- Parts & Accessories
With cargo space in cars precious and the more complexity in removing front wheels with thru-axles, many riders and opting for “Wheels-On” bike mounts. The BrassKnuckles takes these racks to the next level. Simply raise the arm, ratchet down against the fork/front wheel, secure the wheel straps and drive away with confidence. Besides the ease of use, it folds perfectly flat for a quiet, fuel efficient drive when there is no bike on the rack. Your carbon road bike or 29” trail bike will be in good hands with BrassKnuckles.
Brass Knuckles fits Thule®, Yakima®, and all factory installed crossbars.
- Non-corrosive Aluminum construction
- Form-fitting mounting hardware fits all crossbars (Ouray, Thule®, Yakima®, Aeroblade®, Whispbar®, Rhino Rack®, and factory
- Ergonomic BrassKnuckles handle fits your hand like a glove
- No bike frame contact
- Easy installation and adjustment
- Fits all bikes 20" - 29" wheels (except with front fender)
- Optional 2-pack locks (sold separately) lock rack to car, bike to rack
- Available in 3 color options: Black, Red, and White
- For a full list of features, click here.
- RockyMounts offers a Lifetime Warranty on all of our products.
Click here for BrassKnuckles user's manual.
What’s the difference between the BrassKuckles and Tomahawk?
The BrassKnuckles is our premier upright roof rack and is the most streamline rack in its class. It features a more ergonomic design, an aerodynamic low profile when stowed, higher quality components, multiple finish options and a strap mounting system to make taking it on and off your vehicle a breeze. The TomaHawk’s function is the same and will secure your bike just as well but has been designed with the cost conscious buyer in mind so you lose some of those killer features.
I have a road bike and a mountain bike with a thru axle, will they both fit on this rack?
Yes, the BrassKnuckles secures the bike by clamping onto the front wheel so nearly all bikes with a 20"-29+ tire will fit.
Are the knuckles removable in case i get into a fight.
No, call 911.
Do the knuckles do anything?
Yes, you can get your fingers in and it makes pulling the arm down easier. Also, no one will mess with you.
Does it fit fat bikes?
You need to purchase the Fattie adapter ($19.95) and it will. It will fit up to 3” tires without the Fattie adapter kit.
Will it carry my 27+ bike with a 3” tire?
Yes. It will fit skinny road tires all the way up to 29+ tires. You can the Fattie adapter kit separately to fit up to 5" tires.
Will it carry my kids bike?
It will fit down to a 20" tire and up to a 29+ tire.
Will this securely hold my bike?
Yes. the arm snugs down against the front wheel/fork and is rock solid.
The Tomahawk fits fat bikes and is cheaper, why would I not get that?
Designing a rack for fat bikes makes everything bigger and leads to a few compromises. 98% of people do not have fat bikes, so we wanted to make the best rack for them.
Can I mount it in the slot of my Thule® AeroBlade or Yakima® Streamline bar?
Yes & No. The mounting brackets on the front are form fitting and really clean. You can replace the rear bracket and mount this in the slot for about $5 for a plate and bolt.
The straps that hold it on look like they are rubber, will that be strong?
Yes, we use two stainless steel bands with a rubber coating, sleep tight.
I have a front fender on the bike, will this work?
No, unless you remove the front fender.
On the Thule® SideArm, there is no front wheel strap, and there is one on the BrassKnuckles, why?
In testing, side winds can lift the bike out of the tray. 99% of the time, you do not need a front wheel strap. In extreme side winds, you do need it. For safety, always use the front wheel strap.
Are the models that grab the bike by the tire better than the ones that grab the frame.
- Yes, the ones that grab the frame are harder to use, interfere with bottle cages and can damage some thin walled tube bikes.