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Rhino-Rack Bike Frame Adapter Bar for Women's and Alternative Frame Bikes

Rhino-Rack Bike Frame Adapter Bar for Women's and Alternative Frame Bikes

Item # RRRBCA021
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Adapter lets you carry a woman's, child's, or alternative frame bicycle on your single- or dual-arm bike rack. Bar telescopes from 23" to 29" long. Easy-to-use collars secure your bike at the handlebars and seat post. 1-800-940-8924 to order Rhino Rack accessories and parts part number RRRBCA021 or order online at Free expert support on all Rhino Rack products. Great prices and Fastest Shipping for Rhino-Rack Bike Frame Adapter Bar for Women's and Alternative Frame Bikes. Accessories and Parts reviews from real customers.
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Rhino Rack Accessories and Parts - RRRBCA021

  • Hitch Bike Racks
  • Spare Tire Bike Racks
  • Trunk Bike Racks
  • Adapter Bar
  • Frame
  • Rhino Rack
  • 23 - 29 Inch Long

Adapter lets you carry a woman's, child's, or alternative frame bicycle on your single- or dual-arm bike rack. Bar telescopes from 23" to 29" long. Easy-to-use collars secure your bike at the handlebars and seat post.


  • Adapter allows for safe, level transport of a woman's, child's, or full-suspension bike on a hanging-style bike rack
    • Provides attachment point for bike rack
  • Telescoping tube adjusts to fit a variety of bicycle sizes
  • Plastic collars clamp around your bike's seat post and handlebar stem post
    • Open and close with simple, push-to-operate tabs
    • Won't mark your bike's finish
  • Sturdy, rust-resistant steel with black powder coat finish


  • Carrying capacity: 1 bicycle
  • Adapter length: 23" - 29"
  • Maximum bike dimensions:
    • Head stem diameter: 2"
    • Seat tube diameter: 1-3/16"
  • Weight capaticy: 33 lbs
  • 3-Year limited warranty

Bike Frame Adapter for Hanging-Style Carriers

Rhino Rack Adapter for Bike Frames

If you have a bicycle with an irregular frame - such as a woman's, child's, or full-suspension bike - you may need a bike adapter bar to carry your bike on a single- or dual-arm, hanging-style bike rack. This adapter bar creates a horizontal mounting point that ensures your bike will hang level on the rack for safe transport.

Telescoping Tube and Easy-To-Use Collars

Rhino Rack Bike Frame Adapter

This adapter telescopes from 23" to 29" long. The ends of the telescoping tube have plastic collars that clamp around your bike's seat post and handlebar stem post. To open a collar, push down on the tab and slide it open.

Rhino Rack Frame Adapter Clamped Bike

Place the collar around your bike frame and slide it back into place until it secures with an audible click. These plastic collars help protect your bike from scratches. And the black powder coated steel construction resists rust.

RBCA021 Rhino Rack Bike Frame Adapter Bar for Ladies' and Kids' Bikes

Installation Details RRRBCA021 Installation instructions

Customer Satisfaction Score:

Customer Reviews

Rhino-Rack Bike Frame Adapter Bar for Women's and Alternative Frame Bikes - RRRBCA021

Average Customer Rating:  4.7 out of 5 stars   (165 Customer Reviews)

Adapter lets you carry a woman's, child's, or alternative frame bicycle on your single- or dual-arm bike rack. Bar telescopes from 23" to 29" long. Easy-to-use collars secure your bike at the handlebars and seat post.


Picked this up for my daughter when she moved away so that she can always have her bike with her. This makes it so easy for her to attache her bike to the rack on the back of her car.


This easy device made my life a lot easier. Carrying 2 ladies bikes on my bike carrier was a bit difficult. this adapter helped keep the bikes level during transport. I recommend buying this device.


I have a difficult car fit for a rear bike rack. etrailer is where I found the only option. The Yakima instructions were horrible, but I figured it out. That said, etrailer is great - I loved seeing who handled my order, quick delivery, great communication. I had to return one thing, and that was a breeze too. I highly recommend


The Rhino-Rack is well made and makes loading a woman's bike easier. It fits well with this rack.


Easy people to work with. Very knowledgeable of their products and helpful in ordering process. Shipping was fast and product arrived undamaged. Will order again if the need arises.


Easy to use, works great to be able to use my bike rack for my full suspension bike. Very solid construction, inspires confidence.


Well made. I purchased this for a Rad City ebike.


Easy to use and fits great with my bike rack.


Very pleased with overall experience dealing with customer representative Wayne. Placed my order and asked a number of questions regarding the Thule rack that I wished to purchase. All questions were answered in a highly professional way. Received a quick delivery of product in 3 days although a 4 day window was given. Very happy with my purchase. Have not used the rack yet, but feel content that it was a good choice. Will get back to you in future after using rack, and hope to be able to give a good review along with some photo's. Thanks again, Wayne and E-Trailer.

George E.


Have been using the Thule Rhino Rack to transport my wife and grandchildrens bicycles over the past year and find product very easy to install and does just what it is intended to do very well. Keeps bikes stable and level while transporting. Good product. George E.


This was part of my third order from We needed something to make carrying my wife's bike easier. Shipment arrived this morning along with the rack. This is extremely well made and should last a lone time. This makes carrying a girls bike really easy. Have already installed rack and bikes on RV and took it for a test drive. Perfect!!! Would recommend the adaptor bar over similar products I looked at locally.

Les L.


After my last review we went on a 7000 mile RV trip through 9 states which lasted 27 days. The rack and bar were great. At night all we had to do was easily remove the bikes and lower the rack out of the way for access to RV storage if needed. I would periodically check the bikes and all were really secured. Getting ready for another trip 0f 5000 miles. Don’t have to worry about our bikes.I had previously purchased a hitch mounted motorcycle carrier which has been used on a3500 mile trip. Performed great. No problem in loading or unloading our scooter. Thanks for great products.


The reason I chose this rack is we have (2) 75 pound ebikes that needed a very strong rack. This rack works great once I figured out how to space the bikes properly. Very strong and sturdy. I just fold down the center post and load the first bike, raise it and load bike 2. The frame bar adapters work well with these bikes.

We travel in a motorhome and tow a pickup truck . Something I don’t understand is this rack is not recommended for use on a towed vehicle.

What is the difference between driving a vehicle with the bike rack and towing the vehicle as far as the use of the rack?

Thanks You


Bought it for my wife's new, as yet undelivered, bike. I've used these before and this one looks very heavy duty and I expect it'll provide excellent service. The fit and finish are well done. The ends that will attach to the bike appear to have a very robust material coating that will protect the bike's finish when used. I expect the adapter bar will work very well and provide years of service with little maintenance required, if any.



The adapter bar for my wifes bike has worked perfectly. Its easy to install and remove and is very secure once installed. I added some foam to protect the bars finish from the bike rack J-hook and it still looks like new. Very satisfied with the adapter bar.


This Rhino rack bike frame adapter works great.We use it on my wifes step through e bike.It is easy to use and does not come loose at all when in use on the bike rack.would recommend.Thank you etrailer for the great customer support.


Adapter bar is just what we needed to secure our step-thru e-bike on our bike rack. Fast delivery, and a great price made our purchase perfect!

Kenneth B.


It is strong and fits our step thru bike very positive. Great product.


The Product looks great and seems to be easy to follow directions this shipment is one of two that I have ordered my other order will be in tomorrow. Thanks for the follow up .


Once I figured out how to use the Rhino-Rack Bike Frame Adapter Bar for Women's Bikes, I found it most helpful to mount and carry such a bike on a rear or trunk-mounted bike rack. The directions were not clear how to extend the bar and my attempts to do so were insufficient. Finally, and purely by accident, I exerted enough pull to do so; the directions should be more explicit. The etrailer person who helped me was most helpful and willing to exchange what I thought was a defective product. Also, etrailer was most timely in sending the bar. If and when I have a need for another etrailer product, I will certainly use them. They were great.


It’s well-built easy to operate


I am very pleased with my bike rack. Assembly was easy and I also ordered the Rhino adapter bar for my bike which I managed with no problem. I like the fact that it folds down to allows easy storage. I had no problem lifting my bike on the rack and securing it. I highly recommend this rack. Love it!


My wife's bicycle is too small to be held firmly in the hitch rack. This adapter bar makes it workable and easier to lock with the other bike in the rack.


The Rhino-Rack Bike Frame adapter bar worked perfectly on my wife's Trek hybrid. A must-have accessory for any womon's bike that will go on a bike rack like the Hitching Post Pro.


I initially ordered a Swagman adapter bar, but after waiting more than two months the item was still not in stock. I was offered the alternative Rhino-Rack, which was shipped immediately. I have not yet used the adapter bar, but it appears to be what I need.


Really much better quality than I expec ted.



Have used the Rhino bar to carry a heavy electric bike on the hitch rack. Holds secure with no loosening.


I originally placed an order for the Thule frame adapter not realizing the item would not arrive until May, which is too late. Within minutes of me placing the order for the Thule, George sent me email to let me no about the May delivery date and offered to switch it out for a similar item in stock. George already had replacements linked in the email for me to review. All I had to do was call to customer service and say make the switch, which I did. The lady who answered the phone was also super friendly and extremely helpful. I had a very pleasant experience ordering from etrailer. It was my first time ordering from them and I tell you it won't be my last. The customer service is personable, friendly, efficient and fast! The products are excellent as well with such a wide variety of quality items. To my surprise, I received my order in lightning speed. They shipped it out the same day! Thank you etrailer for a great experience!


We have a bike rack with trays, so bikes sit on it and arw racheted down instead of hanging. Our new bikes are Townie step-throughs so could not ratchet down. This appears to be perfect for us! And Adam at e-trailer was a great help!


I received the Rhino-Rack frame adapter bar and I'm very satisfied with the item. It works just as advertised and is extremely strong and holds my bikes (I bought two) securely. I highly recommend it for transporting bikes.

Show More Reviews

See what our Experts say about this Rhino Rack Accessories and Parts

  • What is Length Range of Rhino-Rack Bike Frame Adapter Bar for Women's Frame Bikes # RRRBCA021
    The adapter length range of the Rhino-Rack Bike Frame Adapter Bar for Women's and Alternative Frame Bikes # RRRBCA021 is 23-29 inches. Since you need 28-29 inches this would work well for you.
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  • Bike Rack Options For Downhill Mountain Bike With Slanted Frame
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    The Yakima RidgeBack 4-Bike Rack # Y02458 is absolutely compatible and a fantastic choice for a 2020 Kia Telluride. When we installed a trailer hitch on a 2020 Telluride, the Curt Trailer Hitch Receiver # C13420, we found that it was 4-1/2 inches from the hitch pin hole to clear the bumper, and the RidgeBack is a full 9-1/2 inches from the pin to the closest part of the rack, so you will have more than enough clearance to use the rack. The RidgeBack is a premier 4-bike rack because it...
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    The anti-sway cradle will still work. The rubber strap for the anti sway strap can be attached at any place on the seat post down tube. Using a frame adapter bar won't affect that fit, as you can see in the photo I've provided. As far as frame adapters go, we really like the # 64005 from Swagman because it's the easiest to use adapter bar we offer.
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    I assume you are referring to the Yakima OnRamp - 2" # Y36FR because this is the version that is constructed to withstand the added torque and force exerted on the rack when mounted on a 5th-wheel trailer. It is important to note that the weight capacity of this rack decreases to 40 pounds per bike when mounted on a trailer. When determining if the ramp is long enough to use, it really depends on the height of your hitch receiver on the trailer. Since the ramp measures 51 inches long,...
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    I have a solution for you, but the Lets Go Aero BikeWing-2 NextGen 2-Bike Rack you are referring to has a weight capacity of 40lbs per bike, which would not be sufficient for an electric bike weighing 65lbs. Instead, I would look into the Hollywood Racks Sport Rider SE Bike Rack for 2 Electric Bikes # HLY74FR which has a weight capacity of 80lbs per bike and is compatible with motorhomes that have 1-1/4" or 2" trailer hitch receivers. Keep in mind, since your radrunner 1 seems to be a...
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    I believe you are referring to the answer that says to use the Curt Multipurpose Ball Mount with 2" Receiver for Bike Racks and Cargo Carriers, part # D210, along with a bike rack in the upper 2" receiver to be able to carry your bikes while towing. This can be done, but there are some things to keep in mind. First, this ball mount has a 2" drop, so you will need to be sure this is acceptable for your trailer's coupler. Second, the total amount of tongue weight this ball mount can handle...
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    I have a great solution for you. Unfortunately, there are no accessories to modify the Inno Tire Hold 2 # INH120 in order to make it accommodate e-bikes with fenders. Here at etrailer, we do not recommend using bike racks with a wheel-mounting attachment style for bikes with fenders. The reason for this is because bike fenders can become cracked or damaged during transport. A great solution that avoids potential fender damage is the Hollywood Racks Sport Rider SE Bike Rack for 2 Electric...
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  • What Bike Rack do You Recommend for My Adventon Adventurer E-Bikes on a Motorhome?
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    The Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C13130 measures 6" from the hitch pin hole to the rear of the 2017 Acura RDX (this can be seen in one of the attached demonstration videos). Since the Hollywood Racks Traveler 4 Bike Carrier # HR8500 measures 9-1/2" from the hitch pin hole, you will have plenty of clearance between your bumper and the bike rack's upright bar. This is a really nice bike rack but keep in mind you may need to use adapter bar # RRRBCA021 to secure...
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