule: target 13,880 lbs as your practical limit. This gives you margin for hills, headwinds, braking distance, and real-world load variance. More critically, check your payload first — the door sticker tells you your specific truck's limit, and payload may be your actual binding constraint.
What about payload — how much stuff can I put in the truck?
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You have 4,010 lbs of payload capacity — that's everything going IN the truck: passengers (~150 lbs each), camping gear, coolers, and critically the tongue weight from your trailer. For bumper pull trailers, tongue weight is typically 10–15% of the trailer's loaded weight. It fills up faster than most people expect, especially on longer trips.
What kind of hitch do I need?
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For the 2021 Ram 2500 Tradesman 2dr Regular Cab LB (6.4L 8cyl 8A), you need a Class V receiver hitch rated for 17,350 lbs. Don't skimp here — the hitch is the critical link between truck and trailer. For fifth wheel towing, you'll need a dedicated kingpin-style fifth wheel hitch mounted in the truck bed.
What types of RVs will work with my truck?
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With your 13,880 lb safe towing capacity, you're looking at a great selection of travel trailers, toy haulers, and many fifth wheels. The compatibility chart above shows what percentage of each RV class in our database you can handle. Use the Tow Calculator to check a specific RV including gear, water, and passengers.
What does GVWR mean and why should I care?
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GVWR is Gross Vehicle Weight Rating — the maximum your truck can weigh when fully loaded with people, gear, and fuel. Your truck's GVWR is 0 lbs. Exceed it and you're over-stressing brakes, suspension, and tires. This is different from towing capacity — it's about what the truck itself can carry.
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