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Thule 599XTR Big Mouth Upright Rooftop Bicycle Carrier
Show more by Thule
Average Rating: 4.0 star rating (15 Reviews)
List Price: $159.95
Our Price: $143.95
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  • Easy to mount, convenient rack level bike clamping feature
  • Worry free automatic self-adjusting jaws for perfect bike clamping
  • Accommodates bike frames up to 3-1/8" in diameter
  • Dual locking design locks bike to carrier and carrier to rack
  • Fits Thule and Yakmia load bars
Product Description:
The upright bike carrier that set the standard for bike carrying flexibility and ease of use
The Thule Big Mouth Upright Rooftop Bicycle Carrier mounted on a car rack
Superior rooftop stability for transporting your bike that's affordable on most any budget.
View larger.
The jaw like configuration of the Big Mouth Upright Rooftop Bicycle Carrier
Powerful self-adjusting center jaw support.
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The center support of the Thule Big Mouth Upright Rooftop Bicycle Carrier laid flat
Easy slider handle and slider support locking.
View larger.

Rock Solid, Easy-to-Use Design

The Big Mouth Upright Rooftop Bicycle Carrier is designed for ease of use and dependable stability on a budget. The Big Mouth fits all Thule rack systems, as well as other round bars, is compatible with the Thule Aero profile with an additional adapter (sold separately) and most bikes with disc brakes. The key factors in the stability that the Big Mouth provides is the combination of its sturdy wheel tray which holds your bike wheels, the two cinchable wheel straps that quickly secure the wheels to the tray and most importantly the center support's jaw like grip on your bike's central frame.

Stabilizing of the center support and adjusting of the Big Mouth's jaws are controlled by a simple combination of moving the release handle to the closed position and pulling down the slider. As pressure is applied to the frame tube the jaws adjust automatically to just the right amount of pressure for optimal holding power. Both the release handle and slider are located on a single leg of the center support of the Big Mouth making one-handed locking functionality possible, while the other hand balances the bike on the wheel tray.

Key Features

  • Self-adjusting jaws automatically wrap around the downtube for precise frame hold
  • Combination handle and slider mechanism to grip frame and stabilize center support
  • Fits bike frames up to 3? inches in diameter and tires up to 2.6 inches wide
  • 1 One-Key lock cylinder (sold separately) locks the bike to carrier and carrier to rack
  • Fits Thule rack systems or other round bars
  • Factory rack compatible with Thule Ride-On Adapter (sold separately)
  • Along with standard passenger side orientation the carrier can be configured for drivers side use
  • Wheel tray is compatible with mountain bikes and road bikes (via included adapter)

Specifications

  • Load Capacity (bikes) - 1
  • Fits Tire Dimensions (in) - 2.6 inches
  • Fits Thule Aero Profile - Yes (adapter required)
  • Fits Square Bar - Yes
  • Fits Most Bikes with Disc Brakes - Yes
  • One Key System Compatible (locks sold separately) - Yes
  • For Tandem Bikes - No

What's in the Box

Thule Big Mouth Upright Rooftop Bicycle Carrier, all the necessary mounting hardware, and instruction guide/warranty card.

Limited Lifetime Warranty

Thule will warranty all Thule brand car rack systems and its accessories manufactured by Thule during the time that an original retail purchaser owns the product. This warranty terminates if a purchaser transfers the product to any other person. No warranty is given for defects caused by normal wear and tear, cosmetic rust, scratches, accidents, unlawful vehicle operation, or modification of, or any types of repair of a load carrier system other than those authorized by Thule.

About Thule

Thule was founded in 1942 by the Thulin family, when Eric Thulin, a true lover of the outdoors, put the Thule name on a pike trap he designed and began to sell in Scandinavia. It wasn't long before he added other practical items to the company's portfolio. By the 1960s, the company began to concentrate on car-related products, including its first roof rack. The Thulin family sold Thule to the publicly listed company Eldon in 1979, and it has continued to grow both organically and through acquisitions ever since. The Thule Group is a world leader in providing transport solutions for an active life.

Customer Reviews:  
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3.0 out of 5 stars.  Great item, needs modification, May 25, 2007
By David E. Eves
This bike rack works well once it is mounted. The description of the item did not mention that it needed to be mounted on the Thule roof rack adapter. I ordered only the bike rack. I hoped that the rack would mount directly to my Toyota Rav4's factory roof rack. I've since been looking at other factory roof racks, and have noticed that most of them have airplane wing-like bars which go from side to side. These bars are about three inches in width, and the hardware on the Big Mouth Bike Rack is set up to fit the Thule adapter, which has bars little more than an inch in width. Instead of ordering the adapter, I spent a day tooling my own mounting hardware. This gives the bike rack a much cleaner look, and sets the rack and bike closer to the roof, making it easier to load and unload. The second problem is that the end caps come off much too easily. Other than these problems, the rack works well, and is easy to load and unload.

25 of 26 people found the above review helpful.

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4.0 out of 5 stars.  Thule 599XTR Big Mouth Upright Rooftop Bicycle Carrier, October 15, 2008
By Caree (MI, USA)
This item was purchased, because I already have 1 Thule upright bike carrier and like it. It is an older style, but similar. The thing that I like about the upright roof carriers is that if someone hits your car from behind, your bikes are not destoyed too. Also, the upright ones are secure and "stay" there, and the front wheels do not have to be taken off and reconnected and brakes readjusted. A lot of bother if wanted to just take the bikes off and ride. I do have to have a little stool to reach my Jeep roof, but it is claspable and stores in my Thule carrier box. So, yes, the Thule box and 2 upright bike carriers fit on a Jeep Cherokee.

Care
[ASIN:B0001HACDM Thule 599XTR Big Mouth Upright Rooftop Bicycle Carrier]

10 of 10 people found the above review helpful.

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4.0 out of 5 stars.  I like it but it sticks., January 25, 2011
By Jason W. Fudge (San Diego, Ca)
I've had this on my car now for about a year. It's little stiff now to open/close. I usually have to grab the clamp part and open it myself. Take it, in the last year I've traveled about 30,000 miles on my car and rarley wash it, so that might be the case too. I also have a 29er and it fits it just right.

It's nice to be the guy that has his bike off the car the first before the ride and on the car first afterwards. I'm not a big fan of the racks where you have to take off a tire.

6 of 6 people found the above review helpful.

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5.0 out of 5 stars.  EASY TO UNSTALL AND USE!!!, May 29, 2007
By Steven (Virginia Beach, VA)
This bicycle carrier is awesome. It folds down when not in use. It is very easy to attach a bicycle to it. We like our a lot.

6 of 7 people found the above review helpful.

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5.0 out of 5 stars.  Great OEM Volvo bike rack - great for oversized frame tubes, September 12, 2008
By C. Dillman (North Yarmouth, Maine USA)
Great rack that fits my Volvo V70 removable sport bars. This rack is well built, very easy to operate from the ground. It securely clamps the oversized aluminum tubes of my son's trek. I have noticed a slight decrease in fuel mileage over using a wheel off bike rack.

5 of 5 people found the above review helpful.

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5.0 out of 5 stars.  Thule Bike Rack, July 27, 2010
By Bonni Gilley (California)
Great bike rack. We just drove all the way to Bend Oregon and back home, a 10 1/2 hour trip each way. The rack held our bikes securely and kept us worry free the whole trip.

4 of 4 people found the above review helpful.

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5.0 out of 5 stars.  great!, July 2, 2008
By Rebecca R. F. Brown
This bike rack was easy to install, and it is easy to use. No need to take off a wheel, the bike is very secure up there.You do need to have the thule roof rack to use this bike rack. It's just the bike rack, not the roof bars.

3 of 3 people found the above review helpful.

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2.0 out of 5 stars.  Mounting bike on rack maybe a challenge, not theft resistant like Criterium, April 6, 2011
By Watchful Dad
I've had the Criterium for a few years, and noticed that I lost a bracket, so I got a replacement. The reviews for the Big Mouth was even with the Criterium (I didn't consider the 594XT Sidearm because the arm mounts to the front tire which meant stealing the frame is easy). I live in a major city, and don't leave my bike on the carrier for a long time without supervision. I found that the Big Mouth had many problems and a few advantages over the Criterium. I'll outline the Pros and Cons of this carrier here:

Pros:
- Lightweight compared to the Criterium (Couldn't find actual product weight, but shipping weight was 8.6 lbs for the Big Mouth (Amazon Product Description says it's 10.5 lbs which is incorrect) as opposed to Criterium's 10.4 lbs)
- Easier to install than Criterium

Cons:
- Single cylinder lock means that bike is secured on the carrier and is hard to be stolen, but carrier is not secure on the rack when not in use. Carrier can be stolen easily in less than a minute. Criterium can be fitted with cylinder locks to prevent carrier and/or bike theft.
- Mounting bike means that you have to place bike on the rack, rolling it backwards until you can raise the arm up. Once arm is raised, a lever needs to be pulled with another hand in order to open its jaws to accept the bike frame. Doing it by yourself can be challenging. Criterium is easier as you don't need to roll your bike too much as raising the single arm to the frame's height is all you need to do.
- Locking bike frame into the clamp is a three step process as specified by Thule, where Criterium is a dial that you crack to tighten its jaws.
- Smaller foot print on the front load bars mean that the my bike swayed a little more on bumps as opposed to Criterium which has a slightly bigger footprint.

All in all, I would not recommend this carrier to anyone.

2 of 2 people found the above review helpful.

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5.0 out of 5 stars.  Thule 599XTR Big Mouth Rooftop Bicycle Rack - BUY LOCK CYLINDERS SEPERATELY, March 21, 2011
By The Thompsons (Colorado)
Thule 599XTR Big Mouth Upright Rooftop Bicycle Carrier If you are considering buying this Thule 599XTR Big Mouth Upright Rooftop Bicycle Rack, as I did... be aware that this bike rack DOES have a place for ONE lock cylinder that locks the "arm" onto your bike frame when it is mounted in the rack, if you would like a bit more security from thieves. You can buy a pack of locks which all use a single set of keys, depending on if you are buying/using more than one rack (as I am). The lock cylinders that you can buy separately are available in the following:

Sold in the following sets:

* 2 Pack (Thule 512)
* 4 Pack (Thule 544)
* 6 Pack (Thule 596)
* 8 Pack (Thule 588)
* 10 Pack (Thule 510)
* All lock packs come with two keys

"You can choose how many locks you need and have one key for all of your carriers! When purchasing lock cores for your vehicle, it's best to forward think about what other types of Thule accessories you may wish to purchase in the future, so that you can have all of your Thule core lock accessories keyed alike."

2 of 2 people found the above review helpful.

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2.0 out of 5 stars.  Thule Big Mouth - Average but not Great, June 5, 2010
By Bradley D. Horton (Jefferson, Maryland United States)
I gave two stars because I've had to make modifications to two Thule products to make them all work together AND you have to keep on shelling out money for everything to work as you want them too. Obviously, the engineers at Thule haven't tried putting combinations of products in play to see their compatibility. I have the Big Mouth, the Thule roof supports that it sits on, and the Thule fairing. I bought the supports, then the Big Mouth so I can haul my road and off road bike, and then I had to shell out for the fairing because of the howling wind noise. The major issue is that when you combine all three you have to begin modifying. Due to the straps from the fairing, the long levers that hold the Big Mouth and the long bike strap levers all get in the way of each other. To solve this issue I had to cut off half of the bike strap lever AND (since that wasn't enough) I had to cut off the lever that secures the Big Mouth to the supports. In the end, it's a good product made less than average because Thule obviously didn't try it with different combinations of their other products (which you'll be forced to buy - ugh) and that's frustrating...for a product to be great it comes down to the details and no need for the customer who paid $$ to put in extra work to make things work...Thule has yet to figure this one out.

2 of 5 people found the above review helpful.

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5.0 out of 5 stars.  Thule 599XTR Big Mouth Rooftop Bicycle Rack - BUY LOCK CYLINDERS SEPERATELY, March 21, 2011
By The Thompsons (Colorado)
Thule 599XTR Big Mouth Upright Rooftop Bicycle Carrier If you are considering buying this Thule 599XTR Big Mouth Upright Rooftop Bicycle Rack, as I did... be aware that this bike rack DOES have a place for ONE lock cylinder that locks the "arm" onto your bike frame when it is mounted in the rack, if you would like a bit more security from thieves. You can buy a pack of locks which all use a single set of keys, depending on if you are buying/using more than one rack (as I am). The lock cylinders that you can buy separately are available in the following:

Sold in the following sets:

* 2 Pack (Thule 512)
* 4 Pack (Thule 544)
* 6 Pack (Thule 596)
* 8 Pack (Thule 588)
* 10 Pack (Thule 510)
* All lock packs come with two keys

"You can choose how many locks you need and have one key for all of your carriers! When purchasing lock cores for your vehicle, it's best to forward think about what other types of Thule accessories you may wish to purchase in the future, so that you can have all of your Thule core lock accessories keyed alike."

2 of 2 people found the above review helpful.

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5.0 out of 5 stars.  Nice rack... not too expensive., July 13, 2011
By McBrew
Warning: If you have the Thule Aero load bars or VW factory roof bars (the thick, aluminum ones), you will NEED the Thule Xadapt2 kit to attach this bike rack to your car. You'll want to order the kit when you order your Bigmouth rack, because you won't be able to find the Xadapt2 locally -- trust me!

I wanted a good quality rack, but didn't want to spend more than my bikes cost on them. I read enough reviews that I was sold on the Bigmouth. I really didn't want a fork mount, because I drive a subcompact car, and didn't want to have to carry the front wheels inside the car. I had a hitch-mount bike rack, but it was pretty cheap, and the bikes and car were getting scratched as they moved. Also, I frequently tow a small trailer, and I couldn't use the hitch rack and tow at the same time.

Once I got the Xadapt2 kits to allow me to attach the racks to by Aero roof bars, they went on easily. It is actually easier to get the bikes on and off of the roof rack than it was on the hitch rack. Mainly because I dodn't need to use bungees and straps to try to secure them.

The bikes seem very secure up there. The Bigmouth clamp makes it easy, because it is spring loaded and "wants" to grab the bike frame. Once it grabs the bike, you can let go and the bike will stay upright. Just pull down and close the clamp lever, then tighten the wheel straps. Super quick and easy!

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4.0 out of 5 stars.  4 Stars on these newer models, June 27, 2011
By Bill (North Windham Conn.)
I bought one of these when they first came out and i still have it. The first seems slightly longer.. the end caps stay on don't pop off like these do. I noticed on the newer ones the straps that you ratchet down might slip if you have them to tight. The older model will not slip no matter how tight you have it. The older models have a rear plate built onto it resembling the front plate.. newer ones just have two bolts now clamping the rear down. It does get the job done but would have been cool to have them built like the first models.

I just need to figure out a way to keep the end caps on.. Super Glue should do it.

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4.0 out of 5 stars.  OK, after some fixes, May 3, 2012
By Andre van de Geijn (Hacienda Heights, California)
First you think: is this going to hold my bike when I drive 70 miles an hour? And yes, it will do. But one things that doesn't work are the plastic 'things' that you need to screw down, to a 'certain' point, which is not defined, and then you press them down. For one of my bikes, this worked fine, but when putting the other on top of the car, and push the plastic down, it broke! Didn't expect that I'm that strong. So used a spare one, but that was still feeling loose. So during the drive I had to first stop every 2 miles to clamp it back down, and find some duck tape in the end to keep it down. I will make a modification by myself. But for the price you pay for it, you don't expect you've to do that.
Except for this minor item, it is a really easy to use rack. Yes, you need to have some muscles and length to put your mountain bike on the roof of an SUV, but that isn't an issue for me. Open the 'big mouth', put your bike on the rail, close the 'big mount', close the straps, and finished! Really easy! Fits easily small and larger bikes (24 - 29 wheel inches) So when Thule goes back to the drawing board to fix the clamps idea, I will give it 5 stars.

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5.0 out of 5 stars.  Basically only product on the market, November 2, 2010
By A. Brodsky (Alexandria, VA United States)
Other than Yakima, who are you going to buy? Anyway, this is alot cheaper than Yakima products, so I like that! Bikes lock in great, and fit tight. In terms of convenience, I would rather have a tailgate type rack, but I don't have a trailer hitch set up so this is it.

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