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Thule Sonic XL 635B

SKU # 635B

Combines technology with style.

Price: $659.95

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  • 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) 17
Length (in) 90 in
Width (in) 34.5 in
Height (in) 16 in
Weight (lb) 51 lb
Mounting system Acu-Tight
Box opening Dual-Side
Central lock Y
Max length of skis (cm) 201
Color -
Fits Aero Profile Y
Fits SquareBar Y
SKU No 635B


A patented Thule feature, enabling the box to be opened from both sides of the roof. This does not only mean easy loading and access to the load, but also greatly facilitates mounting of the roofbox.


Best trunk and rear hatch clearance in its class

Thule Sonic XL 635B

Available Jan 2013 -

Parts Product Price Sku Status Quantity
A AcuTight Mounting Hardware with screw $29.95 7521484001  
B Cradle for AcuTight / Quick-Grip $3.95 8523387001  
C Slide Strip $1.00 05401  
D Lid Lifter $9.50 14936  
E Lift Handle, left $3.95 8523370001  
F Lift Handle, right $3.95 8523370002  
G Lift Handle mounting screw $0.19 8523479001  
H Tie-Down Strap $4.00 10169  


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