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RockyMountsBrassKnuckles Upright Mount

Sale 20% Off$175.96 $219.95

Item # RMO000A

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  • Black, One Size ($175.96)
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Item # RMO000A

Quit monkeying with your thru axle before you ride.

Quickly mount your road or mountain bike to your car without having to remove your front wheel with the RockyMounts BrassKnuckles Upright Mount. The from-fitting mounting hardware is universally compatible with any crossbar, while the wheels-on bike mount accommodates 20-29 inch wheels. The ergonomic BrassKnuckles allow you raise or lower the bar quickly and easily and are secured against either the front wheel or fork, eliminating frame contact. To increase fuel efficiency, the rack can be folded down for a low profile when not in use. Locks are sold separately. 

  • Non-corrosive aluminum
  • Form-fitting mounting hardware fits all crossbars
  • Ergonomic BrassKnuckles adjustability
  • No frame contact
  • Fits 20-29 inch wheels

  • Non-corrosive aluminum
  • Mounting hardware compatible with all crossbars
  • Ergonomic BrassKnuckles adjustability
  • Compatible with 20-29 inch wheels
  • Locks sold separately

Tech Specs
Bike Capacity
Part Number
1201, 1202, 1203
Recommended Use
Manufacturer Warranty
1 year

View more Roof Rack Bike Mounts

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    Does this rack accommodate fat bikes?

    Hey Darius,

    This rack holds tires up to 3.0” wide and diameters from 20” to 29”. It can fit up to 5” with additional fattie kit which is sold separately. Item # RMO000E on our site.

    Great rack

    • Familiarity: I've used it several times

    I bought this rack to replace my Yakima roof rack and I find that it makes less noise (no whistle!) and holds my bike much more secure. However, the video demonstration where you remove the mounting plate is misleading. In the video, the demonstrator pops the mounting plate off. It took several minutes of hard prying with a screw driver to remove the mounting plate to access the hardwear. Once off, it was easy to install, but I'd grab some tools instead of trying with your bare hands.

    Love it!

    • Familiarity: I've used it several times

    The set up was quick and simple! Holding the bike solid and secure. The rack looks great too! Overall very happy with the product!

    The Best

    • Familiarity: I've put it through the wringer

    Super easy to install. Ultimate fit, from BMX to fat bike, and everything in between. Love it!

    Love em

    • Familiarity: I've put it through the wringer

    Set up is quick and painless, they mount easily and they hold bikes solid. that's pretty much the checklist for what ya want in a bike rack. They look just fine too.

    Fits my fat factory bars

    • Familiarity: I've put it through the wringer

    This fits my fat factory bars and my fat tire bike, so I'm pumped. It was very easy for me to mount.

    I did have to WD40 the arm after it was over the winter. But, now it's manageable. I also wish it came with the locks. But, overall I'm really happy and it gets me where I want to go.

    Fits my fat factory bars

    Great rack

    • Familiarity: I've put it through the wringer

    I've got three of these now. They mount easily, are secure, and are low profile.

    Additionally, spare parts are available through RockyMounts (and eTrailer). The Toyota dealer managed to damage it in the car wash, and I was able to replace the arm and mounting straps.

    They are a touch pricey, but worth it.

    Unique design

    • Familiarity: I've used it several times

    Easy installation only took me about 30 minutes. I was disappointed the lock cores came separate and I ended up buying some later.

    This rack came stock as a passenger side installation, but I was able to swap to my driver side pretty quickly and easily.

    Feels super solid when driving and haven't noticed any issues with wind or shaking.

    worth a look

      I have had both these and the Thule and although I like the fuctions of the Thule I like the looks of this rack better. My kid has these on his car now and he loves them.

      Unanswered Question

      Will Thule lock cores work with this? I bought a large pack of them when I got my bars, hoping to have everything use the same key.

      Great first impression

        received this the evening befor a trip to the mountains carrying my fat bike with 5"wide tires. Assembled in 15 minutes with the "assistance" of my two year old. Mounted it in fading light in another 15 minutes. Practice loaded my bike to work out the best way. The rack is easy to assemble, easy to install/uninstall. After first install, I can do it about 5 minutes. With the fat bike adapter kit it held my bike securely and the bike is easy to put in place. Or as easy as any roof rack that requires you to hoiste your bike onto your rides roof can be. Time will tell on the durability but I am vary happy with the racks ease of assembly and operation.

        Great Rack

        • Familiarity: I've used it several times

        This is a great rack. I do doubt the durability and weather-proof on the foam on the frame contact point.

        Not sure what foam or frame contact point you are referring to as this rack doesn't contact the frame or have any foam. I do really like mine

        Best lookin rack on the mountain

          I have a white car and a black bike. So naturally I got the white rack and it looks like it came with my car! I get nothing but compliment after compliment on how great this rack looks. Functionally is simple and super solid. Easy to rack your bike up in less than 10 seconds! I'd buy this rack again for sure!!


          • Familiarity: I've put it through the wringer

          ive had almost every type of roof rack out there and this is by far the best. bikes are super stable even in high winds.


          • Familiarity: I've put it through the wringer

          I've used a few different racks, and this one is my favorite. Installation was easy and it's very low profile. You can lock the rack to your cross bars, and then lock your bike to the rack (lock cores sold separately). The brass knuckles holds your bike in place extremely well, with no wiggles, wobbles or otherwise. If you're looking for a well built, easy to use roof rack this is the one.

          Truly the best bike rack available.

          • Familiarity: I've put it through the wringer

          I've had this thing through over 60mph cross winds while traveling 75mph and it hardly moved an inch. I bought the fatty adapter and love how easy everything is to use. Kind of a bummer you have to buy the locks but they aren't that expensive, however they are an absolute must. 5 stars. If you want a bike rack for your roof, I would only recommend brass knuckles from RockyMounts.

          Truly the best bike rack available.

          Great roof rack with one caveat

          • Familiarity: I've used it several times

          This is a nice bike rack. It was simple to attach to the factory crossbars on my Subaru Forester, and once I got over the paranoia that my bike would fly off the roof at highway speeds, I feel confident that the rack provides a stable carrier for road and mountain bikes. The wheel holder ratchets down securely, and nothing touches the bike frame. My only gripe is that the brass knuckles arm can be a real #$@&%*! to pivot, especially when loading a bike onto an SUV, holding the frame with one hand, and trying to wrestle the arm into the right position with the other hand. This is made worse after a long ride, when there is very little wrestle left in my body. I've read that I can loosen the retaining collar for the arm to ease the movement, but I haven't gotten around to that yet.

          I had the same problem, get around to loosening the retaining collar it makes a great rack even better!

          Best roof rack available!

          • Familiarity: I've used it several times

          Every rack wants to be a Rockymounts Brass Knuckle. It works like they all should. Plus, it's the most low profile rack there is. It goes perfectly with my whisper quiet Thule aero bars. Even though it looks like my mini's about to joust.

          Best roof rack available!