BAKFlip MX4 vs UnderCover Ultra Flex for Ford Maverick
MX4 FOR THE CLEAREST MAVERICK APPLICATION; ULTRA FLEX ONLY AFTER PART CONFIRMATION
Choose the BAKFlip MX4 when you want a currently documented 2022–2026 Maverick application, 400-pound evenly distributed rating and upright full-bed access. Choose the Ultra Flex only after UnderCover or the seller confirms the exact Maverick part number. Neither standard cover supplies rack rails; buy the MX4 TS or another T-slot system if a rack is planned.
Both are premium hard-fold covers, but the buying decision is fitment and future cargo architecture—not brand reputation. RealTruck currently lists MX4 part 448324 for the 2022–2026 Maverick. The standard MX4 folds against the cab for full bed access and carries a 400-pound evenly distributed rating.
The Ultra Flex adds carpeted underside panels and an integrated light in its published product design. Its application catalog must still resolve to the Maverick before purchase; a generic Ultra Flex listing is not evidence that the rails and panel lengths fit the short Maverick bed.
| Priority | Better starting point | Why |
|---|---|---|
| Verified current Maverick application | BAKFlip MX4 | Exact 2022–2026 application is published |
| Finished underside and included light | Ultra Flex | Product-specific convenience features |
| Bed rack later | Neither standard model | Require integrated T-slot rails; consider MX4 TS |
| Tall cargo | Verify both | Check the folded/upright position and rear-window clearance |
Compatibility snapshot
| Product | Maverick result | Required check |
|---|---|---|
| BAKFlip MX4 448324 | Documented for 2022–2026, 4'4" bed | Reconfirm part at checkout |
| UnderCover Ultra Flex | Unknown until exact application resolves | Require a Maverick-specific part number |
| BAKFlip MX4 TS 449324TS | Documented rack-ready option | Match rack feet and T-slot load limits |
Bottom line
MX4 is the safer documented buy today. Ultra Flex remains a valid design choice only when its current selector produces a Maverick-specific SKU. If any rack is part of the plan, stop comparing standard covers and start with a rack-ready rail system.
See the broader Maverick tonneau-cover type chooser before changing cover architecture.
Sources & notes
- RealTruck BAKFlip MX4 448324, accessed 2026-10-27. Maverick years, bed length, operation and rating.
- RealTruck BAKFlip MX4 TS 449324TS, accessed 2026-10-27. Maverick rack-ready application.
- UnderCover product catalog, accessed 2026-10-27. Ultra Flex design features.
- Reconfirm the exact part number and return terms before purchase.