Which bed length do I have on my Ram 2500?

Measure from the inside of the bulkhead (the wall right behind the cab) to the inside of the closed tailgate, at the floor. Round to the nearest half-foot and match it to the bed options in the table above for your model year - the door-jamb tag or window sticker also states it if the truck still has one.

Ram 2500 bed dimensions

The 2019-2026 Ram 2500 comes with a 6 ft 4 in bed (76.3 in long, 66.4 in wide at the floor, 51 in between the wheel wells, 20.1 in deep) or an 8 ft bed (98.3 in long).

Shop 6 ft 4 in bed tonneau covers Filtered to the Ram 2500

Key takeaways

Current generation (2019-2026): 6 ft 4 in - 76.3 in long; 8 ft - 98.3 in long.
Bed length is measured at the floor, tailgate closed, unless noted otherwise.
Between the wheel wells: 51 in on the widest bed - this is the narrowest point, not the overall box width.
This is the only generation we have on file.

Ram 2500 bed dimensions by generation and bed option
Years	Cab	Bed	Length	Width at floor	Between wheel wells	Depth	Tailgate down
2019-2026	Crew Cab	6 ft 4 in	76.3"	66.4"	51"	20.1"	-
2019-2026	Mega Cab	6 ft 4 in	76.3"	66.4"	51"	20.1"	-
2019-2026	Regular Cab	8 ft	98.3"	66.4"	51"	20.2"	-
2019-2026	Crew Cab	8 ft	98.3"	66.4"	51"	20.2"	-

Gear for the Ram 2500 bed

Covers, mats and extenders are sold by bed length - these searches are already filtered to the 6 ft 4 in bed above; switch the length in the search if your truck has the other option.

Want the exact part? Ram 2500 tonneau covers by bed and bed mats, with each fit confirmed on the maker's own site.

Tonneau coverFiltered to the 6 ft 4 in bedShop tonneau covers Bed matDrop-in rubber mat, matched to bed lengthShop bed mats Bed extenderFolds out over the open tailgate for long loadsShop bed extenders Cargo barWedges wall-to-wall to keep loads from slidingShop cargo bars

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Will a 4x8 sheet fit flat?

Yes, with the tailgate closed - the Ram 2500's widest bed is 51 in between the wheel wells (over the 48 in a sheet needs) and 98.3 in long (over the 96 in a sheet needs), so a 4x8 sheet lies flat on the floor.

Same truck, other specs: Ram 2500 specs hub and battery size.

Other Ram models

1500 3500

Source: Ram/FCA Media - 2019 Ram 2500 & 3500 Heavy Duty Specifications. Dimensions are the manufacturer's published figures for the trim and cab shown; aftermarket wheel/tire changes and spray-in liners can shave a fraction of an inch off the usable floor.