Ram · Heavy-duty 3/4-ton pickup
Ram Ram 2500 bed dimensions & sizes by year
Buying a tonneau cover and not sure it'll fit? Pick your model year to get the exact bed length of your Ram 2500 in inches — plus the covers built for it. No guesswork, no wrong-size returns.
Find your bed size in 10 seconds
Your 2021 Ram 2500
Came in 2 bed lengths (5th gen (Ram 2500)):
Your 2021 could be any of these depending on cab — measure your bed to be sure which one you have.
Not sure which bed you have?
Two Ram 2500s from the same year can have different beds depending on cab. Don't trust the badge — measure it. It takes 30 seconds and saves a return.
- 1
Close the tailgate.
- 2
Put a tape measure on the bed floor against the bulkhead (the wall behind the cab).
- 3
Measure straight back to the inside of the closed tailgate.
- 4
Match that number to a bed length above — covers are sold by category (5.5 ft, 6.5 ft, 8 ft…), so round to the nearest one.
Ram 2500 bed sizes & specs, year by year
Ram 2500 · 5th gen (Ram 2500)
| Bed | Length | Inches | Cabs | |
|---|---|---|---|---|
| 6.4 ft | 6'4" | 76.3" | Crew Cab, Mega Cab | Covers → |
| 8 ft | 8'0" | 98.3" | Regular Cab, Crew Cab | Covers → |
- Cab styles
- Regular Cab, Crew Cab, Mega Cab
- Drivetrain
- RWD, 4WD
- Max towing
- 19,990 lb
- Max payload
- 4,000 lb
- MSRP from
- $45,000 (launch)
Engines (2)
- 6.4L HEMI V8 410 hp · 429 lb-ft · Gas
- 6.7L Cummins Turbo Diesel I6 370 hp · 850 lb-ft · Diesel
Current body. Mega Cab pairs with the 6'4" (76.3") bed ONLY. Bed inner dims unchanged from 4th gen — covers cross-fit 2010-2026. Inches cross-confirmed (76.3/98.3).
Ram 2500 · 4th gen (Ram 2500)
| Bed | Length | Inches | Cabs | |
|---|---|---|---|---|
| 6.4 ft | 6'4" | 76.3" | Crew Cab, Mega Cab | Covers → |
| 8 ft | 8'0" | 98.3" | Regular Cab, Crew Cab | Covers → |
- Cab styles
- Regular Cab, Crew Cab, Mega Cab
- Drivetrain
- RWD, 4WD
- Max towing
- 17,980 lb
- Max payload
- 3,990 lb
- MSRP from
- $30,000 (launch)
Engines (3)
- 5.7L HEMI V8 383 hp · 400 lb-ft · Gas
- 6.4L HEMI V8 (2014+) 410 hp · 429 lb-ft · Gas
- 6.7L Cummins Turbo Diesel I6 385 hp · 930 lb-ft · Diesel
Ram became a standalone brand in 2010. Mega Cab pairs with the 6'4" (76.3") bed ONLY. Inches cross-confirmed (76.3/98.3).
Ram 2500 · 3rd gen (Dodge Ram 2500)
| Bed | Length | Inches | Cabs | |
|---|---|---|---|---|
| 6.4 ft | 6'4" | 76.3" | Regular Cab, Quad Cab, Mega Cab | Covers → |
| 8 ft | 8'0" | 98.3" | Regular Cab, Quad Cab | Covers → |
- Cab styles
- Regular Cab, Quad Cab, Mega Cab
- Drivetrain
- RWD, 4WD
- Max towing
- 13,600 lb
- Max payload
- 3,500 lb
- MSRP from
- $24,000 (launch)
Engines (3)
- 5.7L HEMI V8 383 hp · 400 lb-ft · Gas
- 5.9L Cummins Turbo Diesel I6 325 hp · 610 lb-ft · Diesel
- 6.7L Cummins Turbo Diesel I6 (2007.5+) 350 hp · 650 lb-ft · Diesel
Last gen badged 'Dodge'. Mega Cab debuted MY2006, short (~76.3"/6'3") bed ONLY. Short box marketed 6'3" but fits as the 6'4"/76.3" bed (shared SKUs) — flagged verify. 2009 is a transition/overlap year with the Ram brand launch.
Tonneau covers that fit the Ram 2500
Not sure a cover will fit? Run the Ram 2500 fitment checker → for your bed length, the cover types that fit, and any Ram 2500-specific gotchas.
Hands-on Ram 2500 cover reviews are landing soon. In the meantime, browse vetted, correctly-sized options for your bed:
Ram 2500 bed size — frequently asked
What bed sizes does the Ram Ram 2500 come in?
The Ram Ram 2500 has been offered with 2 bed lengths: 6.4 ft (76.3") and 8 ft (98.3"). The exact bed on your truck depends on its model year and cab — choose your year above to see which covers fit.
How do I measure my Ram 2500 bed length?
Measure the inside floor of the bed, from the bulkhead (the wall behind the cab) to the inside of the closed tailgate. Round to the nearest standard size — tonneau covers are sold by bed-length category (e.g. 5.5 ft, 6.5 ft, 8 ft), not the exact inch.
What bed size is the newest Ram 2500?
The current Ram 2500 (2019–present) comes with 6.4 ft (76.3") and 8 ft (98.3").
Will a tonneau cover from an older Ram 2500 fit a newer one?
Not necessarily. Covers are matched to a specific generation and bed length, and both the bed length and the rail design can change between generations. Always match your exact model year and bed size before buying — the year-by-year table below shows where the Ram 2500 changed.