Access LOMAX Review: Our Pick of the Removable Hard Tri-Folds

The LOMAX is the hard tri-fold we'd buy if you take the cover off more often than you need to fold it. Agri-Cover, the North Dakota company behind the Access roll-ups, builds three aluminum panels that sit less than half an inch above the bed, latch themselves shut and lift off the truck in about a minute with no tools. It needs no drain tubes. Agri-Cover rates it at 400 lb evenly distributed and backs it for 3 years. It has a long owner record, with covers going four and seven years, and on that record bad leaks are rare.

Two things keep it from being an easy yes. It never opens the whole bed with the cover on: the rear panels fold onto the front one, so for anything that needs the front third you lift the cover off. And most beds take on a little water, usually a few drops at the tailgate in a car wash or a downpour. If you need a bone-dry bed, plan on extra seal strip. WeatherTech sells a look-alike, the AlloyCover, and the installation manual linked from WeatherTech's own F-150 page is Agri-Cover's LOMAX manual, so owners who call the AlloyCover a rebadged LOMAX have a point. This review is about the LOMAX itself, as Agri-Cover sells it.

Where it wins and where it loses

It wins on:

• Removal: unclip the two safety straps, pull the tab on the front panel, slide the cover back and lift. Putting it back is the same steps in reverse, because the rails never leave the bed.
• Height: the side rails sit on top of the bed rails, so you keep the full depth of the bed, and on a Tacoma the factory deck rails stay where they are, though Agri-Cover warns the brackets can limit some of their use.
• No plumbing: Agri-Cover's design routes water across waterproof hinges and a continuous side seal, with no gutters and no drain tubes to clog or pop off.
• Staying power: covers on Rams, Tundras, Tacomas and a Maverick have run three to seven years, and two owners have put one on a second truck.

It loses on:

• Bed access: the stack covers the front third of the bed. Reaching gear stored against the bulkhead means climbing in or pulling the cover.
• A little water: most owners see some at the tailgate end or the front corners. The fixes are cheap, but you'll probably need one.
• Aging parts: on four-year-old covers, rubber seals have worn out and the latch area has started to separate from the top panel. The warranty runs 3 years.
• Buying it on Amazon: the LOMAX is sold there by third-party sellers, the listings are thin, and three of the nine we confirmed carry a floor mat's bullet points under a LOMAX title.

Fit by truck, listing by listing

Agri-Cover builds a LOMAX for each truck and bed, and its own fit guide says the covers don't transfer between truck models. Amazon sells them one listing per fitment, often with nothing but a part number in the title. We confirmed each Amazon row in the fitment table on that listing's own data, with the years and bed exactly as the listing states them, and we left out every listing that didn't name its bed. Where Agri-Cover sells a cover we couldn't confirm on Amazon, the row is a search link: check fit for your truck.

• F-150: a 6 ft 6 in listing whose fitment line reads 2004 on, carrying the part number Agri-Cover lists for both the 13th-generation F-150 (Gen13) and the 14th generation (Gen14), and a 5 ft 6 in listing titled 2015-2020 for the Gen13. That short-bed listing's part number is also the one Agri-Cover lists for 2021 on, but with the title saying 2015-2020, a Gen14 short-bed owner should confirm with the seller.
• Ram 1500 (DT): no Amazon listing we could confirm. Agri-Cover lists the 5 ft 7 in bed with and without RamBox, a separate RamBox version for trucks with the multifunction (split) tailgate, and the 6 ft 4 in bed without RamBox. Its RamBox sheet removes the factory tonneau rail and mounts the cover's rails on brackets. The one Amazon listing for a RamBox bed with LOMAX in its title carries a LOMAX Stance part number, which is a different cover, so all the Ram rows are search links.
• Tacoma: a 3rd gen (2016-2023) 6 ft listing for trucks with the deck rails and without the factory hard cover, and a 4th gen (2024 on) 6 ft listing that Agri-Cover offers with or without the deck rails. Agri-Cover sells separate covers and install sheets for the two generations, so a used 3rd gen cover isn't a 4th gen fit. The 5 ft beds are search links.
• Tundra (3rd gen): 5 ft 6 in and 6 ft 6 in listings. Agri-Cover sells each bed with and without the deck rails, and neither listing says which it is. The 5 ft 6 in listing's part number is the one Agri-Cover gives its deck-rail version; the 6 ft 6 in listing's isn't in Agri-Cover's selector, so ask the seller before you order.
• Ranger, Maverick and Colorado/Canyon: a 2024-2025 Ranger 5 ft listing (Agri-Cover sells a separate 2026-2027 cover), a 2022-2026 Maverick listing and a 2023-2026 Colorado and Canyon listing. The last two name no bed, but Agri-Cover lists one bed for each truck.
• Silverado and Sierra 1500 (T1XX): no Amazon listing we could confirm. Agri-Cover lists 5 ft 8 in and 6 ft 6 in covers in versions with and without the Multi-Pro tailgate, and CarbonPro versions whose install sheet drills six small holes through the bed cap. Order through Agri-Cover's selector or a dealer.

A few fit details matter more than the listing title. On a 3rd gen Tacoma, slide your tie-down cleats into the deck rail channel before the brackets go on, which Agri-Cover's sheet has you do; adding them later means pulling brackets. On a DT Ram, the tailgate leaves a small gap at the top corners that no low-profile cover fully closes. Agri-Cover's fit guide also says the LOMAX won't work with an over-the-rail toolbox, and that most liners are fine. Its manual says an under-rail drop-in liner needs a little trimming at the front corners and by the tailgate, and an over-rail drop-in needs a lot.

On paper: load, weight and warranty

Here's the LOMAX against the three hard folders on Amazon it's most often weighed against, from each maker's own pages:

Agri-Cover puts the weight at about 40 to 50 lb on its LOMAX page and about 50 lb on its store page. Either way, it's light enough for one person to lift off, and the low weight is a big part of why owners pull it so often. The 400 lb rating is evenly distributed, and Agri-Cover's own manual says to place nothing on or against the cover and never to stand, sit or ride on it. Read the number as panel strength for snow and the odd bump, not as a shelf.

Folded, the LOMAX gives up more of the bed than a cover that stands against the cab. Agri-Cover doesn't publish panel lengths. On a Gen14 F-150 short bed, which BAK and UnderCover list at 67.1 in, three panels of about equal length would stack over roughly the first 22 in and leave about 45 in open. Your rear window stays clear and you can drive with the stack clipped down, but a load taller than the stack that needs the front of the bed means lifting the cover off.

Finishes vary by listing. Agri-Cover's current selector offers urethane aluminum (sold as black urethane), urethane diamond plate, carbon fiber and FRP; older listings still sell a matte black that the selector no longer shows. The panels are aluminum, not foam core. Agri-Cover, based in Jamestown, North Dakota, launched the LOMAX in 2016 and doesn't say where each line is built.

The warranty is short and narrow. Agri-Cover covers defects in workmanship for 3 years from the date you receive the cover or the date it was made, on the truck model it was built for, and it repairs or replaces defective parts only, with no labor. Accident, misuse, alteration, improper installation and ordinary wear and tear are excluded. Keep the serial number, on a decal under the rear panel on the driver's side.

Water: the tailgate end, then the corners

Expect a mostly dry bed and a few drops at the tailgate. That's the typical LOMAX report, and it's why we rate leak risk moderate rather than low. Bad leaks are rare. Agri-Cover calls the seal weathertight; its own manual is more careful and says the cover doesn't keep moisture and dust out of the bed entirely.

Water finds the tailgate end first, in hard rain or when a car wash or pressure washer hits the back of the truck. The front corners at the bulkhead come next, where the bed cap leaves gaps the front seal doesn't always reach. On a DT Ram, light shows through at the top corners of the tailgate because of how the gate meets the bed sides, and one owner who added weather stripping there got little help from it. On a 3rd gen Tacoma, the header rail leaves a gap on each side worth sealing.

Most of the fixes are setup. Agri-Cover's troubleshooting table blames a gap or a side seal that won't close on rails set too high or out of level, and owners who loosened the rail brackets and pulled the rails down a notch got a tighter seal. Use the black sealant in the box on the bed cap corners, factory holes and stake pockets, as the manual asks, set the front seal with its tall side toward the cab, and leave the cover closed for 48 hours after install so it settles. If the cab end won't seal, ask Agri-Cover for help: a Colorado owner who asked got a bulkhead gasket free and now carries a car seat in the bed without it getting wet.

Plan a few dollars of extra seal anyway. Owners who added a tailgate seal and a strip of foam at the front corners report a dry bed through downpours, car washes and Denver snow. The two real leaks we know of were different stories: a DT Ram cover that arrived damaged leaked from the cab side no matter how low its owner set the rails, and on a 2019 Tacoma water ran in at the curve of the bed sides near the tailgate, possibly because the weather strip sat too low.

What wears out, and when

The LOMAX holds up well, with covers on record at four years on Rams and Tacomas and seven on a Ram 1500. The textured finish shrugs off acorns, twigs and a shop broom pushing snow, and one Tacoma's cover came through a hailstorm with a few slight dents. The weak spots show up around year three or four.

• Seals: on a 2019 Tacoma every rubber seal had deteriorated at four years, and Agri-Cover told its owner the seals between the panels can't be replaced. Agri-Cover does publish replacement instructions for the edge, front and rear seals and a hinge gap kit, so ask what's available for your cover before you assume the worst.
• The latch area: on a four-year-old cover, both sides near the pull-cord latch began separating from the top panel when the glue gave out. It still worked. Check that spot when you clean the cover.
• Finish: one six-year cover began streaking after three years, and Agri-Cover's answer was a discount on a new one. Wash it with mild soap and water, never petroleum or citrus cleaners, and use Agri-Cover's Cover Care protectant now and then.
• Panels: they're thin aluminum on a frame, light enough to lift with one hand and a little wobbly while you do. One DT Ram cover arrived damaged and felt flimsy to its owner.
• Hinges and storage: brush snow and grit off the hinges before you fold or unfold it, don't drop or slam the panels, and don't leave the cover folded for long stretches, as the manual warns.

Security is the tailgate's job. The latches lock automatically when you close the cover and release from a cord you reach with the tailgate down, so a locked tailgate makes a locked bed. There's no keyed lock on the cover itself, and like any folder it gives way to a pry bar. Agri-Cover's manual also says never to let people or animals ride in the box with the cover closed.

LOMAX or a BAKFlip, Ultra Flex or Gator

• Versus the BAKFlip MX4: the MX4 folds against the cab so you get the full bed with the cover on, and BAK backs it for 5 years. In exchange it needs drain tubes, moves a 3rd gen Tacoma's factory rails lower, and draws more leak complaints; a Sierra owner who swapped an MX4 for a LOMAX found it more water resistant right away. It also cost more on all four beds where we confirmed both. Buy the MX4 if you need the full bed often; buy the LOMAX if you'd rather lift the cover off now and then and keep the bed drier.
• Versus the UnderCover Ultra Flex: the same 400 lb evenly distributed rating with a 5-year warranty, and its stack stands upright on prop rods off the cab, so the whole bed opens with the cover on. It cost more than the LOMAX on five of the seven beds where we confirmed both. Pick it for frequent full-bed use.
• Versus the Gator EFX: the budget take on the LOMAX layout: the rear two-thirds folds and the cover comes off without tools. Gator rates it 300 lb and backs it for 2 years, and it costs far less on every bed where we confirmed both, but fewer of its owners report a fully dry bed.
• Versus the WeatherTech AlloyCover: the WeatherTech cover described above, sold direct with a 3-year warranty. Shop both if you're near a WeatherTech store. The LOMAX has by far the longer owner record and fewer bad leaks in it, which is why it rates a little better on sealing here. It also sells through dealers and Amazon.

Not every owner prefers it. A Tacoma owner whose friend runs an MX4 thinks the BAKFlip has the nicer fit and finish and would have bought it for the full-bed fold, and a Sierra owner a year and a half in would pick a hard roll-up next time because it opens more easily and gets further out of the way. Both are fair: if your bed's front third matters every day, a cover that clears it does too.

The LOMAX works with stake-pocket bed racks, per Agri-Cover, which sells it as a combo with its ADARAC Pro Series rack. One DT Ram owner runs ladder racks over the cover and still uses it open, folded or closed underneath.

Getting the rails right

You need a wrench and, ideally, a helper to hold the front of each rail while you clamp it. Owners report 30 minutes to a little over an hour. The steps that decide whether it seals:

• Rails: set each side rail with its weather strip against the inside lip of the bed and the rail guide on top of the bed rail, pushed forward to touch the front of the bed. Clamp at four points per side, front, one-third, two-thirds and rear, and make sure the clamp teeth engage the rail grooves. The rail has to sit level; trucks with power tailgates usually need it a little higher.
• Seals: clean the bulkhead with alcohol, seal the bed cap corners with the included sealant, and lay the front seal with the tall side toward the cab. Do it above 60 F so the adhesive sticks.
• Cover: set the folded cover on the rails, slide the hooks under the front catches, lower it into the brackets and clip the safety straps on. Agri-Cover says skipping the straps can cause severe damage and voids the warranty.
• Torque: the manual and the special sheets give torque values for the clamps and brackets; follow the sheet for your truck, since over-tightening can damage parts.

Several trucks have their own sheets. The 3rd gen Tacoma, RamBox and deck-rail Tundra versions mount the rails to the factory rail systems, the 2024-on Tacoma bolts them into the factory bed bolt locations, the 2024-on Ranger uses special clamps, and the GM CarbonPro bed's sheet drills six small holes through the bed cap. Agri-Cover warns that on the Toyotas the cover may disable or limit use of some deck rail systems. Find the weather strip before you start: owners have found it tucked between the folded panels, and one had to ask the seller for a missing roll.

Buy it, or pick another folder

Buy the Access LOMAX if you want a low, light aluminum tri-fold that locks with your tailgate, needs no drain tubes, and comes off in about a minute when you need the whole bed. It suits a midsize or half-ton truck that hauls tall loads now and then, and its long owner record backs it up. Set the rails level, seal the corners, and expect a few drops at the tailgate.

Pick something else if you need the full bed with the cover on every week, if nothing in the bed can get damp, or if you want more than 3 years of warranty. The MX4 and the Ultra Flex open the full bed with the cover on and carry 5-year warranties, and the Gator EFX does the LOMAX's job for far less.