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Roof Cargo Box to Fit Crossbars of Thule TracRac SR Ladder Rack


Thinking of buying a tracrac sliding rack for our truck. Will a Thule force or motion cargo box fit on the rack? Thanks


Expert Reply:

The Thule cargo boxes fit crossbars up to 3-1/2" wide x 1-11/16" tall while the crossbars for the Thule TracRac SR Sliding Truck Bed Ladder Rack # TH43003XT-784, that fits your 2017 Ram 1500 5-1/2' bed, measure 4" wide x 1-1/2" tall. Since this is the case I recommend using the Inno Box 2020 # IN86FR instead because it can be mounted inside the T-Slots of the TracRac crossbars using the Hardware Kit # INBRP12.

This is currently (January 2022) the only roof cargo box that has the option to mount using the T-Slots, but even at that it is a great cargo box with dual-side access and a matte black finish so I know you won't be disappointed.

expert reply by:
Jon G

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