By Truck
Tonneau Covers for the Ram 1500 6'4" Bed
Nine inches longer than the short bed, and those nine inches change which cover types are comfortable choices.
By Michael W. · Published October 5, 2026
Cover & Cargo earns a commission from qualifying purchases made through links on this page, at no extra cost to you. It does not change what we recommend or the order we rank things in — here is how we choose and here is the full disclosure.
What this is based on: published manufacturer specifications and warranty terms, cited on each cover; independent published tests where they exist, named and linked; and verifiable owner reports of specific failure modes. We have not fitted these covers to a truck, we do not run a test lab, and we do not claim a test we did not run. Where the evidence for a cover is thin, the page says it is thin.
Quick picks
| # | Cover | Best for | Score | Price |
|---|---|---|---|---|
| 1 |  BAKFlip MX4The default hard folding cover, and the one most buyers should start from: 400 lb rating, a 5-year warranty, 100 percent bed access, and a seal design the maker revised specifically to stop bulkhead seepage. | Best overall | 8.4out of 10 | |
| 2 |  RetraxPRO MXThe manual version of the same idea and, for most people, the better buy: 500 lb rating, a limited lifetime warranty, double-wall aluminum slats, and no motor to fail. | Best retractable | 8.4out of 10 | |
| 3 |  Extang Solid Fold ALXThe highest published load rating in this roundup at 600 lb, on inch-thick TPO panels in an aluminum frame, with tool-free clamps and a five-year warranty. | Highest load rating | 8.3out of 10 | |
| 4 |  TruXedo Sentry CTInterlocking aluminum slats under a five-layer canvas skin: a 400 lb rating and up to six auto-engaging latches in a cover that still rolls up instead of folding. | Best hard roll-up | 8.2out of 10 | |
| 5 |  TruXedo TruXportThe roll-up most people mean when they say roll-up: vinyl over a clamp-on frame, 30 minutes to fit, 5-year warranty, rolls forward for 100 percent bed access with nothing left in the bed. | Best soft roll-up | 7.6out of 10 |
Scores are our own editorial judgment on the rubric published at our editorial policy page, weighing security, weather sealing, bed access, install effort, durability, value. They are read off published specifications, warranty terms and sourced owner reports. They are not measurements we took, and they are not user ratings.
RamBox check
Lidded compartments in the bed walls mean RamBox, which needs its own part number regardless of bed length. The RamBox page.
The short answer
Around 76 inches inside, bulkhead to closed tailgate. The 5'7" bed is around 67.
This is the Ram bed where a retractable makes sense. The permanent canister cost is absorbable here in a way it is not on the short bed.
Confirming the 6'4" bed
One measurement along the bed floor from the bulkhead to the inside face of the closed tailgate. Around 76 inches is the 6'4"; around 67 is the 5'7". Also confirm whether your 2019-2024 truck is the DT or the Classic, since both were sold under the same name with different part numbers.
What nine inches buys you
More than it sounds. On the 5'7" bed a folded hard cover occupies roughly a third of the total and a retractable canister takes a proportionally large bite out of a bed that was already the compromise for the back seat. At 6'4", both costs land in absorbable territory.
| Cover type when open | On a 5.5 ft bed | On a 6.5 ft bed | On an 8 ft bed |
|---|---|---|---|
| Soft roll-up, rolled forward | Smallest loss | Smallest loss | Smallest loss |
| Hard folding, stacked at the cab | Roughly a third of the bed | Roughly a quarter | Roughly a fifth |
| Retractable, canister at the bulkhead | Permanent, and proportionally largest | Permanent | Permanent, and easiest to absorb |
Figures are the proportion of bed length a folded or rolled cover typically occupies, not a manufacturer specification. They are here to make the trade-off visible, and no manufacturer in this registry publishes the dimension - including RETRAX, which does not publish canister dimensions for any retractable.
Practically, that means you can choose on specification. A retractable's security and one-handed operation stop being a trade against usable bed and start being a straight upgrade, which is why the RetraxPRO MX ranks second here and did not on the short-bed page.
Which cover
BAKFlip MX4
400 lb, 5-year warranty, 30-minute published no-drill install, revised EPDM seals with integrated drainage, folds flush to the cab for 100 percent bed access.
RetraxPRO MX
500 lb, limited lifetime warranty, double-wall aluminum slats, key-lockable at any position along the bed, independent of the tailgate, drain tubes, temperature tested -40°F to 180°F.
Extang Solid Fold ALX
600 lb on inch-thick TPO panels with tool-free Jaw-Grip clamps and triple-fin perimeter seals, removable without tools, 5-year limited warranty.
TruXedo Sentry CT
400 lb, aluminum slats under five-layer canvas, up to six auto-engaging latches, made in America, 5-year warranty including the fabric.
The picks in detail
#1 · Most truck owners
BAKFlip MX4
BAK Industries · Hard folding
The default hard folding cover, and the one most buyers should start from: 400 lb rating, a 5-year warranty, 100 percent bed access, and a seal design the maker revised specifically to stop bulkhead seepage.
What it does well
- 400 lb evenly distributed rating is at the top of the folding class, and it is published rather than implied
- The revised EPDM perimeter seal plus drain system targets the bulkhead, which is where folding covers actually leak
- Folds flat against the cab for full bed access without taking the cover off the truck
- 5-year warranty is longer than most hard folding covers in the same bracket
Where it gives way
- Folded open it occupies roughly the front third of the bed — the published 100 percent access means the bed is reachable, not that the space is free
- Textured black finish shows water spotting on dark trucks more than a gloss panel does
- No published figure for cover weight, so the one-person-install question is unanswered by the maker
Skip it if: Anyone who needs the bed open and covered at the same time all day. Folded against the cab it eats the front third of the bed, and nothing folding escapes that.
| Construction | Multi-layer aluminum, polymer-reinforced top panels |
|---|---|
| Finish | Textured matte black |
| Load rating | 400 lb, evenly distributed |
| Warranty | 5 years |
| Stated install time | 30 minutes or less |
| Drilling | None required on most trucks |
| Bed access | 100 percent — folds flush against the cab |
| Sealing | EPDM perimeter seals, integrated drainage |
Specifications read from RealTruck — BAKFlip MX4 (Gen 3) published specifications.
#ad We show no price until we can verify one. How this is funded
#2 · A retractable that will outlast the truck
RetraxPRO MX
RETRAX · Retractable (manual)
The manual version of the same idea and, for most people, the better buy: 500 lb rating, a limited lifetime warranty, double-wall aluminum slats, and no motor to fail.
What it does well
- Limited lifetime warranty on a 500 lb retractable is the strongest published pairing in this registry
- Locks at any point along the bed, not just closed — genuinely useful with long cargo
- Operates independently of the tailgate, so the tailgate is not part of the security story
Where it gives way
- The canister still costs you bed length at the bulkhead, same as any retractable
- Warranty does not transfer to the next owner
- Costs more than most folding covers that carry a lower, but adequate, rating
Skip it if: A second owner — RETRAX publishes the lifetime coverage as non-transferable.
| Construction | Double-wall aluminum slats |
|---|---|
| Finish | Matte black powder coat |
| Load rating | 500 lb, evenly distributed |
| Warranty | Limited lifetime, non-transferable |
| Locking | Key-lockable TraxLatch handle, infinite locking positions |
| Stated install time | Less than 60 minutes |
| Drilling | None — clamp-on rails, four quick-attach clamps |
| Temperature tested | -40°F to 180°F |
| Sealing | Integrated water management with drain tubes |
| Origin | Assembled in Grand Forks, North Dakota |
Specifications read from RealTruck — RetraxPRO MX published specifications.
#ad We show no price until we can verify one. How this is funded
#3 · Carrying load on top of the cover
Extang Solid Fold ALX
Extang · Hard folding
The highest published load rating in this roundup at 600 lb, on inch-thick TPO panels in an aluminum frame, with tool-free clamps and a five-year warranty.
What it does well
- 600 lb published rating is the highest here by 200 lb — the one cover in the group you can actually plan to load
- Inch-thick TPO panels are substantially more rigid than a thin aluminum skin
- Tool-free clamps, and removable without tools when you need the whole bed
Where it gives way
- Folded, access is two-thirds — the full-bed answer is taking the cover off, not folding it further
- Panel thickness means more weight to lift off than a thin folding cover
- Warranty text covers rails, aluminum, clamps, bows and hardware; the panel itself is described separately
Skip it if: Anyone who needs more than two-thirds of the bed open at once without pulling the cover off the truck.
| Construction | 1-inch EnduraShield TPO panels, aircraft-grade aluminum frame |
|---|---|
| Finish | Textured matte black |
| Load rating | 600 lb, evenly distributed |
| Warranty | 5-year limited on rails, aluminum, clamps, bows and hardware |
| Stated install time | Less than 1 hour, Level 1 difficulty |
| Drilling | None — tool-free Jaw-Grip clamps |
| Bed access | Two-thirds when folded; removable without tools for full access |
| Sealing | Triple-fin perimeter seals |
Specifications read from RealTruck — Extang Solid Fold ALX published specifications.
#ad We show no price until we can verify one. How this is funded
#4 · Security without losing the roll
TruXedo Sentry CT
TruXedo · Roll-up (hard)
Interlocking aluminum slats under a five-layer canvas skin: a 400 lb rating and up to six auto-engaging latches in a cover that still rolls up instead of folding.
What it does well
- 400 lb rating on a roll-up, which usually means a folding cover or nothing
- Up to six latches that engage automatically — no walking the bed to lock each one
- Warranty explicitly covers the fabric as well as the hard parts, which soft covers rarely do
Where it gives way
- The rolled slat bundle permanently occupies the front of the bed
- An hour to fit, where a soft roll-up is thirty minutes
- Canvas over slats is more surface to keep clean than a plain aluminum panel
Skip it if: Anyone who assumes a hard roll-up gives a clear bed. Rolled up, the slat bundle sits at the bulkhead and stays there.
| Construction | Interlocking aluminum slats with RTxTechWeave 5-layer, 120-grade canvas |
|---|---|
| Finish | Matte black |
| Load rating | 400 lb, evenly distributed |
| Warranty | 5-year limited, covering hard parts and fabric |
| Stated install time | Less than 1 hour, Level 1 difficulty |
| Locking | Level-2 locks, tension cable, up to 6 auto-engaging latches |
| Drilling | None — clamp-on with no-drill self-leveling rails |
| Origin | Made in America |
Specifications read from RealTruck — TruXedo Sentry CT published specifications.
#ad We show no price until we can verify one. How this is funded
#5 · Full bed access on a budget
TruXedo TruXport
TruXedo · Roll-up (soft)
The roll-up most people mean when they say roll-up: vinyl over a clamp-on frame, 30 minutes to fit, 5-year warranty, rolls forward for 100 percent bed access with nothing left in the bed.
What it does well
- Rolls completely forward, so full bed access costs you nothing but the roll itself
- 5-year warranty on a soft cover at this price is genuinely good
- Lightest install in the registry — 30 minutes, no tools beyond what is in the box
Where it gives way
- Vinyl offers no meaningful theft resistance; treat it as a weather and privacy cover
- Rolled to the bulkhead it sits proud of the rails, so it is visible and in the way of a full-height load
- Vinyl needs a UV protectant on a schedule or it chalks
Skip it if: Security. A soft vinyl cover keeps weather and eyes off your cargo; it does not stop a knife.
| Construction | Vinyl over a clamp-on aluminum frame |
|---|---|
| Finish | Vinyl grain |
| Warranty | 5 years |
| Stated install time | 30 minutes or less |
| Drilling | None — no cutting, drilling or modifications |
| Bed access | 100 percent — rolls forward to the cab |
| Mounting | Clamp-on, vehicle-specific hardware included |
Specifications read from RealTruck — TruXedo TruXport (Gen 2) published specifications.
#ad We show no price until we can verify one. How this is funded
Common questions
How long is the Ram 1500 6'4" bed inside?
Around 76 inches from the bulkhead to the inside face of the closed tailgate along the floor, against roughly 67 for the 5'7" bed.
Is a retractable cover a better idea on the 6'4" Ram bed?
Yes, comparatively. The canister cost is the same in absolute terms but a much smaller share of a 6'4" bed, which moves a retractable from a trade-off to a straight upgrade. The RetraxPRO MX publishes 500 lb, a limited lifetime warranty and locking independent of the tailgate.
What is the best tonneau cover for a Ram 1500 6'4" bed?
The BAKFlip MX4 for most owners at 400 lb and a 5-year warranty, or the RetraxPRO MX if security is the priority. If anything goes on top of the cover, the Extang Solid Fold ALX publishes 600 lb.
Does RamBox apply to the 6'4" bed too?
Yes. RamBox is available on both Ram 1500 bed lengths and changes the part number on both. Check your bed walls for lidded compartments before ordering anything.
Sources
- RealTruck — BAKFlip MX4 (Gen 3) published specifications, read 2026-10-05
- RealTruck — RetraxPRO MX published specifications, read 2026-10-05
- RealTruck — Extang Solid Fold ALX published specifications, read 2026-10-05
- RealTruck — TruXedo Sentry CT published specifications, read 2026-10-05
- RealTruck — TruXedo TruXport (Gen 2) published specifications, read 2026-10-05
Read next
By Truck
The Best Tonneau Covers for the Ram 1500
Six covers for the Ram 1500, with the RamBox fitment trap named before anything else - it is the costliest mistake in the category.
By Truck
Tonneau Covers for the Ram 1500 5'7" Bed
Covers for the 5'7" Ram bed, with the RamBox check first and the short-bed trade-off laid out after.
By Truck
The Best Tonneau Covers for a Ram 1500 With RamBox
Covers offered in a RamBox-specific part number, and how to confirm you need one before you order anything.
Guides
How to Measure Your Truck Bed
The four-minute measurement that prevents the most common return in this category, with the three mistakes people make.
Covers by Type
The Best Retractable Tonneau Covers
Five retractables with the published ratings, the warranty splits, and the canister cost no manufacturer in this category will state.
Covers by Type
The Best Tonneau Covers, Ranked
Seven covers across every type, scored on the published rubric, with the load rating and warranty gaps named rather than glossed.