Arrives before Christmas 
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The sleek, tough BrassKnuckles packs a punch, carrying 1 bicycle on your vehicle's roof in style - without making frame contact. Pivoting arm, ergonomic handle, and non-pinching trigger allow for easy operation. Fits most roof rack crossbars.
Features:
Specs:
Average Customer Rating: 4.8 out of 5 stars (36 Customer Reviews)
The sleek, tough BrassKnuckles packs a punch, carrying 1 bicycle on your vehicle's roof in style - without making frame contact. Pivoting arm, ergonomic handle, and non-pinching trigger allow for easy operation. Fits most roof rack crossbars.l
Low profile, holds the bikes in place and very easy to put the bikes on the rack. Also, very east install.
Pretty straight forward when assembling, very sturdy item. A little on the heavy side but you know its got quality behind it.
Love this product!! Super easy to put together and install on my Subaru!!! Highly recommended to anyone who is looking for this style bike rack.
Excellent quality product. This is my 2nd Rocky Mounts rack purchase, and I will continue to purchase their brand in the future.
This rack works perfectly for my hardtail mountain bike. Keeps the bike secure and stable at both high and low speeds.
Would highly recommend to anyone.
So easy and convenient - Holds any of my bikes secure with freeway driving on long excursions. Super easy to get into and get the bike on top of the rack - 3 contact points and locks. I even saw another guy with the same truck have one on his truck in town - compliments to the builders
I own two. I took one off and lost one of the metal pins that attaches to the mounting strap and can't seem to find them for sale anywhere. Great rack and would give it 5 stars but the arm is sometimes very stiff and hard to move.
Jenny N.
8/9/2022
You mentioned that you were looking for one the metal pins that attaches to the mounting strap. I checked and they only come with the straps. We have the replacement front mounting strap part # RKY1245.
This is a pretty okay roof tray. My main complaint is just how hard it is to swing the arm up and down. It seems VERY difficult. But it holds my bike well on longer drives so I guess that’s what is most important
Great service as usual from etrailer. Was a little disappointed with the rack, that it didn't come with the locks, can be ordered separate or transferred over. They could've suggested it in check out to buy "Rockymounts" could've just charged the couple of extra dollars and made the point moot. Still happy with the service. Thanks
Great rack, about to buy another one. Also bought a trailer hitch that we installed ourselves. In the process of purchasing a roof cage with bike mounts. Everything I have gotten off of the site is great. Had 2 hitches installed by you guys and everything works great. Definitely recommend.
Excellent rack! I needed a rack that was not fork mount due to my Cannondale Lefty mtb. This rack was perfect.
Very happy with the bike rack. Easy to assemble and put on the rack on the car. Like that it locks to the car rack and also locks the bike on. Easy to put the bike on and lock in place. Glad I made this purchase.
It’s such a good bike rack. Well made and sturdy.
work very good and happy
Great customer service
The people at etrailer are excellent in communicating and following up.
The Rocky Mount BrassKnuckles Roof Rack for Fat Bikes is well designed and came with comprehensive instructions. It fit my Thule aero blade racks wonderfully. My Motobecane Sturgis now sits proudly on my Volvo wagon. I have driven up to 60 MPH with my bike on the roof with no drama what so ever.
We had been struggling to find a way to haul our children's 20" wheel bikes when we go camping with our pop up camper. The popup camper we have has a tent top vs. fiberglass (Livin' Lite Quicksilver), so we could not mount rails on a top like some pop up campers do. We had tried using a bumper mount hitch for our pop up and using a hitch rack, but that put the weight distribution all out of wack. I had not considered using a roof rack given that I was not aware of the ones you could stand the bikes up and not remove the front tire. I also was not aware you could put kids 20" bikes up there. After slowly learning there were racks I could do this with I landed on the RockyMounts racks. I spoke to the manufacturer in Boulder and I was considering the Tomahawk model, but then I saw etrailer had the heavier duty Brass Knuckles model for 2 prices. One was the model for Fat Bikes and the other was not. I was confused why this model (for Fat Bikes) was less expensive and basically its an inventory thing at etrailer where they've put the adapter in the package vs. selling it separately. They are closing out the ones including the larger bracket and moving to having folks buy the fat tire bracket separately. I now have a Fat tire bracket if I ever get one of those bikes. The racks come with the narrower bracket installed though so certainly buy the fat tire version in any case as its less expensive. I also needed two racks and I was anticipating having to reverse the front tire ratchet bar for the drivers side, but to my amazement when I received the two in UPS there was a passenger side as well as one for the driver's side already with the ratchet bar on the drivers side as well! I don't know if they do this at etrailer in the warehouse as a good gesture when customers buy two of them or not. In any case it was nice not to have to have to do that step as we were going camping the same day. The kids bikes rode well on the roof of the 2013 Subaru Outback-I heard no rattles or wind noise problems. I'd recommend these racks to anyone trying to haul kids bikes as well as 29'rs, or conventional mountain bikes with standard tires! Really nice product and Michelle S was super amazing to get these racks out so we had them for our camping trip!
Excellent service from etrailer. Had to slightly modify rack arm to accommodate 27.5 x 4.5 w/ 150mm fork and studded tire, but I sort of expected that. The bike rack is sturdy and strong, I expect it to meet my needs. Thank you Rocky Mnt and etrailer!
I am very satisfied with the two RockyMounts BrassKnuckle racks I purchased from etrailer.com! Shipped quickly without damage. Easy to mount on crossbars, function as expected, fit and finish is top notch.
Note - I ordered the optional lock cores however the rack shipped with lock cores installed. Not an issue and I will return the extras that I ordered. I recommend checking if the lock cores are required before ordering separately.
I have a 29er Plus wheeled bike and needed to find a solid and secure roof rack to haul my rig to trails. I read reviews and settled on the RockyMounts BrassKnuckle roof rack. Mounting the rack to my Thule Aerobars was easy as could be with the simple instructions, tools, and hardware provided.
Great rack and great service as I have learned to rely on from etrailer. Thank you.
Excellent bike holder, as advertised! I had done a lot of research to find a good "tires on" fat tire roof rack, and all roads led back to this one. Haven't had it long, but it's obviously rock solid, and will no doubt handle my fattie addiction for many years to come.
It helped that etrailer has nice videos of all their features. helped me decide between this rack and the Tomahawk, which was a bit cheaper. Understanding that this one is easier to take off and move, and that it sits about an inch lower when not is use, sold me on going for the Brass Knuckles.
I purchases and have been using a Brassknuckles with my fat bike for a few months now and have been completely satisfied with the ease of use. I have it mounted on an aftermarket roof rack on top of my Chevy Cruze. Liked it so much I just purchased a second Brassknuckles rack so I can drive when riding with a buddy.
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Craig J.
11/9/2017
Still very happy and my previous review still applies. The rack has worked well and is very sturdy and I will continue to purchase the Rocky Mounts brand in the future.