Thule's Big Mouth Upright Bicycle Carrier

    The Thule 599xtr Big Mouth Upright Bike Carrier is the staple in Thule’s line of bike racks. Easily the most popular model, the Big Mouth provides a self adjusting clamp to grab hold of the diagonal down tube on the frame of your bike. It can be used with a tube as big as 3 1/8” in diameter. Better still, the Big Mouth can be mounted for access from either side of the vehicle, and the handle which operates the down tube clamp is at the bottom of the clamping arm, meaning you won't need a stepladder to load and release your bike! Both wheels are strapped down to the tray. It works quite well with kids bikes. This model is great for driving around town or across country, and with such fast and easy loading and its great price, it's not hard to see why this has become one of Thule's best selling bike trays.
    If you'd like to leave your bicycle unattended without worrying about somebody stealing it, the Big Mouth has you covered. Just pop in one Thule lock core (sold separately) and you can lock the clamp to your bike's down tube. This also locks the tray to your roof rack.  Installation has a few more steps in this model than some others. The Big Mouth comes set up to mount on the passenger side of your vehicle, but if you need to mount it on the driver's side, just follow the instructions for moving the clamp assembly to the other end of the tray.  Then follow the pictures in the manual on how the mounting hardware is put together. The Big Mouth mounts directly to  square and round bars right out of the box. If you have a Thule aero bar rack or an Xsporter, you will need Thule's Xadapt2 Adapter Kit to mount the Big Mouth.