Sonic XL Thule Cargo Box

Thule Sonic XL 635S


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Out of stock


Thule Sonic XL 635S

Combines technology with style.


  • Patented AeroNose Design reduces drag and noise making it the most aerodynamic box available.
  • Patented Rear-Angled Base and expanded vehicle mounting points help maximize trunk and hatch clearance.
  • AcuTight Mounting “clicks” when you reach optimal hold to ensure your box is secured to the rack.
  • SecureLock ensures that all gear is locked and box is properly closed prior to driving
  • Dual-Side opening for easier loading and unloading from either side of the vehicle
  • Fits Thule rack systems, round bars and most factory racks
  • 2 One-Key Locks (included) secure box contents and lock the box to the carrier

Technical specifications

Volume (cu ft) 17
Width (in) 34.5 in
Length (in) 90 in
Height (in) 16 in
Load capacity 110 lb
Weight (lb) 51 lb
Mounting system Acu-Tight
Box opening Dual-Side
Foldable for easy storage
Central lock Yess
Load capacity Skis 6-8
Load capacity Snowboards 4-6
Max length of skis (cm) 201
Ski carrier Yes
Fits WingBar Yes
Fits SlideBar
Fits Aero Profile Yes
Fits SquareBar Yes
TšV/GS approved
Fulfils City Crash norm
Model number 635S




Additional information


Black, Silver