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Roof bike rack

Thule Circuit

Low-profile fork-mount bike rack for security, convenience, and aerodynamic styling.



  • Easy to secure the bike to the carrier with the locking skewer (lock and cylinder sold separately)
  • Fast loading and security provided by lockable skewer with same-side adjustment dial (locks sold separately)
  • Versatile design compatible with standard 9mm axles and most disc brakes
  • Easy to install with universal tool-free mounting
  • Integrated wheel cradle high-wall design provides protection and perfect fit beneath your wheel
  • Low-profile aluminum tray made from corrosion-resistant aluminum to withstand the elements
  • Secure the rear wheel quickly with the ratcheting wheel strap
  • Locks the bike to the bike rack and the bike rack to the roof racks with Thule One-Key lock cylinder (sold separately)
  • Fits Thule rack systems, round bars, and most factory racks with around the bar tool-free mounting

Technical specifications

Load capacity 35 lb
Dimensions 55 x 8.6 x 5.25 in
Weight 6.1 lb
Fits round frame dimensions All
Thru-axle compatible Adapter/s required
Carbon fork dropout compatible
Fits roof racks with 20x20 mm T-tracks
Fits roof racks with 24x30 mm T-tracks
Fits Thule WingBar Evo
Fits Thule SquareBar
Fits Thule ProBar
One Key System compatible
Model number 526XT
Spare parts



Thule BringIt! GuaranteeThule is dedicated to providing exceptional products that are quality tested and guaranteed against defects in materials and workmanship.

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Accessories for Thule Circuit


A little disappointing


I shall use this when we want to transport both bikes. The set up was fairly easy, and the instructions were clear. My only issue is with the fork skewer. Due to the way it's made, you can't install it and leave it on the rack. The end cap isn't tight and would just fall off, so I'll need to keep it in the car, and install when needed.

Jack on Mac

Wauconda, IL


Non Adjustable Skewer is a huge limitation


I recently bought a Subaru Outback and chose to buy the Thule Racks (Rook Rack + Fork Mounted Bike Rack) from the Subaru. I am really disappointed in the fork mounted bike rack because it does not come with an adjustable skewer to accommodate different sizes of forks. My carbon road bike's fork has a thinner dropout and therefore does not have a snug fit on the bike rack.... I have had to use (spacers/washers) from my local hardware store just ensure a snug fit. I have had several fork mounted roof bike racksand this is the first time I have come across such a par design. For the life of me I cannot imagine why Thule chose not to provide an adjustable skewer. Especially when you consider that Thule makes other rook bike racks with adjustable skewers. If you have multiple bikes with different sizes of fork dropouts then do not buy this product as it will not work.

Sriram Varadarajan

Denver, CO


I love it


I don't use a bike rack a ton but this one works great. Good looking, easy to use, and not too noisy. I did have the end cap come off and lose the real wheel carrier but it's an inexpensive replacement part.




Thule Circuit

3.8 5