Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Rating: 
3 reviews
Code: TH599XTR
Retail:$159.95
Price:$143.95
Shipping Weight: 10.4 pounds
Shipping SpecialThis upright bike carrier minimizes frame contact to prevent scratches. It is easy to mount and automatic, self-adjusting jaws provide worry-free security every time.
Here it is - the upright bike carrier that set the standard for bike carrying flexibility and ease of use. The front wheel mounting system of this bike rack minimizes frame contact, making it ideal for today's monocoque and aggressive frame designs. With a sleek design that not only looks good but also makes for convenient, hassle-free loading and unloading, the Big Mouth is a sure bet to get your bikes safely to your next destination.
The Big Mouth claw can be locked with an optional Thule lock cylinder. The claw opens by simply pulling the handle down. To secure the bike, snap the handle back up.
The front and back wheel of the bike are secured to the carrier rail with ratcheting straps. The strap goes through a rubber wheel holder to ensure a tight secure fit while also protecting the bike wheel.
Video of Thule Big Mouth Roof Mounted Bike Rack - Frame Clamp
Videos are provided as a guide only. Refer to manufacturer
installation instructions and specs for complete information.
Today we are going to show you part number TH599, the XTR Big Mouth Upright Carrier from Thule. What this bicycle carrier is designed to do is carry bikes in an upright position with both wheels attached to the bike. And this bicycle carrier will attach to all Thule roof rack models and to Yakima models also. First, I will show you some of the features of this bicycle rack, starting with how it attaches to a typical roof rack. Following, on the rear of the vehicle, you will see that the roof rack has a clamp-like system right here. And basically it has two bolts coming down and a plate and the threaded knobs that actually clamp it to your roof rack bar right here. And this is also fully adjustable on the track of the carrier itself.
Moving on to the front of the vehicle, we can see where the rack actually clamps to the front of the bar here. And it has got a pretty neat little deal. Basically it has an arm that comes down through the bottom and wraps around the bar. It also has this quick-release mechanism right here, kind of like the quick-release on the fork of the bike. And basically this little bracket comes around. And this quick release has this little bolt right here with a special head assembly and this goes onto the little bracket that wraps around the crossbar of the roof rack. And you just give it a couple of turns and then you can just go ahead and push it down and lock it into place. There is one on each side of the rack itself.
And what is also nice that holds your bike into place is you have got two sets of these straps right here. Basically this pad goes over your rim, this slides through the bracket - you can actually ratchet it to make it as tight as you need to. And it holds the front wheel of the bike in place. And there is also one identical to it on the rear of the rack itself. Well, featuring the clamp itself, this is the part that actually clamps onto the frame of the bicycle. It also has this neat lever assembly here that kind of has a spring-loaded assist. So basically when you put your bike in and you clamp it down, the spring pulls it as tight as possible. And then you just give a little more force on it to make it as tight as you can and then push the lever into place, which locks it so the jaws cannot reopen.
All right, now we will go ahead and install a bike on the rack and show you how it works. Again, there is no need to take the front wheel off with this one. Bring up the Big Mouth part of the rack. And then kind of push the locking lever in a little bit and then then push it down a little more so it clamps onto the frame - and the clamps are rubber lined, so they will not scratch your frame - and then lock it into place. And next we just strap the wheels in onto the track itself. And with that, your bike is secure and ready to go down the road. All right, and there you have it for part number TH599XTR, the Big Mouth from Thule, their upright carrier.
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Average Customer Rating: 4.7 out of 5 stars (3 Customer Reviews)
by: jeff04/14/2011
Is this review helpful?
very sturdy even at speed 11746
by: Andrew09/22/2012
Is this review helpful?
Rack is a little flimsy in spots, the handle where it cams the the jaw open can separate and it requires a little help with both hands, however keep the action clean and lubed and this may never be a problem. Bike has always seemed secure whether on the highway or weaving and jouncing on back roads and it is fairly easy to use. I bought one a year ago after which I made it a pair. 55483
by: Eddie K08/26/2011
Is this review helpful?
Very nice product, easy assembly. Only thing I dont like is I have to purchase the locking mechanism's seperatly. I think it should all be integrated...Oh well, still very pleased.22882
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