Rivian · Full-size electric pickup
Rivian R1T 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 R1T in inches — plus the covers built for it. No guesswork, no wrong-size returns.
Find your bed size in 10 seconds
The Rivian R1T has come in 1 bed length across 2022–2026:
Select your year above for the exact bed length that fits your truck.
Not sure which bed you have?
Two R1Ts 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.
R1T bed sizes & specs, year by year
R1T · 1st gen
| Bed | Length | Inches | Cabs | |
|---|---|---|---|---|
| 4.5 ft | 4'6" | 54" | Crew Cab | Covers → |
- Cab styles
- Crew Cab
- Drivetrain
- AWD
- Max towing
- 11,000 lb
- Max payload
- 1,760 lb
- MSRP from
- $69,900 (launch)
Engines (5)
- Dual-Motor — Standard pack 533 hp · 610 lb-ft · Electric
- Dual-Motor — Large pack 665 hp · 829 lb-ft · Electric
- Quad-Motor — Large pack 835 hp · 908 lb-ft · Electric
- Tri-Motor — Max pack 850 hp · 1103 lb-ft · Electric
- Quad-Motor — Max pack (Gen 2) 1025 hp · 1198 lb-ft · Electric
Single bed configuration only: 54 in (4'6") tailgate up, ~83.6 in tailgate down; ~50-51 in between wheel wells. Crew Cab only, AWD only. Unique Gear Tunnel (~11.6 cu ft) behind the cab and front trunk (~11 cu ft). Gen 2 update arrived for 2025 (revised motors/packs/electronics, same bed). AFTERMARKET TONNEAU FITMENT IS LIMITED — hidden bed tracks, Gear Tunnel door clearance, Gear Guard cameras, and an electronic tailgate complicate generic covers; Rivian sells its own manual and powered tonneau. Trucks ordered without a cover ship without bed side rails.
What fits in an R1T bed
Bed length in inches only means something once you know what it swallows. Here's how the loads people actually haul line up against every R1T bed on record.
| Load | Needs | 4.5 ft · 54" |
|---|---|---|
| 4×8 ft sheet of plywood or drywall | 96" | Won't fit |
| 8 ft 2×4s and trim lumber | 96" | Won't fit |
| Full-size dirt bike | 85" | Won't fit |
| Adult mountain bike, wheels on | 70" | Tailgate down |
| Two-person truck bed tent | 60" | Tailgate down |
| Standard 48×40 in shipping pallet | 48" | Fits, tailgate up |
"Tailgate down" assumes the roughly 18 inches a dropped tailgate adds on a typical pickup — measure yours before you count on it, and strap anything that overhangs. Width is the other half of the answer: a 48-inch sheet only lies flat on the bed floor when the wheel wells are more than 48 inches apart, otherwise it rides on top of the arches. For cubic feet of mulch, soil or gravel, run your dimensions through the bed volume calculator.
Volume is one limit, weight is the other. Check your R1T's real payload → · what it can actually tow →
More R1T specs
Bed size is one number among several. These carry the rest of the reference data for this truck specifically.
Other trucks with a R1T-size bed
Cross-shopping, or checking whether a cover you already own could move to another truck? These pickups come in a bed within two inches of a R1T bed.
Same length still isn't the same cover — rail height and bed-rail profile differ by truck. Confirm with the fitment checker before you buy or swap.
Tonneau covers that fit the R1T
Not sure a cover will fit? Run the R1T fitment checker → for your bed length, the cover types that fit, and any R1T-specific gotchas.
Hands-on R1T cover reviews are landing soon. In the meantime, browse vetted, correctly-sized options for your bed:
R1T bed size — frequently asked
What bed sizes does the Rivian R1T come in?
The Rivian R1T has been offered with 1 bed length: 4.5 ft (54"). 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 R1T 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 R1T?
The current R1T (2022–present) comes with 4.5 ft (54").
Will a tonneau cover from an older R1T 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 R1T changed.
Will a 4×8 sheet of plywood fit in an R1T?
No. Even the longest R1T bed (54") plus a dropped tailgate falls short of 96 inches, so an 8 ft sheet will overhang and needs a flag and proper tie-downs. Width matters too: a 48-inch sheet only lies flat on the floor if the gap between the wheel wells is wider than 48 inches — on mid-size trucks it rides on top of the wheel arches instead.
How much can an R1T tow?
Properly equipped, the R1T has been rated up to 11,000 lb across the generations on this page, with a maximum payload of about 1,760 lb. Those are best-case figures for a specific engine, cab and axle combination — your truck's door-jamb sticker and owner's manual are the numbers that count. Run them through the towing and payload calculators to see what's actually left for a trailer once passengers and gear are on board.
What cab configurations does the R1T come in?
The R1T has been offered as Crew Cab. Cab choice is what usually decides bed length — a bigger cab on the same wheelbase means a shorter bed, which is why two trucks from the same year can need different covers.
Does a tonneau cover on an R1T improve gas mileage?
A little, and only at highway speed. Independent testing puts the gain on a typical pickup at roughly 1–2%, which is real but small — on most R1T trucks that's a few dollars a tank, not a payback plan. Buy a cover for the dry, locked, secure bed; treat the mileage as a bonus.
