Thule 400xt Aero Foot Pack - Thule Car Rack System

Thule 400xt Aero Foot Pack
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Rating of 4.3/5 on 4 reviews
Product Code: 100400xt
Status: Discontinued

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"The folks at Rack Attack are true experts in this category."
- Fred Clark, CEO Thule
Related Products:

The Thule 400xt Aero Foot Pack

Thule Bare Roof Mount Rack System

The Thule 400xt Aero Foot Pack is the best fitting foot for vehicles without a factory rack or rain gutters. Thule 400xt Aero replaces the original Thule 400 Aero foot with restyling, improved looks, better aerodynamics, and available security.


  • Upgrade looks of the 400 foot with stylized cover
  • Improved function with integrated one piece bolt and handle assembly
  • Sold as a set of 4 feet
  • Requires Thule Fit Kit and Thule square load bars to complete, both sold separately
  • Certain vehicles with shorter roof lines require the Thule short roof adapter, sold separately, check fit guide for more details
  • Includes 4 Thule end caps
  • Complete security with 4 Thule lock cylinders, sold separately


Weight: 6.1lbs

Length (carton): 14"

Width (carton): 8"

Height (carton): 6"

UPC: 091021400573

Manufacturer: Thule

Manufacturer Part Number: 400xt

Thule Warranty

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Thule Warranty

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I got my foot packs along with the feet to add a rack over my cab without rain gutters. I had one on my camper shell and needed one up front. I really appreciated the video on how to install, made it easier than the instructions that came with the product. I had never put on a rack without the rain gutters and was skeptical but after tugging on the bar and rocking the vehicle, looks like it hold. Thanks a great product. For canoeist I also recommend the load stops to go on the square Thule bars, they are better than gunwale rackets. I will refer everyone to Rack Attack that needs a rack.

2006 Chevrolet Silverado Crew Cab


This is very solid rack. Relatively easy installation. The biggest problem that I had was threading the clamps into the feet on the car. It was a little tough to get the bolts in without cross-threading. Everything fits perfectly.

2005 Scion xB


The instructions could have had a lot more details. Didn't realize the handle on the screw that engages the swivel nut has to be extended to give you enough length the engage the nut. The real pain was squeezing the "trigger" that locks the cross bar and rack to the foot. Finally had to use a block of wood and a C-clamp to get enough force to engage the locking mechanism. The rubber pads are exactly the right shape to match the prius roof/drip line. It seems a shame you have to spend another $50 to get enough locks to lock the rack to the car even tho they recommend them! I spent more on the roof rack and J-bars than I spent on one of my Kayaks! I gave this a 3 because the design makes the system very solid once it is on the car.

2007 toyota prius


I found the staff at Rack Attack very helpful and knowledgable. I have a car that is difficult to fit: 2007 Pontiac G6 4 door. I found the video very helpful in selecting the item and in installing the item. I ran into a problem with the 'clicking sounds' discribed on the video. The camera angle helped me to resolve the issue. While the Thule rack system was expensive for us, it was rock solid hauling a roof top box all the way to the beach and back... worth the $. I look forward to using it for other items.

2007 Pontiac G 6


Frequently Asked Questions

Below you will find a list of the most frequently asked questions for this product. If you need more assistance you can email a rack-install technician, or call us at: 1-877-432-8301

A base roof rack for a bare roof typically consists of towers, bars, clips, and locks. To find the exact parts for your car, use our base rack fit guide.

With so many different cars out there, we need to carry a wide range of roof rack components. To see what has been made specifically to fit your vehicle, enter your vehicle information in our base rack fit guide.

All required tools and instructions for the Thule 400xt Aero Foot Pack are provided. No particular expertise required, just be sure to follow the instructions closely. While installation times vary depending on your vehicle and racks purchased, installations typically take from 15-60 minutes.

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