--- product_id: 54888377 title: "BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448331 | Fits 2017-2026 Ford F-250/350 Super Duty 8' 2\" Bed (98.1\")" brand: "realtruck" price: "$4379.85" currency: USD in_stock: true reviews_count: 9 category: "Real Truck" url: https://www.desertcart.us/products/54888377-bak-bakflip-mx4-hard-folding-truck-bed-tonneau-cover-448331 store_origin: US region: United States of America --- # Advanced weatherproof seals & clamps Patented auto-latch locking system 22% stronger aluminum alloy build BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448331 | Fits 2017-2026 Ford F-250/350 Super Duty 8' 2" Bed (98.1") **Brand:** realtruck **Price:** $4379.85 **Availability:** ✅ In Stock ## Summary > 🚛 Lock it down, weather it out, and own the road with BAKFlip MX4. ## Quick Answers - **What is this?** BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448331 | Fits 2017-2026 Ford F-250/350 Super Duty 8' 2" Bed (98.1") by realtruck - **How much does it cost?** $4379.85 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/54888377-bak-bakflip-mx4-hard-folding-truck-bed-tonneau-cover-448331) ## Best For - realtruck enthusiasts ## Why This Product - Trusted realtruck brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built for Extremes:** Tested from -40℉ to 180℉ and 0-95% humidity, backed by a 5-year warranty for peace of mind. - • **Unmatched Security:** Patented auto-latching locks keep your gear theft-proof without extra effort. - • **Seamless Bed Access:** Fold the cover flush to the cab for 100% bed access anytime—parked or on the move. - • **Weatherproof Warrior:** State-of-the-art EPDM seals and tight clamps block out rain, snow, and dust—no compromises. - • **Effortless Installation:** Click-in rail system cuts install time by 12%, so you’re ready to roll faster. ## Overview The BAKFlip MX4 Gen 3 is a premium hard folding tonneau cover designed specifically for 2017-2026 Ford F-250/350 Super Duty 8' 2" beds. Featuring a reinforced aluminum alloy construction with a 22% strength boost, patented auto-latching locks for enhanced security, and advanced weatherproof seals, it delivers unmatched durability and protection. Tested in extreme climates and backed by a 5-year warranty, it offers full bed access with a sleek, low-profile design and faster installation via a click-in rail system. ## Description America’s best-selling truck bed cover just got even better.Introducing the BAKFlip MX4 Gen 3—the latest evolution of RealTruck’s most popular tonneau cover. Now better than ever, the BAK has redesigned the for improved strength, security, and all-weather performance. The Gen 3 MX4 features alloy-based construction, including heavy-duty aluminum side rails and top panels, reinforced with high-density polymer cores. This updated design delivers a 22 percent increase in strength over the previous generation, making it even more capable of handling daily use, heavy loads, and harsh environments. Security has also been upgraded. BAK’s patented auto-latching system secures the cover automatically when closed. Newly engineered lock components provide added resistance to tampering and forced entry, allowing you to transport your gear with confidence. In rough weather, the Gen 3 MX4 holds strong. Revised EPDM perimeter seals and tight-fit clamps offer the best seal yet, helping prevent water intrusion along the bed rails. A longer dual-action tailgate seal weatherproofs the tailgate while preserving full functionality, whether the cover is open or closed. While the MX4 is built tough, it doesn’t compromise on looks. The flush-mount design gives it a sleek, low-profile appearance, while a textured matte-black finish across all surfaces delivers a clean, subtle aesthetic. Installation is easier than ever with a new click-in rail system that cuts install time by up to 12 percent. Day-to-day use is just as simple—drop the tailgate, unlatch, and fold the cover forward. For complete bed access, fold the cover against the cab without blocking your third brake light. The BAKFlip MX4 Gen 3 is proudly assembled in Missouri using globally sourced materials and backed by a 5-year warranty. Review: Great Product - Very happy with product. Looks great. Easy installation - although watching/pausing/rewinding you-tube video vs reading a document was cumbersome. Seemed a little pricey but I feel like it is worth it after a few weeks. Review: Ford F-450 Platinum, near perfect fit, worth $$$ - Excellent product, near perfect fit. - All hardware is well engineered and sturdy. - Flush fit, looks great. - Top is very strong. - No documentation regarding the 8’ bed rail connectors, closeup and printed insert in package would be helpful - A closeup of the clip in rail insert geometry closeup, printed insert in package would be would helpful. I’d give 4stars but the dam thing is so cool, it works fantastic with my Ford F-450 Platinum. *** It’s worth the BIG $$$ THANKS. ## Features - Fits 2017 - 2026 Ford F-250/350 Super Duty 8' 2" Bed (98.1") - THE BEST-SELLING TRUCK BED COVER IN THE WORLD JUST GOT BETTER - NOW EVEN MORE SECURE THAN GEN 2 | The new BAKFlip MX4 comes with an updated design tested to keep your gear on theft-resistant lockdown with a patented and upgraded auto-latch locking system. - FITS TIGHTER TO KEEP WATER OUT | Improved seals and all-new tight-fit clamps provide state-of-the-art weather protection. - PROVEN FOR EXTREMES FROM ALASKA TO FLORIDA | Tested in the harshest conditions—from -40 to 180℉ and zero to 95% humidity—and guaranteed by a 5-year warranty. - NO WASTED BED SPACE, PARKED OR DRIVING | 100% bed access. All the time. Simply fold to the cab, easily secure, and safely drive with the cover fully open. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06XHWT8SN | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #22,297 in Automotive ( See Top 100 in Automotive ) #61 in Truck Tonneau Covers | | Brand | RealTruck | | Brand Name | RealTruck | | Customer Reviews | 4.2 out of 5 stars 666 Reviews | | Exterior Finish | Aluminum | | Global Trade Identification Number | 00819275042390 | | Included Components | Applicable Hardware, Installation Guide, Tonneau Cover | | Item Type Name | BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448331 | fits 2017-19 Ford Super Duty 8' bed | | Item Weight | 71 Pounds | | Lock Type | Tailgate | | Manufacturer | Bak | | Manufacturer Part Number | 448331 | | Manufacturer Warranty Description | Extended 5 Year Warranty | | Material | Aluminum | | Material Type | Aluminum | | Model Number | 448331 | | OEM Equivalent Part Number | 448331 | | Style | BAKFlip MX4 | | Style Name | BAKFlip MX4 | | UPC | 819275031141 819275042390 605994513866 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** RealTruck - **Style:** BAKFlip MX4 - **Exterior Finish:** Aluminum - **Material:** Aluminum - **Lock Type:** Key, Tailgate ## Images ![BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448331 | Fits 2017-2026 Ford F-250/350 Super Duty 8' 2" Bed (98.1") - Image 1](https://m.media-amazon.com/images/I/61afQPOX48L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Product *by J***N on April 2, 2026* Very happy with product. Looks great. Easy installation - although watching/pausing/rewinding you-tube video vs reading a document was cumbersome. Seemed a little pricey but I feel like it is worth it after a few weeks. ### ⭐⭐⭐⭐⭐ Ford F-450 Platinum, near perfect fit, worth $$$ *by M***T on January 27, 2026* Excellent product, near perfect fit. - All hardware is well engineered and sturdy. - Flush fit, looks great. - Top is very strong. - No documentation regarding the 8’ bed rail connectors, closeup and printed insert in package would be helpful - A closeup of the clip in rail insert geometry closeup, printed insert in package would be would helpful. I’d give 4stars but the dam thing is so cool, it works fantastic with my Ford F-450 Platinum. *** It’s worth the BIG $$$ THANKS. ### ⭐⭐⭐⭐⭐ Great support and product. *by P***T on September 17, 2025* Easy to install. Fits well. Durable. Great support. I’ve had this over a year now. The only issue I had was one of the plastic corners fell off which Bakflip replaced immediately. On the install, you need to ensure the brackets are exactly at a right angle to the bed. This takes a bit of adjusting otherwise the back locks won’t clip. My suggestion would be to increase the latch clearance a bit. I had issues with getting one side to latch but after using it for a bit, now both sides latch when I close the cover. ## Frequently Bought Together - BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448331 | Fits 2017 - 2023 Ford F-250/350 Super Duty 8' 2" Bed (98.1") - Westin 50-6415 Black Rubber Truck Bed Mat fits 2017-2022 F-250 F-350 Super Duty (8' Bed) - Husky Liners Weatherbeater Floor Mats | Fits 2017 - 2024 Ford F-250/F-350/F-450 SuperCrew Cab with Factory Carpet & with Fold Flat Storage | Front & 2nd Row, 3-pc Black - 94061 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/54888377-bak-bakflip-mx4-hard-folding-truck-bed-tonneau-cover-448331](https://www.desertcart.us/products/54888377-bak-bakflip-mx4-hard-folding-truck-bed-tonneau-cover-448331) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-06*