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Thule Big Mouth Bike Mount

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    22 Reviews


    Why bother removing your wheel?

    “Your bike ain't goin' nowhere!” says the Thule Big Mouth bike rack. The Big Mouth's titular Big Mouth is a clamp that securely grabs your bike's frame to hold it in place without you having to remove the front wheel. With this secure bike carrier, all you do is put your wheels in the track, tighten the straps and attach the clamp arm. The Big Mouth self adjusts for whatever bike frame you happen to be carrying, and its dual locking system locks the rack to your car and the bike to the rack, so unless they have a cutting torch or the key, nobody's getting your bike.

    • Item #THU0006

    Tech Specs

    Bike Capacity
    Locks Included
    Recommended Use
    transporting your bike

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Cross-Country Worthy

    • Familiarity: I've put it through the wringer

    Made the trek back and forth to New York twice using this bike rack. I was worried about it through Wyoming with the high winds but this thing held up the entire time, never had an issue, lots of bugs on the handle bars. Quick, durable and very effective.

    Easy to install and use

    • Familiarity: I've put it through the wringer

    Replaced my existing bike mount with the Big Mouth Mount, installation took less than 10 minutes are works perfectly with my thule rails. The mount securely holds my Specialized 29er. Don't have to worry about it moving despite rough roads on the way to the trail head.

    Street race-ably solid mount!

    • Familiarity: I've put it through the wringer

    I have had one of these for about a year now, and am about to invest in my second, i love it! It holds anything from my road bike, to by 47 lb old school downhill bike, with basically no adjustment. Bikes go on in about 20 seconds, off in 5! Lock works well, though if im somewhere i dont trust, i still use a cable lock as well for safety.

    I have pulled into my garage twice with my bike on this rack on top of my car. One of the times i had to replace the 2 straps that hold the wheels in place as i snapped them both, but neither time did the bike come off of the car, or damage the car in any way. Quite to the contrary i now have large dents in the wood on top of my garage. So i trust this rack to take bumpy corners at 50mph with a bike on it, as well as to drive as fast as i feel okay about beating my suspension up down any bumpy gravel road. Great durable product with an awesome design! highly recommended!

    I use this product on the OEM roof bars for a volvo S60. They are square bars similar to thule ones. This works well, and its easy to rach to load my bike

    Super quick

      Love this thing. If it takes more than 20 seconds to put your bike on top and 10 seconds to take it off then you are doing something wrong. Super convenient compared to taking a tire off. Very solid clamping system holds the bike in place,seems good to go even on the highway. Tire clamp adapters allow it to fit both mountain and road tires solidly. Fits well on yakima bars on a subaru, have not tried it on any stock rack.

      Well built, not bad

        I have had a Thule big mouth for probably about 8 years. It's a well built bike mount. I had some issues with the grip of the clamp on my large framed mountain bike. I use a bungee cord around the clap to make it a bit more solid and give me a little better piece of mind if I am driving on the freeway. I really don't have any major complaints on the build or functionality, but I really don't use it anymore. Since moving to a hitch mount bike rack I can say that I will probably never use a roof mount rack again. Putting the bike up on the roof rack and taking it down can be a pain. I have to open one of the back doors on my Jeep Grand Cherokee and step up on the door sill in order to reach the bike. It's a total pain versus using a hitch mounted rack. Overall, its a good product, but no longer for me.

        Thule Big Mouth Bike Mount

          I've used the Thule Big Mouth Bike Mount for one season and it actually holds my downhill bike or road bike rock solid. Although I've always used a fork mount rack in the past, this setup is really nice for muddy rides when you don't want to throw a dirty wheel in the car. The only thing I don't love is that there is significant added height when you put the bike on top in this configuration.

          Thule Big Mouth

            This thing is super easy to use and real sturdy. I can get my BMX bike mounted up in less than 5 minutes and have no worries about taking a cruise up the highway. I definitely recommend this to anyone looking for a solid carrier that doesn't require you to remove your front wheel.

            Decent Bite

              I've had my Big Mouths for about a year and I've come to pretty much love them. For starters, they are incredibly easy to install and even easier to put to use. I can get two bikes in their trays in under two minutes. I drive a Pontiac Vibe so it's a little taller than most cars but this rack is still a breeze. There are a couple of tricks that I've learned though. First, place the mouth in a vertical position that way you can plop your bike into the jaws right away. This will help hold your bike upright while you work your fat mtn. tires in the trays. Secondly, if you want to really secure your ride, before you close the jaws, reach up and squeeze the jaws around your frame and simultaneously close the lever. This will increase the pressure on the frame and to this day, I've never had any problems with the arm slipping on either my mountain bike or my roadie. Another little thing I've learned is that you can use the tire straps like a winch to really wedge your tires into the tray. There is a bit of sway when cornering or going over bumps but I've never been worried about the bikes coming off. Other than the increased wind noise, gas mileage takes a slight hit, even with two bikes up there. All in all, I'd be likely to buy this rack system again and I'd definitely recommend them to a friend but if you're looking for a rack that holds your bike completely secure, take a look at fork mount racks.


                Bike racks are going to be great. The installation was tricky, According to the dealer, the racks should have fit my "07" subaru outback, they did not. Had to buy the adapter bars. After I got the adapter everything installed beautifully. I am 5'4" and another worry was being able to lift both my mnt and road bikes. I will have to carry a small foot stool the adapter bars raised the rack another 5 or 6 inches, I was not happy about that. But with the stool I am able to pop the bikes right into the racks, secure them down and drive off without a worry. I also bought the key locks so don't have to worry about my bikes when I run into the store, ect. The riding season is just starting for me and I am excited to hit the road with my bikes securely locked in place. Would recommend these racks to anyone.

                Best Rack!

                  I have 2 of these BigMouth racks and they'll hold my Mtn and Road bikes securely all day up the mountains at break-neck speeds. The front and rear straps keep the wheels secure in the tray while the Big Mouth keeps the frame securely in place. They are easy to load on top of my XC-70 and I don't have to worry about my hand slipping on my bike and having a fork come crashing down on my roof, worst case, a tire taps the car on the way up.

                  Thank God the Straps Break

                    I've had the Thule Big Mouth for a year. I've also forgot a bike was on top and drove into the garage twice. I wouldn't recommend doing that, but the good news is that if you do this rack is designed to allow the bike to break off instead of damaging the fork.

                    Works Great !!

                      The thule mouth bike mount is great. It's easy to use. I put it on top of a Chevy Suburban, so it's a little awkward putting the bikes that far in the air, on to the rack, but I know they will be there when I get to my destination. I have four bikes/four racks. They hold'em tight and don't scratch them!!!


                        This bike rack gets the job done. At first it can be tricky to get the bike in the rack, but I quickly developed an effective method. Sometimes I have to pinch the clamp to get it tight around the bike frame but once it's on, it seems pretty stable. The whole rack is just super solid, as are all Thule products I have used.

                        Super Easy

                          I found this rack very easy to install. The only note is that you need a ruler/tape measure and an allen key. The allen key comes with the rack, a ruler doesn't.

                          My bike gets on and off easily and feels secure.

                          The rack is also easy to take off the car for when you aren't using it. I assume that if you have locks then it wouldn't be, but I don't have locks. Yet.

                          Dont think so

                            Not a very secure feeling. I have had my rack for almost a year. The "claw" is very loose and will slide a couple inches down the frame (I have a Cannondale F600). The bike sways left and right as go around corners and over speed bumps. Going to get a new "more secure" rack very soon.

                            BIG Mouth Causes Little Trouble

                              The Big Mouth Bike Mount works well. You have to maneuver the bike a bit to get the mouth to close properly on the down tube of your bike. At first, I was a bit concerned about how securely my bike was being held by the Big Mouth. But after a little experimentation, I found the position that works best for my bike to fit securely in the Big Mouth. Before taking any long trips with your bike mounted in the rack, I recommend you do some trial runs. It is possible to not have the bike as secure as it could be. If I could change one thing with this rack it would be to make the clamping arm a bit longer so the mouth piece that actually clamps on to the down tube of the bike sits more securely on the bike.

                              Does this rack have a lock and key...

                              Does this rack have a lock and key system

                              Is the mouth on that Big Mouth padded? I...

                              Is the mouth on that Big Mouth padded? I have a carbon road bike and a full-susser, and I want to make sure this rack can handle both. IE, I don't want to crush or scratch up the carbon roadie.


                              So is this rack compatible with stock...

                              So is this rack compatible with stock subaru cross bars? or would i need to purchase other cross bars for this rack?

                              will this rack work on my jeep liberty...

                              will this rack work on my jeep liberty rack/rail system? The two cross bars are Jeep manufactured and I am not sure if the Thule system will attach to the existing rails?

                              Most Thule bike racks seem to be compatible with factory racks with this converter kit:

                              But I would check out the Thule Rack Configurator at the top of the page to see if it will work with your Jeep's rack and if it would need the conversion kit for sure. Here is the link too:

                              Unanswered Question

                              Will it work with the standard rack on my...

                              Will it work with the standard rack on my 05 subaru now? If not, then what extras do I need to purchase?

                              Does this bike mount work with Saturn...

                              Does this bike mount work with Saturn factory crossbars? I have a Vue (2006) and it came with a roof rack and crossbars. I want to put a bike rack on it without having to buy new crossbars.

                              I'm sure there is a system to do what you are looking for (not purchasing additional bars, at least not a full set) but your bet bet to get that information is to go through the "rack configurator" otherwise it can be a gamble.


                              Write your question here..Will this rack...

                              Write your question here..Will this rack connect to my factory bars on my 2005 Subaru Outback? Or do I need to buy more parts? Like and adaptor?

                              I have a 1987 Jeep Wagoneer Limited. My...

                              I have a 1987 Jeep Wagoneer Limited. My wife and I want to take our mountain bikes with us and I was wondering if these roof mounts would work on my Jeep? If not, could you recommend some. Thank you.

                              Do you know if these racks are compatible...

                              Do you know if these racks are compatible with the Toyota 4runner roof rack system?

                              Hey Jason, you can find compatibility info for your 4Runner with our super-fly Rack Configurator linked at the top of the page. Most of the time racks can be adapted to your roof cross-bars with a particular piece of hardware. Check it out, it should give you all the info you need, and it's pretty easy to use.

                              I want to mount my mountain bike and two...

                              I want to mount my mountain bike and two kids mountain bikes as well on my Jeep. Will this support the needed space for three on the roof top?

                              I have two on my Volkswagon Passat wagon roof, and there is still plenty of room. I'm not tall, so the edge position is the only place I can mount the bikes without a step-stool. I'd have to be higher up to place the center bike(s) on the bars. I do have the Thule adapter bars added to my factory rack.