Roll-N-Lock M-Series Review: A Small Canister and Vinyl to Look After

Of the canister retractables we've reviewed, the Roll-N-Lock M-Series leaves the most of your bed alone. RealTruck lists its canister at 7.25 in deep, owners put the bite at 6 to 8 in, and a Retrax canister takes roughly 12 to 13 in. Over that sits a cover of industrial-grade vinyl on aluminum slats, a torsion spring that pulls it into the canister when you twist the latch, and a keyed lock with a flap over the key slot. We'd put one on a short or midsize bed that carries tools, bags and groceries more often than plywood, and we'd budget a little time for looking after the vinyl.

It isn't the cover for a bed that has to stay bone dry, for a rack (that's the M-Series XT, which adds T-slot rails, or a Retrax), or for anyone who plans to move it to the next truck: RealTruck's 3-year warranty excludes water intrusion and ends when the cover leaves the original vehicle. Roll-N-Lock also sells the A-Series in bare aluminum slats and the electric E-Series. We haven't reviewed either, and reports about them don't count here.

What it does well, and what it costs you

Where it earns its place:

• Bed space: the canister is about half the size of a Retrax canister by owner measurements, and the floor underneath it still takes low cargo.
• Security: solid aluminum slats under the vinyl, so a knife won't open it, plus a keyed twist-lock latch and three latching positions for driving with the bed partly open.
• Quiet and tidy: the slats don't drum on the highway, the vinyl looks like a soft cover, and the retracted cover leaves the rear window clear.
• Staying power: named covers have run three and four years, and a vinyl-topped Roll-N-Lock went ten years on a Tacoma.

Where it costs you:

• Water: RealTruck's own install sheet says the cover isn't airtight, and the warranty excludes leaks. Expect a little, and keep the canister's drain tubes clear.
• The vinyl: it wants 303 Protectant, the sun fades the black parts, and ravens tore one open.
• No ratings: RealTruck publishes no load, weight or install time, and its sheet says to put nothing on the cover.
• Strap and latch: you close it with a pull strap, and the latch rides at the rear edge of the cover, which puts it mid-bed when the cover is part open.
• Warranty: 3 years for the original buyer, and it ends if the cover moves to another truck.
• Price: about what a RetraxONE XR costs, and noticeably more than a TruXedo Sentry CT.

Fitment by truck and bed

RealTruck makes M-Series parts by truck and bed, with separate parts on some trucks for RamBox or a factory bed liner, and Amazon lists them the same way. We confirmed every Amazon row in the fitment table on that listing's own product page. On most of these listings the title and the fitment bullet beneath it disagree by a model year, and those rows say so, so check your year against both.

• F-150: the 14th-generation F-150 (Gen14, 2021 on) has 5 ft 7 in and 6 ft 7 in listings, and RealTruck lists the 5 ft 7 in part for the Raptor and the 2022-2026 Lightning too. The Gen13 (2015-2020) has a 5 ft 7 in listing and a 6.5 ft listing that is RealTruck's 6 ft 7 in part. RealTruck says nothing about Ford's BoxLink.
• Silverado and Sierra 1500 (T1XX): 5 ft 10 in, 6 ft 7 in and 8 ft listings, all saying they work with the MultiPro and Multi-Flex tailgates. The short-bed listing isn't for the CarbonPro bed, and we found no M-Series CarbonPro part. Amazon's 5 ft 10 in and 6 ft 7 in are RealTruck's 5 ft 8 in and 6 ft 6 in.
• Ram 1500 (DT): the 5 ft 7 in and 6 ft 4 in listings don't fit the multi-function (split) tailgate. The RamBox listing's Amazon title says it fits with the split tailgate, while RealTruck's own fitment note for that part says without it, so ask RealTruck before you order. For a DT with the split tailgate and no RamBox we found no M-Series part; the Sentry CT has split-tailgate listings.
• Tacoma: the 3rd gen (2016-2023) 5 ft 1 in listing says it's for trucks without the OE track system or the Trail Edition, while RealTruck's note for the same part names only the Trail Special Edition package. If your bed has the factory deck rails, get an answer from RealTruck first. For the 4th gen (2024 on), RealTruck lists a 5 ft part and a 6 ft 2 in part and says both need the factory deck rail system; we haven't confirmed either on Amazon, so check fit for your truck with the search link in the picks.
• Tundra (3rd gen, 2022 on): 5 ft 7 in listings for the Crew Cab and Double Cab. RealTruck splits the part by the factory bed liner, LG575M without it and LG580M with it.
• Maverick: one standard listing, which calls the bed 4 ft 6 in where RealTruck says 4 ft 4 in. Same part.
• Ranger and Colorado/Canyon: RealTruck lists a 2024-2025 Ranger 5 ft 1 in part and a 2023-2026 Colorado and Canyon 5 ft 2 in part for trucks without the Multistow tailgate. Neither is confirmed on Amazon; check fit for your truck with the search links.

The M-Series XT rows in the table are the same cover with two T-slot rails added, and the XT costs more on every matching listing. If a rack isn't in the plan, buy the standard cover.

Canister, rails and the numbers RealTruck publishes

RealTruck publishes less than most makers. There's no cover weight, no rated load and no install time. Here's what it does publish for the M-Series, next to the two Retraxes and the hard roll-up it gets shopped against:

All four clamp on with no drilling for the cover itself on most trucks, per RealTruck. The M-Series is the only one without a load figure, and RealTruck's install sheet fills the gap with a list of don'ts: no objects on or against the cover, no cargo tied to its framework, nothing on top while you drive. Treat it as a lid, not a shelf. That goes for the XT too. RealTruck sells its two T-slot rails for Yakima, Thule and Rhino-Rack accessories on cross rails bought separately, and publishes no load limit for them. Before a rack, a cargo box or a tent goes on, get the limit in writing from RealTruck and the rack maker.

The canister is the reason to buy this cover, so here's what it buys you. RealTruck's 7.25 in figure doesn't say which way it's measured, and another block on the same page says 8 in, so go by the owners: they put the canister's bite at 6 to 8 in, where a RetraxPRO XR's runs 12 to 13 in. If the M-Series takes 8 in off the front of a Maverick's 54.4 in bed, you keep about 46 in of full-height floor, against about 41 in behind a 13 in canister. On a Gen14 F-150's 67.1 in short bed it's about 59 in against 54. That's about 5 in more floor on either truck, and on a bed this short you'll use it. Under the canister on a DT Ram there's about 13 3/4 in of height over a rubber bed mat, enough for low totes and tie-down straps.

Check your front tie-downs before you order. On a Maverick they stay reachable around the canister. RealTruck's install sheet for the 2005-2023 Tacoma has you remove and discard both front tie-downs, and on a 2nd gen Tacoma, wanting the bed cleats back was one reason an owner chose a different cover for the next truck.

Water, drains and winter

RealTruck doesn't pretend this cover is waterproof. Its install sheet calls it not airtight, and its warranty excludes leaks from normal use. Owners who name the M-Series lean drier than that sounds: a Maverick came through several strong rainstorms with very little water inside, and a Ram's M-Series XT came out of a car wash with a dry bed. When water does get in, it can be very little: a golf bag that rides in one bed through a lot of rain has never come out wet. We'd trust it with luggage, groceries and tools in totes, not with drywall or anything in a cardboard box.

When water gets in, look at the cab end first. On one cover, quite a bit came in around the bulkhead after the install, and Roll-N-Lock sent a long rubber gasket that fastens along the cover's bulkhead edge. If your bed is wet at the front after rain, ask RealTruck about that gasket before you start adding foam. Torn vinyl is the other path: the ravens that pecked one cover down to bare aluminum left it leakier in the rain.

The drains decide how the canister lives. Water that gets past the vinyl runs down drain channels into the canister and out two tubes, and if leaves, pine straw or grit block those tubes, the canister holds water. RealTruck's care sheet says to check the housing for debris; with the cover closed and latched, two screws release the lid, and RealTruck warns never to let the cover retract while the lid is off. Do it every season if you park under trees, and blow the tubes out if they drain slowly.

Winter is where a full canister bites. A Roll-N-Lock sales executive warned owners years ago that a heated car wash followed by subzero air, before the housing drains, can freeze the roll inside it. Freeze-ups after winter washes are the best-known Roll-N-Lock complaint, though the owners who describe them don't say which series, so we can't pin them on the M-Series. Keep the drains clear, let the truck sit somewhere warm after a wash, and brush snow and ice off before you open the cover, which RealTruck's sheet makes a warranty condition. The key slot cover keeps weather out of the lock. Skip the old fixes that spray wax into the tracks, and the rust-proofing spray a Roll-N-Lock executive once suggested. RealTruck's current sheet says any lubricant in the tracks voids the warranty and wears the gaskets; for a sticky cover, it says to wipe the top gasket with 303 on a rag. The warranty also excludes temperatures below -30°F.

We've left the leak-risk gauge empty. Five water reports from owners who name the cover are too few to set it, and only one of them describes more than a little water.

The vinyl top and how it ages

The vinyl is the M-Series' signature and its chore. RealTruck ships a bottle of 303 Aerospace Protectant with the cover and says to clean it with mild soap only, never with silicone or petroleum conditioners. Owners who keep up with it get years out of the top, and the aluminum underneath does the security work.

• Sun: the vinyl holds up better than the black plastic. After four years on a 2010 Tacoma the vinyl was fine, but the black canister had faded and the rubber inside had shrunk enough that the end caps popped off; Roll-N-Lock replaced them free. RealTruck's warranty excludes fading from sunlight.
• Birds: rare, but ravens tore the vinyl and foam off one cover down to the aluminum within weeks of purchase. If ravens or other birds work over your parking spot, a bare aluminum cover is the safer pick.
• Heat: the vinyl stays cooler to the touch in summer sun than bare aluminum slats, by the account of an owner who has run both Roll-N-Lock styles.
• Noise: quiet. You don't hear the slats while driving, and even with the rear window open they aren't loud.
• The spring and tracks: the torsion spring should pull the cover into the canister on its own once the latch is turned, sometimes after a slight push. RealTruck's first fix for a cover that crawls is wiping the track gaskets with 303. One that won't retract after the install may have its rails tightened out of order or a track knocked out of line, and re-setting the rails fixes both.
• Arrival: inspect it the day it comes. Housings have arrived dented, one buyer needed three shipments to get a usable cover, and a Ram's XT arrived two bolts short, with replacements shipped quickly.

The long records are good and mostly old. Named covers have run three trouble-free years on a 2018 F-150 and on a Maverick and four on a 2010 Tacoma, faded canister and all, and a vinyl-topped Roll-N-Lock on an earlier Tacoma lasted ten years with conditioning every other year. Those are older covers, so they speak for the design more than for this year's hardware.

Against the Retrax pair and the Sentry CT

• Versus the RetraxPRO XR: aluminum slats with full-length T-slot rails, a 500 lb evenly distributed rating, a latch that locks anywhere along the track and a limited lifetime warranty. It costs noticeably more on every matching listing, and its canister takes noticeably more of the bed. Buy the PRO XR if a rack rides on the cover. Buy the M-Series if bed space matters more than rails.
• Versus the RetraxONE XR: priced the same as the M-Series on seven of nine matching listings. It has T-slot rails as standard and a latch that locks anywhere, but a one-piece polycarbonate cover rated 200 lb evenly distributed, a 1-year warranty and the bigger canister, and every owner reporting on water gets some. Unless you need the rails, we'd take the M-Series.
• Versus the TruXedo Sentry CT: aluminum slats under a canvas top that roll to the cab, so there's no canister at all, and most versions lift out without tools. It's rated 400 lb evenly distributed with a 5-year warranty, costs noticeably less on every matching listing, and its owners report a drier bed. If a drier bed and a lower price matter more to you than a spring-loaded cover that rolls itself away, buy the CT.
• Versus Roll-N-Lock's A-Series: the same canister and warranty with bare aluminum slats instead of vinyl. We haven't reviewed it, so we can't tell you how it holds up.

Install notes from the sheets

RealTruck's install sheet for your truck governs, and the same sheet covers the standard and XT tracks. The cover clamps to the bed rails, but the job still involves a drill on most trucks. The F-150 sheet calls for a jig saw, a 1/2 in drill bit, a drill, a Phillips screwdriver, a 7/16 in wrench, a tape measure and a utility knife; the Allen wrench and the 303 come in the box.

• Drop-in liners: on the F-150, Ram and Maverick sheets, a plastic drop-in liner comes out, gets cut with a jig saw and drilled with five 1/2 in holes, then goes back in. Spray-in beds skip the step.
• Drain tubes: on the F-150 you drill a 1/2 in hole through the plug at the bulkhead, and the Silverado and Sierra, Tacoma and Tundra sheets also have you drill 1/2 in holes for the tubes; RealTruck warns not to drill through the cab and to rust-protect the holes. The DT Ram and the Maverick use existing holes. Run the tubes down toward the ground, never toward the cab vents.
• Getting it square: the tracks have to sit at the spacing the sheet gives, checked with the notches in the cargo shield, square to the tailgate with a 1/8 in gap at the end caps, with shims where needed. Tighten everything loosely first, then in the sheet's order. The sheet also gives torque values; use a calibrated torque wrench as it asks, and don't overtighten the bed clamps.
• Afterward: RealTruck says to recheck the clamps after a week of driving and periodically after that. Mark where the track ends meet the canister before you ever pull the cover, and it goes back together much faster.

Owners install it alone, and the job is fussier than the pictures suggest. The written steps are thin, and RealTruck's install videos fill the gaps. On a Maverick, getting the bed clamps to bite takes patience, and one owner had the brackets shortened 1/4 in at a machine shop. On an older Tacoma, the shims behind the track brackets had to come out before the tailgate would close properly. RealTruck publishes no install time.

Buy it, or keep shopping?

Buy the Roll-N-Lock M-Series if you want a locking hard retractable and every inch at the front of a short or midsize bed counts. It gives back more floor than either Retrax, the slats under the vinyl make it a real lock box, and named covers have run three and four years. Keep the drain tubes clear, feed the vinyl 303, and lock the tailgate separately. RealTruck still advertises a built-in tailgate locking system, but its current install sheets bolt a piece to the tailgate only on the 2005-2015 Tacoma (and never with the XT). On the trucks in our fitment table the cover latches into its own tracks, and an M-Series XT owner on a Ram uses the truck's own tailgate lock.

Keep shopping if the bed must stay dry, if a rack goes on the cover, or if you'll move the cover to another truck. The Sentry CT is cheaper and drier with no canister at all, the RetraxPRO XR carries a rack on the cover's own rails, and the RetraxONE XR gets you rails for about the same money.