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
Your 2023 R1T
Came in 1 bed length (1st gen):
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.
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.