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RockyMounts Gigawatt Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount
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RockyMounts Gigawatt Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount

Part Number: RKY37MR
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$959.99
Retail:$1,217.50
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In Use/Installed

This heavy-duty 2-bike rack is perfect for carrying electric bikes and bikes with fenders or carbon frames. Generous spacing between trays prevents bike-to-bike contact. Included ramp lets you roll your bikes onto the rack. Tilts with bikes loaded. 1-800-940-8924 to order RockyMounts hitch bike racks part number RKY37MR or order online at etrailer.com. Free expert support on all RockyMounts products. Great prices and Fastest Shipping for RockyMounts Gigawatt Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount. Hitch Bike Racks reviews from real customers.
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  • Reviews (7)
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  • Videos (25)
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RockyMounts Hitch Bike Racks - RKY37MR

Highlights

  • Carry Heavy E-Bikes with Ease: Holds up to 80 lbs per bike so even large e-bikes ride secure.
  • Load Without Lifting: 48" ramp lets you roll bikes on instead of hoisting them overhead.
  • Protect Carbon Frames & Fenders: Wheel-only clamps secure bikes without touching the frame.
  • Access Cargo Fast: Tilts with bikes loaded so you can reach your hatch or gear easily.
  • Keep Bikes Steady and Safe: Anti-rattle pin and keyed-alike locks cut wobble and deter theft.
  • Fit Big or Small Bikes: Handles tires up to 4.5", wheelbases to 55", and 20"–29" wheels.

Features to know about

Stable Hauling for Heavy Rides: 80 lb Capacity per Bike

Built for strength, the RockyMounts Gigawatt handles big builds without hesitation. Each tray supports up to 80 lbs, perfect for e-bikes, carbon frames, or bikes with fenders. The solid platform design keeps weight balanced while the anti-rattle hitch pin cuts down movement on the road. With room for two bikes and 15" between trays, it stays steady and prevents contact mile after mile.

Easy Loading with Included 48" Ramp

Lifting heavy bikes is no longer a chore. The included 48" ramp lets you roll each bike into place instead of wrestling it overhead. Once loaded, ratcheting hooks secure the front wheels while sliding rear wheel straps fit bikes with different wheelbases—up to 55" long and tires up to 4.5" wide. It’s a simple, secure way to get even the heaviest rides mounted fast.

Access Gear Without Unloading: Tilts with Bikes Loaded

Getting to your cargo doesn’t mean unloading your bikes. The Gigawatt’s front-mounted hand lever lets you tilt the rack down, even when fully loaded. Whether you’re reaching for a jacket or gear in back, one quick pull gives full access. When you’re done, it folds up neatly to stay out of the way until the next ride.

Locks Built In: Bikes and Rack Stay Secure

The Gigawatt keeps everything locked down. Keyed-alike locks secure both the bikes and the rack itself, so you can step away knowing your setup is protected. The aluminum frame with black powder coat finish adds durability and corrosion resistance for years of use.

Ready for Every Ride: Fits a Range of Bikes and Wheel Sizes

From compact 20" wheels to full 29" setups, this rack adapts easily. It weighs just 52 lbs yet carries the toughest loads with confidence. Whether you’re hauling electric, carbon, or heavy bikes, the Gigawatt delivers a strong, stable way to bring your rides along for every adventure.

Compatibility chart showing that the RockyMounts Gigawatt Bike Rack is approved for use on cars, trucks, SUVs, vans, fifth wheels, motorhomes, and flat-towed vehicles but not approved for travel trailers.

Specs

Application

  • Application: 2" x 2" trailer hitch receivers

Capacity

  • Carrying capacity: 2 bicycles
  • Weight capacity: 80 lbs per bike

Dimensions

  • Maximum tire width: 4.5"
  • Maximum bike wheelbase: 55"
  • Wheel diameter: 20" - 29"
  • Distance between bicycles: 15"
  • Ramp length: 48"

Weight

  • Weight: 52 lbs

Warranty

  • Limited lifetime warranty

10264 RockyMounts Giga Watt Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount

Installation Details RKY37MR Installation instructionsAlternate Instructions RKY37MR Installation instructions



Video of RockyMounts Gigawatt Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount
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Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for RockyMounts Gigawatt Bike Rack for 2 Bikes Review - 2023 Honda Passport - RKY37MR

Hey everyone, it's Evangeline right here at etrailer. Today we have the Rocky Mount GigaWatt Bike Rack. This is gonna be a heavy duty bike rack for your heavy electric bikes. We're gonna take a look at how it fits here on our 2023 Honda Passport. So the GigaWatt is, I think, a really good bike rack in terms of they make it a lot easier for you to get your bikes onto the rack, and once they're on there, you have a really sturdy fit. This is also a rack that includes a ramp, which is awesome.

I like the ramp. It's lightweight, it's sturdy, and while it does not store on the rack, it is pretty easy to keep inside your vehicle. Now, one of the other features that I like with this rack compared to other bike racks that also have similar features is that this has a really deep tilt-away. Now, the tilt-away feature, if you have two bikes loaded, might feel a little sketchy at first, but if you take it slow or if you have a second person to help you out, then it's worth it because then you're able to open up the hatch here on your Passport. So you can see here as the door opens so much clearance between the door, our pedals and our handlebars.

We're able to get in there, grab our waters, grab our helmets. If you're the type of person that likes to switch out your shoes before and after your ride, this is a perfect time and a way to do so all without having to take your bikes off, making it very convenient and you still get full use of your Passport while having a bike rack on. Now, when you lift it up, snaps into place and you're now ready to drive. So what types of bikes are you planning on carrying Because chances are the GigaWatt can carry it. It is technically a frame free contact bike rack, meaning you're holding onto the bike by the front wheel and the rear wheel.

You also have a bunch of different touch points here, so two straps on the wheels, and then you have a front hook. If you have fenders, you then put the hook further down and you have this extra strap so that it is also fender compatible. Now our rear wheel is a classic rocky mount style where you have this lever. We're gonna start by removing this strap and then we're gonna slide it out of the way. Being able to slide it like that also means this can accommodate for different wheel bases.

Coming over to the front, we're then gonna go set front hoop. Notice how this has a strap on that hoop, and then up front, we're then gonna hold onto the bike as we disengage this hook and push it out. Now I could use the ramp in this scenario, and if I did have a heavy bike up to 80 pounds by the way, that would be very helpful with how high the Passport sits. But I also would like to show you how this ramp tapers down. I like that design. It does make it a bit easier to get those bikes up. If you have, let's say a rear hub drive, you just get that front wheel up onto the rack and then you can go forward. That makes it a lot easier for those extra extra heavy electric bikes. And if that's still not enough, you just load that ramp on and you're able to ramp your bike up. Now I'm gonna put this bike over to this side so that we can take a closer look at the rack. Notice too those grooves on the inside of the tray. That's for your different tire widths. You have your thin road bike tires or your wide fat bike tires of up to 4.5 inches wide. The ramp just fits right onto the tray just like that and drops right down, making for a strong and sturdy fit. And it also mimics the grooves on your tray. Now when you're done and you're not taking your bikes out for a ride, I do recommend just putting everything back, put your straps back in, put your hooks back down, and that way everything is nice and neat and doesn't take up as much space. So how much space does the GigaWatt take up Well, if you measure from the Passport to the end of the bike rack, I have it sitting at about 36 inches, technically around 35-3/4 inches. So that's about three feet behind your vehicle. In the realm of bike racks, it's only slightly more than normal, but nothing crazy. Still something to remember if you have a small garage, or you need to park into a tight spots. The next measurement is ground clearance. So at the end of the rack to the ground, it's about 20-1/2 inches. Where this tapers up though, that's gonna be around 19 inches. So you can see there's a slight rise to get up and onto the rack. Where the trays sits though, that's going to be 22-1/2 inches. So if you're not a big fan of lifting your bike up about 22 inches, then I do recommend looking at that ramp. And if you wanna make this rack even more compact or if you're not planning on taking your bikes out just yet, let's lift this into the compact position. So with it sitting like this, measuring for closest point, that's gonna be the bumper to the bike rack. That's four inches. And the length this extend out, that's gonna be about 13 inches. Now your front hook may move around. So if that's gonna be the issue, I do recommend using that strap and securing your hook to the tray. That's just for extra peace of mind when you're driving around. You can also do the same thing with the rear wheel strap. But this is going to be what it looks like behind your car. You can see that it does taper down, so it looks a little wonky at first until you realize that that's the whole system. I do like how it doesn't sit too high up. We have full visibility through our window, of our taillights. Technically, our license plate and our backup camera are visible too with the camera sitting right up there. So with all that being said, if you have a two inch hitch receiver on your Passport, I definitely recommend checking out the GigaWatt. If you do not yet have a hitch receiver, you can find one custom fit for your Passport. We actually installed this one earlier today. So if you have heavy electric bikes and you're looking for something easy to use, easy the load, and has a ramp included, this is a great option for you. One other alternative would be the Yakima OnRamp LX. The main difference with that is that that ramp is attached to the rack, so you're less likely to lose it and forget it. But the Yakima OnRamp LX is a frame mount bike rack versus the GigaWatt where you have that easy to use front wheel hook. I much prefer this style, but they do have similar weight capacities. Check that one out here on our website if you're curious how that works. But for a solid, easy to use, high weight capacity bike rack. This was a look at the Rocky Mounts GigaWatts two electric bike rack on the 2022 Honda Passport.

Ratings & Reviews

5.0

7 reviews
Review sort icon
This heavy-duty 2-bike rack is perfect for carrying electric bikes and bikes with fenders or carbon frames. Generous spacing between trays prevents bike-to-bike contact. Included ramp lets you roll your bikes onto the rack. Tilts with bikes loaded.

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Very easy to use



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Very well constructed. What I had to put together was easy to assemble. When I put the tire holder on I used a clamp to bring the sides together and the bolts lined up perfectly. Bikes load up with ease. Highly recommend!!



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So far so good! Haven't tried it with the bikes yet. Easy installation. It's solid. Been driving with it on the car. No rattles or vibration. Easy tipping for back access to a Kia Sorento RV. Doesn't block back view or rear camera.

*Edit*
Wanted to add to my review of my RockyMounts Gigawatt Bike rack. Finally got to put the bikes on it and go. Love it. Solid as a rock. My wife who is 75 had both bikes on and tied down in less than 10 minutes. Love the rack!

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

9/2/2025

You wife may be faster than Speed Racer! I'm glad getting the bikes on the rack is so easy, and fast. Do you and your wife do a lot of biking locally or do you do any traveling with the bikes?

Jack profile picture

Jack

9/2/2025

@GwendolynYWe do a lot of local riding and places within 50 or so miles. Traveled to Jekyll Island which is about 100 miles. Looking forward to doing it with our new rack. Our old rack worked, but was a pain to use. So far very happy with this rack!
Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

9/6/2025

@Jack I checked out Jekyll Island and it looks like it was worth the drive! I've really have only visited Atlanta, but you have perked my interest in Jekyll Island.
Jack profile picture

Jack

9/6/2025

@Gwendolyn It's a little pricy, but it is worth it. A lot of bike trails. Great beaches! We usually stay for a couple of days. Great times the few times we have gone. You will have a great time if you go!
See All (4) Replies to Gwendolyn Y. ∨

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See what our Experts say about this RockyMounts Hitch Bike Racks

  • Will RockyMounts Gigawatt Bike Rack Work with Aventon Bike with Front Fender
    Thanks for reaching out about this, Steve! Our video team currently has the RockyMounts Gigawatt Bike Rack # RKY37MR on their list to get a video made for. I don't have a timeline of when it will get completed and posted, but stay tuned and hopefully it will be posted sooner rather than later! UPDATE: The video is now live and ready to view! I'm linking it to this answer page for you to check out!
    view full answer...
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  • Best Way to Store Ramps on Rocky Mounts Gigawatt Bike Rack
    Hi Anne! At this time, there isn't a more elegant solution. The ramp of the RockyMounts Gigawatt Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount # RKY37MR is not designed to stay on the rack, so typically it's stored inside the vehicle to prevent loss or theft and that's truly going to be the best option. You could use something like Yakima Cinch Straps w/ Padded Cam Buckles - 16' Long - Qty 2 # Y05006, but with that you're running the risk of them being lost on the road and having to...
    view full answer...
  • Does the RockyMounts Gigawatt Bike Rack RKY37MR Work w/ a Tern Quick Haul Cargo E-Bike?
    Yes, it will! The RockyMounts Gigawatt Bike Rack for 2 Bikes item # RKY37MR has an 80 lbs per bike capacity and works with tires as small as 20". The placement of your front fender will not interfere with the locking clamp. The Gigawatt Bike Rack item # RKY37MR mounts to a 2" receiver and weighs only 52 lbs. It is compatible with all motor vehicles, motorhomes, 5th wheel trailers, and flat towed vehicles. It is not rated to be used behind a travel trailer. I have linked a review video...
    view full answer...
  • Can The RockyMounts Extender RKY10011 Be Used With A RockyMounts Gigawatt Bike Rack?
    Hi James! The RockyMounts Hitch Extender LS w/ Hitch Pin and Lock - 2" Hitches - 8" Long # RKY10011 can indeed be used with the RockyMounts Gigawatt Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount # RKY37MR. Just be aware that using an extender like this, even with its anti-rattle locking hitch pin, it will cut the carrying capacity of your hitch in half. With that said, I would not use bikes over 40 pounds when using it to keep everything safe. What kind of bikes are you wanting to...
    view full answer...

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