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

Code: RKY10004

236 reviews

Our Price: $499.95


Product Specs:

Hitch Bike Racks

Platform Rack

Tilt-Away Rack
Fold-Up Rack

Carbon Fiber Bikes
Heavy Bikes

Fits 2 Inch Hitch

Class 3

Wheel Mount

Bike and Hitch Lock

2 Bikes


This lightweight, 2-bike rack is perfect for carrying e-bikes, fat bikes, or bikes with a carbon frame or custom paint job. There is also a 1-bike add-on available if you want to take an additional riding partner to the trailhead.

Video of RockyMounts MonoRail Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount

Customer Satisfaction Score:

Customer Reviews

RockyMounts MonoRail Bike Rack for 2 Bikes - 2" Hitches - Wheel Mount - RKY10004

Average Customer Rating:  4.8 out of 5 stars   (236 Customer Reviews)

This lightweight, 2-bike rack is perfect for carrying e-bikes, fat bikes, or bikes with a carbon frame or custom paint job. There is also a 1-bike add-on available if you want to take an additional riding partner to the trailhead.

by: Mark-Indianapolis05/09/2021

This thing is rock solid. Once I figured out the directions and put it on my 2020 Jeep Grand Cherokee is was so impressed with how stable it was. With two hybrid bikes on the platform rack it didn't even wiggle in the slightest! The only negative comment I can make was in lack of information in the directions. I had the platforms backwards and didn't know it until I tried to fold the rack completely up. I reviewed the directions again and no mention or illustration is available. However the fix wasn't that hard and it now functions exactly like the videos. Customer service from etrailer was remarkable though both times I called I thought the wait time was a little long. I would recommend this product and this retailer to anyone. Great service, great product!

Have had this product for a year now and I stand by my earlier review. By far one of the best if not the best bike rack on the market. We drove from Indianapolis to Upstate New York last fall and the rack performed great. Would recommend this product to anyone.
Mark-Indianapolis - 05/10/2022

by: Allen05/18/2021

It was very easy to assemble the MonoRail 2. All of the parts were in the box and nothing was damaged. I would recommend etrailer to purchase from as they were the only ones to have this bike rack. Also I would recommend the MonoRail as well.

I really like the Rockymounts Monorail 2 but I also have a slight problem with it as well. But the problem that I have is going to go will all hitch type racks. The problem that I have is with the backup sensors so I bought the 53201 Curt Auxiliary LED Indicator Lights and some magnets top attach it to the rack. If I were to say anything is that I think all bike racks should come with something to plug to prevent the sensors from going off. there then that the rack is gray and I have had no problems with it at all. This is a great rack for the money.
Allen - 05/19/2022

by: Al04/21/2021

Very well made. Much easier to load bikes than the hanging rack we used before.

After using our bike rack all last summer and fall have not had any issues with it. Very satisfied. Ease of use, keeps our bikes very stable and especially like can it down with bikes loaded and still access the truck bed. Would definitely recommend. Would buy again.
Al - 04/22/2022

by: David04/19/2022

The rack came damaged and could not be assemble without first repairing the damage. The mounting bracket for one of the cross arms was bent (see photo) which prevented the cross arm from being installed. The bend had to be hammer out straight before the cross arm could be installed, which also cause the area of repair to need repainting.

Otherwise, the rack appears to be functional and well built.

The website specs for the rack list its weight as 38 pounds, but the actual weight is 45 pounds.

by: George05/01/2022

At age 75, I have purchased many bike racks over the years…..this one has no equal in loading and unloading…

by: Rob12/24/2021

I ordered it for my girlfriend and she HAD to use it the 2nd day because she was so excited. It wasn't hard to build, there were only 3 main pieces but 5 total and the tools come with the kit. Her first test go went great, she was extremely happy with it and that she could finally get into the trunk of her SUV with the bikes still on the bike. Only concern is the locking mechanisms, they are cheap so I'll find a better way to lock the rack and bikes to the vehicle. Otherwise, as always,thanks for the great service etrailer. I would purchase again if needed!

by: Leslie 09/03/2022

We have been using the rockymounts bike rack for a year now for our two ebikes and it was a good choice for us. It’s easy to put on and take off the various vehicles we use, comes with locking accessories. For me it’s easier to load the bikes when the rack is tilted down (I’m 70 and not that tall and those e-bikes are heavy!) then I just push them to the correct level position to drive. I highly recommend this rack.

by: Rick02/13/2018

Well built, solid bike rack. Like the additional strap extensions for fat bikes. Holds bike well. Only minor issue was that instructions did not reference the rear wheel straps, but easy to figure out. I like that the rack tilt allows access to the rear hatch of my Subaru Forester.

working out great. Had issue with partial melt of one of the shepards hook melting due to proximity to my car exhaust. Able to get new part from manufacturer, repositioned hook, and all has been well since
Rick - 02/13/2019

by: Ray09/15/2021

Easy assembly. Since this is made here in Colorado (USA), the assembly tools provided actually fit the bolts and work as intended. My only issue is even with bikes off the rack you can not open the tail gate on a jeep. Will need to completely remove rack from hitch to do so. Bike mounting is easy although the supplied locks feel a little flimsy.

by: Scott12/06/2022

Very easy to assemble and to mount the bikes. Bought the rack to transport bikes to FL for the winter and took a short highway test drive to see how the rack reacted. Very stable and no noticeable shifting/movement of the bikes. So far so good - I think it should be fine for my 1,500 mile trip.

by: Bill 01/31/2023

I have used this 2 bike rack for a year on the back of a camper and so fr it has held up great. My only wish list is the rack sits 10 inches higher than the hitch which makes lifting an ebike more difficult.

by: Clark05/07/2021

Easy to assemble nice quality. Bikes are very solid on rack.

Great bike rack. Works well for both fat bikes and skinny tired bikes. It is a bit tight on fat bike 27.5 tires. Wish the uprights were an inch longer.
Clark - 05/08/2022

by: Dan M06/16/2018

Exceptionally solid hitch mount / tray platform type bicycle carrier. I
The instructions were very clear and complete - with one exception of the the tray straps and strap extenders (not shown/mentioned). Some basic assembly was required - again the directions were very clear and everything need was supplied in the package. I took my time and it only took 15 minutes.
The bike rack is outstanding in design, quality of materials, construction and function. It's very solid in all 3 positions (carrying bikes, laid 'down' to open the tailgate, and 'stowed' in the up/close position when not carrying bikes.
I've had bike racks from other 'big name' vendors - this Rocky Mounts rack is much better, and less expensive.

by: James 01/24/2023

Best bike rack for the money.
Used to
take 1 ebike and regular bike to Florida from Wisconsin and all around the Midwest area love it

by: Ralph 03/09/2023

Works great and it’s simple to put on and take off of the vehicle. It’s seems to be well made and keeps the bikes stable while on the road. Having a locking cable is a plus too.

by: John 12/02/2022

Very sturdy rack for 2e-bikes. Had to adjust fenders on bikes though. Over 2400 miles usage. No problems. was looking for turn signal and brake light combo for rack. No package available. Went to harbor freight and installed theirs.

by: Nancy 11/19/2022

Love this rack, easy to use. I always have my bike loaded quicker than others with more expensive racks.

by: Daniel03/22/2022

This rack is Rock Solid!! I live in Michigan and we travel to the Smoky Mountains for a week every September, since buying this rack we are now able to bring our bikes along with us. It works like a champ!! Not one issue with it going there or coming back, we've used it to go to some Metroparks to ride there as well. I have a Ram 2500 pickup and the tilt feature on the rack allows me to completely open my tailgate without hitting the rack or the bikes! It's a great rack and I would highly recommend it to anyone looking for a quality rack.

by: Sue06/30/2020

I ordered a tilting Rocky Mount bike rack from After receiving notification of the ship date of the bike rack, I realized that the product wasn’t going to arrive until after a bike trip I had planned, I spoke to Jenny, a representative from She worked with me in selecting another model that would be available and arrive in time for my trip. I am impressed by the professionalism and service excellence I received from my phone experience at

by: mark08/10/2020

The rack took almost 2 months to arrive due to backorder issues. However,we were pleased with the easy assembly. We have used several times and are comfortable with the rack. We are planning a trip with our grandson and will let him help assemble the addon so we can carry his bike as well.

by: Mary 09/09/2022

This is a very good product and does what it is supposed to do- carry my heavy ebike safely. Not too difficult to put together. I wish there was a little ramp - but I’m not sure any rack has one at this doable price. I feel this was a great purchase

by: Steven09/21/2022

Works well. Originally came missing one or the split washers although both e trailer and Rocky Mountain were helpful. No issues otherwise.

by: Robyn 09/03/2022

Great bike rack! Well worth the money for securing bikes on the long RV treks around the country. The only negative is that arms that grab the tire tend to rub against the frame and take off paint when traveling so far.

by: Jan 09/03/2022

excellent rack. very easy to use. only problem is lock location on back of rack but really a small issue. Install was a snap and removal quick and easy.

by: Frank04/21/2021

The hitch went on well. Both bikes fit and are secure. Great follow up from etrailer.

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Customers compare RKY10004 to these similar products

Ask the Experts about this RockyMounts Hitch Bike Racks
Do you have a question about this Hitch Bike Racks?

  • Comparing the RockyMounts MonoRail vs. RockyMounts SplitRail Bike Racks
  • Both the RockyMounts MonoRail Bike Rack # RKY10004 and the RockyMounts SplitRail LS Bike Rack # RKY11404 would be a great option for your 50lb. E-Mountain bikes. They are going to feature a lot of the same features with a few slight differences. First I will tell you what they both have, then point out the differences and provide you with my recommendation. Both of these racks have a 60 lb. per bike capacity, so they will be compatible with your 50 lb. bikes. They will both feature a...
    view full answer...

  • Best Mid-Range Platform Wheel Mount Bike Rack with Locks
  • The RockyMounts MonoRail # RKY10004 is a solid choice for a bike rack and I'd go with it over the Curt Bike Rack # C89JR (the same as 18088) any day of the week. Curt isn't a huge bike rack manufacturer so I'm not very confident in their recreational products to be honest - when it comes to towing though, Curt is right at the top with others. In regards to bikes wobbling this shouldn't be the case if they were installed properly. You might see the bike rack wobble some during travel but...
    view full answer...

  • Difference Between RockyMounts Monorail Bike Racks
  • The RockyMount Monorail listed as part # RKY10005 is actually an additional rail for the RockyMount Monorail 2 Bike Platform Rack, part # RKY10004. The addon, part # RKY10005 cannot be used on its own and must be installed onto the Monorail Rack, part # RKY10004.
    view full answer...

  • Comparing the RockyMounts MonoRail Part # RKY10004 to the Thule Helium Aero Part TH9042
  • The RockyMounts MonoRail 2 Bike Platform Rack part # RKY10004 is a platform style bike rack that holds the bikes by the wheels and the Thule Helium Aero 2 Bike Rack part TH9042 is a hanging style rack that holds the bikes by the frame. A platform rack will be easier to load/unload the bikes as you don't have to lift them up as high. Another very important distinction to may when comparing a platform and hanging style bike rack is the use of an adapter bar. If you have an alternative...
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Saris SuperClamp EX Bike Rack for 2 Bikes - 1-1/4" and 2" Hitches - Wheel Mount

Code: SA4025F

111 reviews

Our Price: $579.99


Product Specs:

Hitch Bike Racks

Platform Rack

Fold-Up Rack
Tilt-Away Rack

Carbon Fiber Bikes
Electric Bikes
Heavy Bikes

Fits 1-1/4 Inch Hitch
Fits 2 Inch Hitch
Fits 1-1/4 and 2 Inch Hitch

Class 1 - 3 Compatible

Wheel Mount

Bike and Hitch Lock

2 Bikes


This lightweight, platform-style carrier holds 2 bikes by the wheels with ratcheting hooks and sliding wheel trays. The rack tilts down with bikes loaded for cargo area access and folds up for storage. Includes hitch and bike locks.

Video of Saris SuperClamp EX Bike Rack for 2 Bikes - 1-1/4" and 2" Hitches - Wheel Mount

Customer Satisfaction Score:

Customer Reviews

Saris SuperClamp EX Bike Rack for 2 Bikes - 1-1/4" and 2" Hitches - Wheel Mount - SA4025F

Average Customer Rating:  4.7 out of 5 stars   (111 Customer Reviews)

This lightweight, platform-style carrier holds 2 bikes by the wheels with ratcheting hooks and sliding wheel trays. The rack tilts down with bikes loaded for cargo area access and folds up for storage. Includes hitch and bike locks.

by: Michael11/24/2022

I am happy with the bike rack, especially at the price. I am very very happy with the service I got at etrailer. The trick is to keep asking questions because they got the answers. It did take a couple extra tools to put it together that I had. The big drawback for me is the bar that cinches the wheels sticks out too far because of my fenders. I haven’t decided whether I want to cut the fender down, or figure out different way to secure the bike. I was really impressed with the steel cables to secure the bikes. I was a little leery on whether a thief could just take a couple bolts off and defeat the whole locking security systems? I’m still working on that too.

by: Jennifer 03/03/2023

I am pleased with this bike rack. I bought it for my eBike so I could transport it to trails around my state. It is light weight and easy for me to put on and take off. The clamps must be placed at 10:00 and 2:00 like directions recommend, to avoid bouncing. If placed differently such as 11 and 1, the rack has more bounce.
I transported bikes to FL and back without issues and feel I got a good rack for a good price.

by: Mark 09/21/2022

I love the Saris Superclamp EX bike rack…so quick and easy to transport two bikes without any hassle’s. With a little more added modifications to security (on my part), I made it nearly impossible for my 6,000 dollar bikes to be stolen faster off the Saris bike rack itself and also with the receiver, so a lot of hard work and noise has to be made from Potential bike thieves (like from there cutting tools). It’s mostly for the purpose of when I have to leave my bikes for short time periods like stopping to eat at a restaurant ect. I also love how it folds more compact to my car when stowed till needed again later for my bike rides.

by: Stephanie A07/14/2022

At the age of 70, I needed a “friendlier” mounting and bike access rack. A platform rack seemed to be the solution. I had one caveat. My Subaru Forester had a 1and 1/4” receiver (with a non-standard 3/4” length mounting hole). My Volvo had a tuck away 2” receiver. After some research I gravitated toward Thule only to find out they had no solution for my above conundrum. In fact their customer service offered no interest in solving my problem which others also must have had. More research…enter Saris! An American made company with an innovative solution. I quickly received my SuperClamp EX-2 from ETrailer along with excellent customer service support. The ease of constructing the unit for use and the obvious structural integrity was immediately apparent. My wife couldn’t believe how easy it was to use and to stow away on my garage wall after use. Thank you Saris and ETrailer for a wonderful product and experience. I guess American made is still alive and well. I highly recommend this product and the associated companies.

by: Joseph05/17/2021

I purchased both the Saris bike rack and Eco hitch from Greg and his team. If it wasn't for the great video from etrailer, it would have been a nightmare. But the video was a great help. The hitch installed in about 2 hrs and the assembly of the Saris rack took only about 20 minutes. The Saris rack feels solid and easy to use. The re-trackable safety cords a bit short but they'll do the trick. I'm very happy with the service I was provided, along with the videos that were available. I'm a happy customer.

by: Paul05/16/2022

Overall, I have been very happy with this rack. I originally bought it for use with a 2018 Honda CRV and have since transferred the rack to a 2021 Toyota 4-Runner. The rack works well with both vehicles. My normal load is one mountain bike and one e-bike and it handles the heavier e-bike quite well. The only complaint I have is the straps used to secure the tires tend to flop over the tire trays and impede the loading of the bikes. One must thread the straps through the lower infrastructure of the bikes before loading the bike. The only other minor issue I have had is the lifting/pealing of the reflective tape placed on the tire trays for the rear bike.

by: Olivia01/19/2022

Product seems to work well, but I have a few issues I would like to note:
The rack, loaded with 1 or 2 bikes has a lot of movement from side to side. It makes me worry about how it will wear over the long run.
Wheel crab does not function with a bike that has a fender.
Doesn't allow two small e-bikes to be mounted.

A stabilizing strap like Item # 18050
Curt Cam Buckle Stabilizing Strap for Hitch-Mounted Accessories - 61" x 1" - Qty 1
will help with the sway. If your e- tires are wider than 4.5 inches then you will need item # SA4419
Fat Tire Adapter Kit for Saris Freedom Bike Racks
adapter. The bikes are pretty close together once on, so make sure that you are facing the front of one bike to the right and the front of the other bike to the left to get the best fit.
-- Etrailer Expert Sierra K - 01/21/2022

by: Gordy05/12/2022

An excellent rack. I needed something really robust as I occasionally transport my 65-lb Ebike, and I needed security features for my high end racing and touring bikes. This rack checked both of those boxes. I am very happy with this purchase.

by: LizzyO02/16/2015

Love this bike rack! It is super simple to use and accommodates both mine and my husband's bike. I can easily install it by myself (I'm small, 5' 120lbs) and load the bikes on without any help. The bikes feel very sturdy. I like that I can still open the hatch (with the bikes off). Would highly recommend!

by: Philippe 11/27/2022

very nice product easy to install and perfect for my 44 pounds bike !
it is secured compared to other bike racks.

by: Rich L06/21/2017

Best bike rack I've ever owned. Works perfect with our carbon fiber as the design of this rack is 100% touchless! Secure and sturdy.

by: Sam 01/19/2022

Just what I wanted--a rack that required me to lift my bike just a leeeeetle bit off the ground. I bought this particular one because in a few years I'll need to have an e-bike, and it is one of the few that can carry the extra weight of an e-bike. The straps are easy. The tilt is great. Thrilled with this purchase.

by: Manuel08/09/2020

Love this hitch, easy to use, great quality! The folding option when not in use is very convenient and the tilt away makes its easy to use the truck bed.

by: Ross10/08/2022

This rack doesn't work with Lectric bikes and etrailer won't let us return it. We've tried to sell it but no one wants it so now we're stuck with a $[XX] rack we can't use....

by: George02/07/2022

High quality! Easy assembly

Great! Well made and easy to use. Good value!
George P - 02/08/2023

by: John 01/20/2022

Very happy with the SuperClamp bike rack. Once adjusted to the bikes it holds them securely.

by: Jo05/01/2022

I had a couple issues when I received my trailer, since it had actually been assembled wrong. We were able to make the fix pretty simply, and since, I’ve been loving this trailer. It’s easy to load my ebike, and I’m a short, middle aged woman. And the thing feels super secure. I don’t worry about the bikes flopping or bouncing. It’s not hard to put on and take off, but I pretty much leave it on the car all season. It really makes it more fun to take short trips away for riding when it’s not a hassle to rack the bikes.

by: Brian J.01/03/2019

I've only used the rack once so far, but I really like it. I used it on a 29er carbon mountain bike. Part of the trip was on a dirt road and also on rough and curvy paved roads. There is some play to the rack (from the hinge point of the rack), but it was quiet, and I don't recall ever hearing it. Nor did it look at any time like my bike was getting shaken to death. To be clear, the attachment of the rack to the hitch is rock solid.

One of the things I really like this rack, and why I chose it over others, is that the integrated bike lock is a pretty beefy cable, and more importantly, it allows me to lock up both wheels and the frame. Many of the integrated locks on other racks only lock up the frame or one wheel, maybe a frame and one wheel, but not all three. I haven't tested the locks trying to lock up the frame and both wheels on two bikes, but it definitely works for one bike.

This rack doesn't fold up as flat as other racks that I've seen, but the security was more important to me.

All in all, I'm really happy with the rack so far. It seems well made and everything moves and operates smoothly.

After a year, I still really love this rack. Ive had my bike on it on some pretty rough roads and it worked great. Not too long ago I got rear ended by a semi not hard and the rack got bent up a bit. The guy who hit me ended up paying for a new rack, which gave me the opportunity to get something different but I replaced it with the same one. So yeah, Id buy it again.
Brian J - 01/04/2020

by: Beth H09/07/2022

This is a great bike rack. It is very easy to load my bike and my bike is super secured. It also provides the lock feature so I can park my car with the bike locked and go shopping or dinning. I love it!

by: Don03/02/2019

I purchased this rack because It stated it would support the weight of my 2 electric bikes. The first trip with the rack installed on our motor home it failed after crossing a railroad crossing at 25 mph. The manufacturer told me to read the small print on the rack where it says not for use on any RV. They charged over a $100 for parts to repair it. Using the rack on my jeep or the motor home shouldn't matter. In my opinion the rack is under designed to carry the weight of the bikes as advertised.
In good conscience I can not recommend this rack.

The reason Saris does not recommend using this rack on a motorhome is the extended rear overhang distance between rear axle and rear bumper typically found on motorhomes. This subjects any hitch mounted accessory to greater jarring and bouncing that would be experienced if the rack were used on the rear of a regular passenger vehicle. This extra bouncing exerts forces on the rack that it wasnt designed to withstand. Remember riding in the back seat of the school bus when it went over a big bump when you were a kid? Same principle. We do show in the product description above that the rack is not recommended on motorhomes or towed trailers.
-- Etrailer Expert Mike L - 03/04/2019

by: Lisa 07/04/2022

Great bike rack for a great price

by: Richard05/29/2022

Great fit & went together in less than 30 minutes out of box!
Adjusted ebikes easily. Sturdy, well made in America. etrailer’s comments & information about the product was excellent! Perfect fit for our Prius.

by: Grant09/18/2022

Excellent, easy to use, can hold weight of an ebike, note compatible with some front fender configurations

by: John W04/14/2022

I just bought the bike carrier. It seems to be as advertised. My bikes fit well in the rack. However, the fenders interfere slightly with the clamps.

by: Peter 06/28/2021

Had this Saris Bike rack for a year now. Made two long Highway trips with no problems. Rack is very well made. Bikes seem very secure - more so than the hanging types of racks. Very easy to load bikes on/off. Would recommend getting a garage wall mount so yo have someplace to store it when not in use.

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Customers compare SA4025F to these similar products

Ask the Experts about this Saris Hitch Bike Racks
Do you have a question about this Hitch Bike Racks?

  • Recommended Hitch Mount Bike Racks to Deter Theft
  • So sorry your bike was stolen! The Saris SuperClamp EX # SA4025F would be my choice because of the integrated stainless steel cable lock. It will secure your bike to the rack to deter theft. The Yakima HoldUp # Y02443 (see Yakima video at the 2:09 mark) and Thule T2 XTR Pro # TH69TX platform bike racks are quite nice too. In addition to any of these bike racks, I recommend getting a cable lock # e98891. The lock can secure the bike and possibly the rack to the safety chain loops...
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