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Will Thule Motion XT Rooftop Cargo Box Fit Thule Xsporter Pro Low Truck Bed Rack  

Updated 02/03/2026 | Published 06/28/2024

Question:

Will this rack accommodate a Thule brand roof top box? The cross bars look a little square for a roof box to clamp onto. Thanks.

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Expert Reply:

Hi Brooke; it looks like you have the Thule Motion XT Rooftop Cargo Box. This roof box fits crossbars that are up to 3-1/2" wide x 1-11/16" tall. The crossbars on the Thule Xsporter Pro Low Truck Bed Rack # TH24QC are 3-1/2" x 1-5/8" which means the roof box will be able to clamp onto the bars. The same is also true for the # TH34RR you looked at.

expert reply by:
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Robin H
Robin H. profile picture
Etrailer Expert

Robin H.

2/3/2026

Hey Brooke, how did the fit go with your Thule Motion XT roof box on the Xsporter Pro Low rack? Your feedback could help others wondering about clamp compatibility on those crossbars.

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