F-150 tonneau cover fitment by bed length: 5.5-ft, 6.5-ft, and 8-ft beds
How to measure Ford F-150 bed lengths for tonneau covers, verify tailgate step clearance, handle Pro Power Onboard side outlets, and avoid ordering errors.
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Shopping for a Ford F-150 tonneau cover requires measuring the inside of your truck bed rather than relying on nominal rounded numbers. Ford offers three distinct box sizes across 13th Gen and 14th Gen F-150 trucks, and bed rails are not cross-compatible between different bed lengths.
To determine your exact cover size, measure the inside length of your truck bed with the tailgate closed, from the inside edge of the front bulkhead to the inside edge of the tailgate. Standard 5.5-foot short beds measure 67.1 inches, standard 6.5-foot beds measure 78.9 inches, and 8-foot long beds measure 97.6 inches.
SuperCrew 4-door models typically come with the 5.5-foot short bed, while SuperCab extended-cab trucks feature the 6.5-foot bed. Regular Cab work-truck models exclusively utilize the 8-foot long bed. Confirming your cab and bed configuration ensures you select the correct rail length.
Modern F-150 beds also feature optional equipment like the integrated tailgate step and Pro Power Onboard generator outlets. Choosing a versatile roll-up cover like the TruXedo TruXport tonneau cover or a tri-fold design like the Extang Trifecta tonneau cover provides secure weather protection while allowing full access to bed tie-down cleats and electrical ports.
Drop-in plastic bedliners may wrap over the bed rails and front bulkhead. If your truck has a drop-in plastic liner, you may need to notch small clearance slots under the side flanges so the tonneau rail clamps can grip the inner bed metal securely.
## Product pages to compare
- TruXedo TruXport tonneau cover: sleek roll-up cover with pre-set tension control that sits 1.5 inches above the bed rail. - Extang Trifecta tonneau cover: heavy-duty tri-fold cover with patented EZ-Lock clamps for fast tool-free removal.
## Before checkout
- Measure inside bed length with a tape measure (67.1", 78.9", or 97.6"). - Check for the optional Ford tailgate step to confirm rear weatherstrip compatibility. - Ensure side-rail clamps clear Pro Power Onboard electrical panel doors. - Confirm whether drop-in liner rail caps need trimming before clamping rails.
Product pages to compare
- Inside bulkhead-to-tailgate tape measurement (67.1" vs 78.9" vs 97.6")
- Cab style verification (SuperCrew 5.5ft vs SuperCab 6.5ft vs Regular Cab 8ft)
- Pro Power Onboard bed electrical outlet side panel clearance check
- Factory tailgate step spoiler plastic trim overlap verification
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