How we made this guide: picks and specs come from our catalog and fitment data, owner quotes come from verified reviews and the guide was drafted with AI help, then checked and edited by Trevor Hall.
The best tonneau cover for a Ram 1500 with RamBox is the BAKFlip MX4 (from $1,199.99), a hard folding cover that lists RamBox parts for the 5'7" bed on both truck bodies. Under $500, the Extang Trifecta e-Series (from $339.99, a little more in RamBox form and still under $400) is the least expensive RamBox cover we carry. For a key lock on the cover itself, take the RetraxPRO MX from $2,149.99.
Every cover below has a part number whose fitment says it is for a truck with RamBox. A standard part will not do the job, because the bins change where the cover sits and clamps. RamBox parts usually cost a little more than the From price shown, up to about $100 more, so pick RamBox in the vehicle selector to see your exact price. If you are still choosing between covers for any Ram, our best tonneau covers for the Ram 1500 guide covers trucks without RamBox too.
Quick picks for RamBox trucks
- Best overall: BAKFlip MX4, hard folding, RamBox parts for both bodies.
- Best under $500: Extang Trifecta e-Series, soft folding.
- Best key lock: RetraxPRO MX, retractable.
- Best for racks: RetraxPRO XR, with full-length T-slot rails.
- Best for security rails and bed access: BAK Revolver X4s, hard roll-up.
| Pick | Type | From | RamBox part for | Own lock |
|---|---|---|---|---|
| BAKFlip MX4 | Hard folding | $1,199.99 | 5'7" on both bodies; 6'4" on 2012 to 2018 and Classic | No, tailgate locks it |
| Extang Trifecta e-Series | Soft folding | $339.99 | 5'7" on both bodies (either tailgate on 2019 to 2026); 6'4" on 2011 to 2018 and Classic | No lock listed |
| Access Lorado | Soft roll-up | $580.55 | 5'7" on both bodies to 2027; 6'4" on 2012 to 2018 and Classic; beds without factory tonneau rails | No, tailgate locks it |
| RetraxPRO MX | Retractable | $2,149.99 | 5'7" on both bodies; 6'4" on 2011 to 2018 and Classic | Key-lockable handle |
| RetraxPRO XR | Retractable, T-slot rails | $2,299.99 | 5'7" on the 2019 to 2026 truck | Key-lockable handle |
| BAK Revolver X4s | Hard roll-up | $1,399.99 | Both bodies | No, tailgate locks it |
| UnderCover Flex | Hard folding | $1,099.99 | One part: 5'7" on 2019 to 2026, for the silver cargo rails | No, tailgate locks it |
| Extang Solid Fold ALX | Hard folding | $1,199.99 | 5'7" on 2019 to 2026, either tailgate | No, tailgate locks it |
Every pick here is only as secure as a locked tailgate. The Retrax key handle locks the cover shut, but the cover still sits on top of the bed, so close and lock the tailgate on all of them.
What fits a Ram 1500 with RamBox
RamBox puts a lockable storage bin in each bedside, and the cover has to work around both. We checked 57 cover series for the Ram 1500. The 2019 to 2026 truck has a RamBox part in 29 of them, while 16 have one for the older trucks and the Classic. Pace Edwards covers, UnderCover one-piece lids and Roll-N-Lock have none, so they are left out.
Body comes first. For 2019 Ram introduced a new 1500 and kept selling the old one as the 1500 Classic, which cover makers list into 2023 or 2024. A Classic uses the same part as a 2009 to 2018 truck. In our data, each new-body RamBox part is for the 5'7" bed, while older trucks have RamBox parts for the 5'7" and, on many covers, the 6'4".
| Bed | Years with parts listed | Body | Good to know |
|---|---|---|---|
| 5'7" | 2009 to 2026 | Both | Crew Cab short bed, also on the TRX |
| 6'4" | 2002 to 2026 | Both | The long bed on the current truck |
| 8' | 1994 to 2018, Classic to 2023 or 2024 | Previous body | Roll-N-Lock calls it 8'2" |
Unsure of your bed? Follow our guide to measuring a truck bed before you order.
How the cover mounts around the bins
Each brand solves the bins differently. Extang, UnderCover and some Retrax parts bolt to the silver cargo rails Ram fits at the factory. BAK's rails push into those factory rails, and owners say that takes real force. LOMAX needs the factory tonneau or utility rails taken off first, while Access makes its RamBox parts for beds that never had factory tonneau rails. The rail note in each part title tells you which case you are in.
LOMAX's maker shows a RamBox install:
One BAKFlip F1 owner with a 2016 Ram Limited sums up the goal:
“Looks great, keeps the bed very dry, and works great with the RamBoxes allowing you to use them without messing with the tonneau.”
BAKFlip F1 owner · 5 out of 5 stars
The F1 is on its way out: BAK marked it discontinued in June 2026 and ships what remains. Pick the MX4 now, or the BAKFlip FiberMax if you want a fiberglass top.
Multifunction tailgate and TRX
If your truck also has the split swing gate offered from 2019, the choice narrows again, since only 14 of the 57 series have a part for it. Extang's e-Series and the RetraxPRO FRC-4000 EZ-OFF RamBox parts are listed for either tailgate, and so are Retrax's 5'7" RetraxPRO MX and PRO XR RamBox parts. The MX4 RamBox part for the 2019 to 2026 truck is listed for either tailgate too; BAK's separate split-gate MX4 part is for trucks without RamBox.
A TRX uses the 5'7" bed and therefore the same new-body part. Its bed bar is the catch: the MX4, Solid Fold ALX and RetraxONE XR RamBox parts and the 5'7" RetraxPRO MX RamBox part are listed as not working with it, so plan to remove the bar or pick another cover.
Best overall: BAKFlip MX4
Best overall
BAKFlip MX4 Hard Folding Tonneau Cover
From $1,199.99 · Hard folding cover with RamBox parts for both Ram bodies.
On a RamBox truck BAK lists the MX4 for the 5'7" bed of both bodies, plus the 6'4" bed on 2012 to 2018 trucks and the Classic. Its panels hold 400 lb, latch as you close them and fold flat against the cab, which frees every inch of bed and keeps the brake light visible. Installation takes about 30 minutes with clamps and no drilling.
A 2020 Ram 1500 Limited owner on the cargo management rails:
“MX4 looks great on my 2020 RAM 1500 limited. easy to install with new slide on rails for cargo management system.”
BAKFlip MX4 owner · 5 out of 5 stars
Pros
- RamBox parts on the 5'7" bed of both bodies
- The whole bed opens up
- Rated 400 lb, with a 5-year warranty
Cons
- No rack rails and no lock of its own
- 15 of the 200 owner reviews on file mention leaks
- RamBox owners describe roughly an inch of space at each tailgate corner, so plan on a tailgate seal
Skip it if you want a rack or a key lock, since the RetraxPRO XR has both. The lower-priced BAKFlip G2 folds the same way, and our BAKFlip G2 vs MX4 comparison explains the difference. For a full verdict, read our BAKFlip MX4 review.
Best under $500: Extang Trifecta e-Series
Best under $500
Extang Trifecta e-Series Soft Folding Tonneau Cover
From $339.99 · Soft folder that clamps on by hand, with a 2019 to 2026 RamBox part.
No other RamBox cover we carry for the Ram 1500 starts lower than the e-Series. Its 2019 to 2026 RamBox part is listed for trucks with or without the split tailgate. A two-layer vinyl tarp sits on an aluminum frame held by tool-free Jaw-Grip clamps, and folding it toward the cab uncovers two thirds of the bed. Extang offers a 5-year limited warranty.
The RamBox part suits the factory silver cargo rails and costs a little more than the From price, yet it stays under $500. The Extang Trifecta 2.0 (4.5 stars from 249 reviews) also has RamBox parts for both bodies, but they land a little over $500. Skip the e-Series if you need a lock (Extang lists none) or prefer a hard top.
Pros
- RamBox part under $400 for either tailgate
- Tool-free Jaw-Grip clamps, installed in under an hour
- 5-year limited warranty
Cons
- No lock
- Opens two thirds of the bed unless removed
Best soft roll-up: Access Lorado
Soft roll-up
Access Lorado Soft Roll-Up Tonneau Cover
From $580.55 · Vinyl roll-up with a RamBox part for trucks without factory tonneau rails.
The Access Lorado has RamBox parts for the 5'7" bed on both bodies, to 2027, listed with or without the split tailgate, plus a 6'4" part for 2012 to 2018 and the Classic. It has a 1 inch profile, AutoLatch, hook-and-loop sides and a 5-year limited warranty. Access RamBox parts are for beds without the factory tonneau rails, so check your bed first. The Access LiteRider (from $489.60) also has RamBox parts and stays under $500 in RamBox form.
Skip a soft roll-up if your bed holds anything you cannot afford to lose. They latch automatically but have no hard shell.
Pros
- 1 inch profile
- RamBox parts back to 2009 and forward to 2027
- 5-year limited warranty
Cons
- Not for beds with factory tonneau rails
- Vinyl, with no hard shell
Best key lock: RetraxPRO MX
Key lock
RetraxPRO MX Retractable Tonneau Cover
From $2,149.99 · Retractable with a key-lockable handle and RamBox parts for both bodies.
Slats of double-wall aluminum slide back into a canister behind the cab and stay wherever you stop them, with no need to drop the tailgate. The closed cover holds up to 500 lb, the TraxLatch handle takes a key and the warranty is limited lifetime. RamBox parts cover the 5'7" bed on both bodies and the 6'4" bed on 2011 to 2018 trucks and the Classic; the 2019 to 2026 5'7" RamBox part is not listed for a TRX with its bed bar.
“Was also limited by the fact that I have the Rambox option on my truck. Only negative is tub is not completely sealed from rain, but decent enough. After a wash, I only noticed water along the sides and very front which will drain easy enough. You also lose a bit of bed depth with the canister, but that is to be expected.”
RetraxPRO MX owner · 5 out of 5 stars
Pros
- Key-lockable TraxLatch handle
- Rated 500 lb, with a limited lifetime warranty
- Stops wherever you leave it, with the tailgate up
Cons
- The canister takes some bed depth
- 18 of the 200 owner reviews on file mention leaks
- The 2019 to 2026 5'7" RamBox part is not listed for the TRX
Skip it if price leads or bed depth matters, since the canister takes space, as that owner says. Drain tubes come up in 19 of 200 Retrax reviews, so read the install steps first. Our Retrax comparison covers the whole range.
Best for racks: RetraxPRO XR
Best for racks
RetraxPRO XR Retractable Tonneau Cover with T-Slot Rails
From $2,299.99 · Retractable with full-length T-slot rails and a 5'7" RamBox part.
The RetraxPRO XR runs T-slot rails along the whole bed for cross bars, racks and cargo holders. The rails sit on top of the cover, so the cover keeps working. It is rated for 500 lb, has a key-lockable handle and a limited lifetime warranty. The RamBox part is for the 5'7" bed on the new body and costs a little more than the From price. The RetraxONE XR (from $1,699.99) costs less and keeps the T-slot rails and RamBox part, but its rating is 200 lb with a 1-year warranty, where the PRO XR offers 500 lb and a limited lifetime warranty.
Skip the XR if you never carry anything on top. Owners rate the XR 4.6 from 271 reviews, and 9 of them mention the install, so plan on a helper.
Pros
- T-slot rails for racks and cross bars
- 500 lb rating and limited lifetime warranty
- Key-lockable handle
Cons
- Costs more than the MX
- The 2019 to 2026 RamBox part costs a little over the From price
Best bed access with locking rails: BAK Revolver X4s
Hard roll-up
BAK Revolver X4s Hard Roll-Up Tonneau Cover
From $1,399.99 · Hard roll-up with RamBox parts for both bodies.
BAK's Revolver X4s winds up on a spool against the bulkhead and frees the entire bed. It is rated for 400 lb, has slam latches and rotational locking rails, and BAK backs it for 5 years. Its RamBox parts cover both bodies.
“Looks great, and after fiddling with different weather stripping, and a little caulk here and there, even in heavy rain, I don't get more than a few drops that trickle down the sides of the bed walls and at the corners of the tailgate.”
BAK Revolver X4s owner · 4 out of 5 stars
Pros
- Rolls up to free the whole bed
- Rated 400 lb, with a 5-year warranty
- RamBox parts for both bodies
Cons
- No key lock of its own
- 18 of the 200 owner reviews on file mention water, mostly at the tailgate corners
That owner has a Ram Limited with RamBox and chose the X4s to keep the full bed. Water comes up in 18 of the 200 reviews on file, mostly drips at the tailgate corners. Most owners call the install easy, though a 2023 Ram owner fought the clamps. Skip it if you want a cover that stands open at the cab like a folder, or a lock of its own.
Best gloss black hard folder: UnderCover Flex
Hard folding
UnderCover Flex Hard Folding Tonneau Cover
From $1,099.99 · Gloss black hard folder with one RamBox part, for the 2019 to 2026 5'7" bed with silver cargo rails.
UnderCover makes one RamBox Flex part, for the 2019 to 2026 5'7" bed with the factory silver cargo rails. Its split-tailgate Flex parts are for trucks without RamBox, and older trucks and the Classic have no RamBox Flex part. Installation uses clamps with no drilling, and the closed panels are rated for 400 lb. Skip it if you want a lock on the cover.
Pros
- Gloss black finish
- 400 lb rating, no drilling
- Folds to two thirds, stands at the cab or lifts off
Cons
- One RamBox part, 2019 to 2026 5'7" only
- Not listed for the split tailgate with RamBox
Best for loads: Extang Solid Fold ALX
Heavy loads
Extang Solid Fold ALX Hard Folding Tonneau Cover
From $1,199.99 · Hard tri-fold rated up to 600 lb, with a 2019 to 2026 RamBox part.
The Extang Solid Fold ALX is rated up to 600 lb and has a RamBox part for the 2019 to 2026 5'7" bed with silver cargo rails, listed for either tailgate. A one-hand rotary release opens it. The LOMAX Hard Tri-Fold (from $1,180.80) is another hard tri-fold with RamBox parts, though they need the factory utility rails removed. Skip both if you want the whole bed open without lifting the cover off.
Pros
- 600 lb rating
- One-hand rotary release
- RamBox part works with either tailgate
Cons
- Two thirds access unless removed
- Not with the TRX bed bar
How to choose a cover for a RamBox truck
Your bed and body decide the part, so settle those first. Then match the type to how you use the truck:
- Daily driver with open-bed gear: a hard folding cover such as the MX4 or Flex.
- Tools and a key lock: a retractable cover, the RetraxPRO MX or XR.
- Budget: a soft folding cover, the Trifecta e-Series.
- Whole bed and a flat top: a hard roll-up, the Revolver X4s.
Water is the common complaint on RamBox trucks. A RamBox owner with a BAK folding cover put it this way:
“The design provides a good seal against normal rain intrusion but not 100% waterproof. Given the complexity of tying into opening Ramboxes, I would not expect the bed to remain completely water free.”
BAKFlip F1 owner · 5 out of 5 stars
Our guides on whether tonneau covers are waterproof and on car washes explain what to expect. The Ram 1500 tonneau cover collection filters to your year, bed and RamBox option.
Price bands for RamBox covers
| Band | RamBox picks |
|---|---|
| Under $500 | Extang Trifecta e-Series ($339.99), Access LiteRider ($489.60) |
| $500 to $1,000 | Access Lorado ($580.55), TruXedo Pro X15 ($599.99) |
| $1,000 to $1,500 | UnderCover Flex ($1,099.99), BAKFlip MX4 ($1,199.99), Extang Solid Fold ALX ($1,199.99), BAK Revolver X4s ($1,399.99) |
| Over $1,500 | RetraxONE XR ($1,699.99), RetraxPRO MX ($2,149.99), RetraxPRO XR ($2,299.99) |
Prices are the From price for any part in the series, so your RamBox part may cost a little more. The wider market for retractable covers is in our best retractable tonneau covers guide and the hard folders are compared in best hard folding tonneau covers.
Frequently asked questions
Does a standard tonneau cover fit a Ram 1500 with RamBox?
Not on most covers. The RamBox bins change the rails, so cover makers sell a RamBox part number. Always pick the RamBox option in the vehicle selector before you order.
Do they make tonneau covers for trucks with RamBox?
Yes. Eight of the nine brands we carry for the Ram 1500 have a RamBox part, all but Pace Edwards. Every pick in this guide has one.
Can I still use the RamBox bins with a cover on?
Yes. RamBox parts are sized to sit between the bins, so the lids open with the cover closed. One owner of BAK's now-discontinued F1 says the bins work without touching the cover.
Do RamBox covers cost more?
Usually a little. RamBox versions run up to about $100 more than the From price on each card, and the Extang Trifecta 2.0 RamBox part is a little over $500.
Will a RamBox cover work with the multifunction tailgate?
Often, yes. The 2019 to 2026 RamBox parts for the BAKFlip MX4, Extang Trifecta e-Series, Extang Solid Fold ALX, Access Lorado and LiteRider, RetraxPRO MX and PRO XR are listed for either tailgate. UnderCover's Flex is the exception: its split-tailgate parts are for trucks without RamBox.
Can I use a rack with a tonneau cover on a RamBox truck?
Yes, with a retractable that has T-slot rails. The RetraxPRO XR and RetraxONE XR both have a RamBox part, and the RetraxPRO XR is rated for 500 lb (the ONE XR for 200 lb).
Does Ram still offer the RamBox?
Yes. RamBox is still an option on the 2026 Ram 1500, and Access and LOMAX already list RamBox parts for 2027 trucks. On a truck built from 2019, every RamBox part we list is for the 5'7" bed.
Which RamBox cover has the best owner ratings?
Among the picks with reviews on file, the RetraxPRO MX (4.6 from 295) and RetraxPRO XR (4.6 from 271) rate highest, with the Extang Solid Fold ALX (4.6 from 90). The BAKFlip MX4 has the most reviews, 4.5 from 328.
Find a cover that fits your Ram 1500