BAKFlip MX4 Tonneau Cover for Ram 1500
Our BAKFlip MX4 for the Ram 1500 delivers the durability and weather protection your truck deserves. This hard folding tonneau cover features heavy-duty aluminum panels with a scratch-resistant matte finish, engineered to handle snow loads up to 400 lbs per square foot when evenly distributed.
We designed the MX4 to fold completely open against the cab, giving you full bed access when you need it. The dual-action tailgate seal keeps water and dust out, while the patented automatic drain tube system channels moisture away from the bed. Installation takes about an hour with basic hand tools — no drilling required on most Ram 1500 models from 2009 to present.
What makes this cover ideal for your Ram
Materials and construction
We build every MX4 panel from heavy-gauge aluminum, then coat it with FRP — a composite layer that resists impacts, UV rays, and temperature extremes. The matte finish stays consistent across all weather conditions; we’ve tested it in Arizona summers and Minnesota winters without chalking or cracking.
The hinge system uses industrial-grade stainless steel pivot pins, and each panel locks independently. You’ll find the same rugged engineering in our BAKFlip MX4 lineup across other truck platforms — the Ram 1500 version shares the core construction and warranty. The rails clamp directly to the bed without penetrating the paint, so installation and removal leave no permanent marks.
How the folding mechanism works
The four-panel design lets you configure bed access exactly how you need it. Fold the first panel up at 90 degrees to haul taller cargo near the tailgate. Fold all four panels flat against the cab for ladders, lumber, or motorcycles.
Each panel stays in place once positioned — the hinge tension is calibrated so panels won’t slam shut or blow open on the highway. We’ve rated the closed cover for 400 lbs per square foot when snow or cargo weight is distributed evenly across the surface. Concentrated loads should always be secured directly to the bed, not resting on the cover alone.
Weather sealing and drainage
Dual-action tailgate seal
The MX4 uses a two-stage rubber seal at the tailgate — one strip along the bottom edge of the last panel, and a secondary compression gasket that engages when the tailgate closes. This creates a weathertight barrier even during heavy rain or truck washes.
Automatic drain tubes
Moisture that does reach the rail channels is routed through molded drain tubes at each corner. These exit behind the bed rail, so water never pools inside the bed. The system works passively — no moving parts to maintain.
Other BAKFlip MX4 truck bed covers
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Common questions about the MX4 for Ram 1500
Yes. We offer the MX4 for 2024 Ram 1500 trucks in all three bed lengths: 5 foot 7 inches, 6 foot 4 inches, and 8 feet. The clamp-on installation works with the factory bed rail design on current-generation Ram 1500s without modifications.
When you order, select your truck’s year and bed length so we ship the correct rail kit. The 2024 models use the same bed dimensions as 2019-2023 trucks, so the fit is identical.
Yes, the MX4 works with spray-in bed liners and most drop-in liners. The side rails clamp onto the bed rail itself, not the liner, so compatibility depends on whether your liner covers the top rail surface.
Spray-in liners like LINE-X or Rhino never interfere. Drop-in liners that cap over the bed rail may need to be trimmed slightly at the clamp points. Bed mats that sit flat in the bed work fine — they don’t affect the cover at all.
The MX4 sits approximately 1 inch above the bed rail when closed. This means you lose about 1 inch of vertical cargo space compared to an open bed.
Most Ram 1500 beds measure around 21 inches deep from the rail to the bed floor, so you’ll have roughly 20 inches of usable height with the cover closed. If you need to haul taller items, fold the front panels open and they’ll rest against the cab without blocking your view.
Yes. The rail clamps attach to the top edge of the bed rail, so spray-in bedliners don’t interfere. Stake pocket covers — whether factory plastic caps or aftermarket flush-mount plugs — also won’t conflict with the MX4 installation.
The clamps position between the stake pockets, not over them. You can leave your pocket covers in place during installation and use them normally after the cover is mounted.
Absolutely. Each of the four panels locks independently, so you can fold just the first panel upright at 90 degrees to create a cargo stop near the tailgate. This configuration is perfect for hauling plywood, appliances, or other tall items that need to lean against a vertical surface.
You can also fold two panels open for medium-height loads, or fold all four flat against the cab for maximum clearance. The panels stay in position once you set them — they won’t blow back down while driving.
Yes. Every BAKFlip MX4 for the Ram 1500 includes our limited lifetime warranty covering defects in materials and workmanship. The finish is covered for three years against fading, cracking, and peeling under normal use.
The warranty applies as long as you own the truck. If you sell the Ram with the cover installed, the warranty does not transfer to the new owner. Damage from accidents, improper installation, or concentrated loads beyond the rated capacity is not covered.
Clean the panels every few weeks with car wash soap and water. Avoid abrasive cleaners or brushes that can dull the matte finish. We recommend applying a UV protectant spray twice a year to keep the FRP coating looking new.
Inspect the rubber seals every few months for debris or cracks. Wipe them down with a damp cloth and apply a silicone-based seal conditioner once a year. Check the drain tubes at the rail corners to make sure they’re clear — a quick rinse with a garden hose keeps them flowing.
Lubricate the hinge pins annually with a light spray lubricant. This keeps the panels folding smoothly and prevents squeaking. The clamps should stay tight, but check them once a season and re-tighten if needed.