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THULE 636S Sonic XXL Cargo Box, Silver

Item: 17797946 Product Description >

Regular Price: $699.95 SALE $559.96

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  • THULE 636S Sonic XXL Cargo Box, Silver

    The Sonic Box combines efficiency with style. It designed for those looking for an aerodynamic box with a wide variety of size and convenience options.

    This product will be shipped directly from Thule and will leave their warehouse in 2-3 business days. Eligible for UPS ground shipping only.


    • 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

  • THULE 636S Sonic XXL Cargo Box, Silver

    Height 17 in.
    Length 99 in.
    Weight 63 lb.
    Width 37 in.
    Shipping Surcharge Yes


by PowerReviews
THULE 636S Sonic XXL Cargo Box, Silver

(based on 1 review)

Reviewed by 1 customer

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(1 of 1 customers found this review helpful)


Worst Roof Box Ever

By Disappointed in Thule

from Marblehead, MA


  • literally none


  • Cannot Adjust Latches
  • Cannot Store Flat
  • Horrible Attachment
  • Just awful
  • Latches break
  • Sorry I Ever Bought
  • Waste of money

Best Uses

  • As A Raised Bed Garden
  • Return Or Trash

Comments about THULE 636S Sonic XXL Cargo Box, Silver:

This box is awful. I have now gone through 8 latches. the last 2 broke while on the car. Somehow while full they decided it was time to retire and stay connected to the car....forever. I can understand why as it is their second season.

You cannot store the box flat with the latches to attach to the bars in place---found that out last year when 2 others one broke....EMS told me that happens "all the time". Great design Thule.

For this type of money, I should not have to worry about a bracket breaking except for exceptional use and wear.

  • Was this a gift?:
  • No

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