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Yakima Tube Top Bike Adapter Bar

Yakima Tube Top Bike Adapter Bar

Item # Y02531
Our Price: $38.95
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Shipping Weight: 4 lbs
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For female or oddly shaped frames, throw on a Tube Top Adapter. The adapter attaches quickly and easily between your handlebars and seat post to form a sturdy, horizontal bar, which makes the bike compatible with most hitch mounted carriers. 1-800-940-8924 to order Yakima accessories and parts part number Y02531 or order online at Free expert support on all Yakima products. Great prices and Fastest Shipping for Yakima Tube Top Bike Adapter Bar. Accessories and Parts reviews from real customers.
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  • Reviews (182)
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Yakima Accessories and Parts - Y02531

  • Hitch Bike Racks
  • Spare Tire Bike Racks
  • Trunk Bike Racks
  • Adapter Bar
  • Frame
  • Yakima

For female or oddly shaped frames, throw on a Tube Top Adapter. The adapter attaches quickly and easily between your handlebars and seat post to form a sturdy, horizontal bar, which makes the bike compatible with most hitch mounted carriers.


  • Creates a straight tube top for female or oddly shaped bike frames
  • Installs quickly and securely on wide range of bikes
    • Keeps bikes secure on single- or dual-arm mounts
  • Has adjustable, large-diameter tubing and anti-rotation inserts
    • Provides greater bike stability
  • Attaches to bike with molded collars
    • Collars are gentle on bike stem and seat post


  • Fits most bike frames and styles
  • Capacity: 1 bike at 45 lbs
  • Weight: 3.5 lbs
  • Retracted length:
    • Overall: 25-3/8"
    • Tube only: 14"
  • Extended length:
    • Overall: 31-1/2"
    • Tube only: 22-1/8"
  • Lifetime warranty

Dimensions of Cross Tube Adapter Bar Extended and Retracted

8002531 Yakima Tube Top Bike Adapter Bar

Installation Details Y02531 Installation instructions

Customer Satisfaction Score:

Customer Reviews

Yakima Tube Top Bike Adapter Bar - Y02531

Average Customer Rating:  4.5 out of 5 stars   (182 Customer Reviews)

For female or oddly shaped frames, throw on a Tube Top Adapter. The adapter attaches quickly and easily between your handlebars and seat post to form a sturdy, horizontal bar, which makes the bike compatible with most hitch mounted carriers.


Purchased this unit only after my original adapter bar (from Swagman) was on back order. I called eTrailer after not seeing any activity from my order in 2 days. That's when I was made aware that it was not available for another couple of weeks. Not a big deal but would have liked to be notified sooner and not have the rest of my order delayed because of the adapter bar.
The unit is well built, heavy duty and very sturdy. Locking arms lock in place with a click to let you know they're locked. Doesn't fit my wife's bike that well (a bit long) but I've gotten it to work. Used it over the weekend on a 4hr trip and looked and performed great. Thanks eTrailer

Dave R.


Well, its been over a year now and the Yakima Tube Top Bike Adapter still looks great and is holding up well to the rigors Ive put it through. Thanks again


Prior to purchasing the bike rack, we loaded our bikes in the back of our CRV. We had not purchased a rack before as we were told that there weren't any racks that would fit a CRV. That's where came in - I went on line and found the site and the rest is history. The bike rack came quickly and with a few adjustments, it was soon on the back of the CRV. Unfortunately, I did not realize that a female bike required an adapter bar so we were unable to use the rack with both bikes until the second order arrived with the adapter enclosed. Friendly and prompt communication from on both orders. I definitely recommend purchasing this product from - just don't forget a Tube Top adapter if one of your two bikes is for a woman!



Hi, is your Honda CRV a 2014 5door?How many stabilizing straps do you have?Thank you!Janet

Patrick B.


We looked up Julie's order and it is a 2005 Honda CR-V. The bike rack is a Yakima SpareTime, it bolts to the spare tire mount so there are no straps used to secure the rack to the vehicle. Each bike is held on with 3 straps, 2 across the top tube to secure the bike to the rack and 1 around the seat post to keep the bike from swinging. As you know, your 2014 doesn't have the rear mounted spare, so your bike rack options are roof, hitch or trunk/hatch mounted. I've added a link to all the trunk racks we have that will fit your CR-V, if you're interested in roof or hitch mounte instead, let me know.


It allow me to secure my step thru Lectric E bikes on the Hollywood Sport bike rack.


I received the Yakima bike rack from etrailer for my Jeep. I received it quickly and found it easy to attach. I then determined that since I have a woman's/mountain bike I needed the tube top adapter. I do wish I would have known that so I could have ordered everything at the same time. I now have it all and everything works great!


Decent little rack. I mounted this on a 2020 Jeep Renegade 4x4 Limited. It was difficult to get set up and as a ton of slack on the tie downs. I just cut them and burned the nylon since this is the only vehicle that this rack will ever be on. Secured one bike, rode well with little movement. Secured two bikes, a little wiggle. Secured three bikes and I was not comfortable at all!!
The bikes I loaded are a Giant Stance 1 29er Full Suspension, Trek Marlin 5 hardtail and a Liv Bliss 2. The total of weight of these 3 bikes is 92 pounds, shouldn't be that big of an issue... however, when looking at the directions on Yakima site, it says that 90 pounds includes the weight of the rack?!?!?! I mean come on be real as to what people can put on their rack without the weight of the rack. I would not buy this again if I had the choice.

However, etrailer... you guys rock. Super fast shipping and easy check-out!!


Second time in a row that ordering from etrailer saved me money over the manufacturer. At the time of ordering these bars Yakima’s site was charging $39 for them, etrailer was $29 and with free, (over $99 since I bought 4) fast shipping. I would advise anyone to do your comparative shopping with etrailer, same brand name just cheaper.

by: not only had the best price for the adapter bar I was looking for, but they did not gouge me on shipping costs. After ordering you get emails at every stage, than the best of all, I received an email stating they bumped my order from standard to priority at no additional charges. I will check in the future for purchases, outstanding customer service and delivery.


This is a junk system for an rv. Have to keep redoing codes every trip
Don’t waste your money


We received a damaged box, damaged items, no instructions, the nuts and bolts are completely stripped and not inside a bag. This was obviously used, returned, not checked for quality and sent out. We are extremely upset.

Etrailer Expert

Rebecca N.


Oh my goodness! I will have our Customer Service team reach out as soon as possible. We can have replacements sent out.


In theory it’s a good idea. Caused damage to bike seat. Yakima can do better. Get a roof rack and save your bikes from the wear and tear.


Good product to stabilize the bikes in the Yakima rack. Fast delivery received it in 2 days!


The Bike Adapter Bar works as intended. The buttons to release the two ends are recessed and difficult to press open. The bar is heavy and adds additional unecessary weight as I life my bike on my rack.


Don't like it
part of support loops around
bike seat which could loosen during driving.
my opinion its not safe

Etrailer Expert

Jenny N.


I completely understand your concerns about the bike adapter bar. This bike adapter bar will fit loosely on the bike until the bike is placed on the rack. The bike adapter bars have tension pushing on them both ways. At that point gravity pulls the bike down, and the bike rack arms holding the adapter up, will keep it secure. They are tested to make sure that they are safe to use.


I placed an order for a Swagman bike rack and and 2 adapter bars with in early August 2016. A week later I received a notice that the adapter bars were on back order, but my order would be sent once they were available. Another several weeks passed and I called to inquire about the status. I spoke with Pat C. who explained that there was no expected date for shipment, but she could replace the adapter bars with another brand. I was happy with the offer and accepted. Then Pat checked the rest of my order and was very happy to tell me that the bike rack was on sale for Labor Day. She cancelled my previous order and started a new one. Pat saved me nearly $50! My order was shipped later that day and I received it two days later. It was a delight to speak with Pat. She was friendly, helpful and showed great interest in making the customer happy. I will definitely use again.



I am still living both products!


Great product. Secure my bicycle easier and make transportation faster.


Good response, but, the wrong product was sent after emailing customer service and sending a photo from the manual pointing out what was needed. I have already purchased material to accomplish the need.


After a consult with an eTrailer rep, I finally settled on the Saris. I used this for a 3 hour trip (6 hours round trip) with 3 bikes on a lexus NX200T. The video does not show that you need to remove a piece for certain tow hitches. Once I figured that out, it was very easy to assemble. The bikes remained stable and did not get scratched. The locking mechanism added greater stability for the bikes and security when we stopped at rest stops. Remember to buy a cross bar add on if the bike does not have one. I had 2 bikes with the add on, and one without. All 3 bikes remained secure for the trip


ill give it 2 stars, and only for it's sturdiness. what a bad design. first off, why would you not make the collars adjustable. adjustable collars would allow tightening of bar to seat post and goose neck to eliminate bike movement once mounted. a locking mechanism for telescoping bar itself would do the same thing. this top bar has neither. matter of fact, for some odd reason, most top bar adapters on the market don't. the overly large collar mechanisms also limit mounting points, meaning not much left to right movement on the bike rack itself in order to get bikes out of way of each other. if you ever tried mounting 3 to 4 bikes on a 4-bike rack you know what i'm talking about. needless to say sending them back and will remove bottle mount cages to make bikes fit together.....


Definitley needed this for all of our b ikes.


Excellent bike rack for my two electric bikes. The guy I talked to on the phone answered all my questions and was very helpful as I ordered the bicycle rack.


The price, and product were great. Delivery was prompt. The bike bar adapter works great, the only issue was when using the front of the bar on the handlebar stem the front wheel was to close to the ground when mounted on the bike rack, but this was resolved by placing the front of the bar on the top of the fork tube of the frame, the extra 1 1/2" gained by doing this leveled ot the bike on the rack, and gave me the clearance needed. The bike is a 1947 Monark Super Deluxe womens bike, with a tank, and dual springer front end. Thanks for a great product !!

Larry Wildes


Worked great on my wife’s bike. Balances her bike while on the rack



Works great!! I have had this for a year now and makes hanging my wife’s 630 beach cruiser easy.


Works well, video for use excellent.


Bar works great...a nice accessory to h ave.


Not sure about this product. It works, but it seems to big for the bikes I am using it on. It doesn't sit tightly on the bike or seem to fit. Not quite what I wad hoping for but it did do the job. I like to see a more secure fit for the price.

Show More Reviews

See what our Experts say about this Yakima Accessories and Parts

  • Can a Yakima Tube Top Adapter Bar # Y02531 be Used with a Suspension Seat on a Diamondback Bike
    The Yakima Tube Top Bike Adapter Bar # Y02531 would no interfere at all with the suspension seat you have on your Diamondback ladies bike. No damage would be caused either. Check out the review video I attached for this product as well.
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  • Will Yakima Bike Adapter Bar Work With Giant LIV Women's Bike On Yakima KingJoe Pro Bike Carrier
    The Yakima Tube Top Bike Adapter Bar, part # Y02531, measures 14-1/2 inches long at shortest; 31-1/2 inches at maximum length. You can measure the distance from the outside of your seat post to the outside of your handlebar stem to make sure it falls within those distances. The # Y02531 will fit great in the KingJoe pro bike carrier you have.
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  • Is Yakima Tube Top Bike Adapter Bar Supposed to Fit Loosely on a Bike
    Yakima Tube Top Bike Adapter Bar # Y02531 will fit loosely on the bike until the bike is placed on a hanging style bike rack. At that point gravity pulling the bike down, and the bike rack arms holding the adapter bar up, will keep it secure. So it doesn't sound like there is a problem with the one you have. I would do a test run with it on the bike and the bike loaded on the rack. Just a low speed, around the neighborhood type of test. If you find that the adapter is behaving oddly let me know.
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  • What are the Dimensions for the Yakima Tube Top Bike Adapter Bar, # Y02531
    I went out to the warehouse and pulled a Yakima Tube Top Adapter Bar, # Y02531. When measured from the inside of the clamp on one end to the inside clamp on the other end, the shortest length is 14-1/2 inches. The longest inside dimension with the bar pulled all the way out measured 30 inches. Overall length, with the bar collapsed is 23-3/4 inches, fully extended it is 31-1/2 inches long. The 2 clamps are different sizes. The internal dimensions of the smaller one are 1-1/2 inches wide...
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  • Bike Adapter Bar With Highest Weight Capacity
    Since your bike only weighs 4lbs more than the weight capacity of the Yakima Tube Top Bike Adapter Bar # Y02531 it likely will not cause an issue, however, I never recommend exceeding the weight capacity on any product. If there is anything that you can remove off of the bike in order to reduce the weight then I would go that route. This bar has the highest weight capacity available so it is your best option. I attached a demonstration video for you to check out.
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  • Does Adjustable Seat Quick Release Nee to be Removed to Use the Yakima Tube Top Bike Adapter Bar
    The Yakima Tube Top Bike Adapter Bar # Y02531 can be used on your bike if it has the quick release seat adjustment. We actually have a picture of us installing it this way on one of our bikes! (see attached photo) Really the only time this would be an issue is if your quick release lever wasn't very reliable. If you would like to replace it with a nut and bolts anyways just for peace of mind then there is no harm in that either.
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  • Bike Adapter Bar with the Highest Weight Capacity Rating for 2 Cruiser Bikes
    I wouldn't say black and red on the Yakima adapter bar # Y02531 is ugly but then again beauty is in the eye of the beholder. But yes, it is the only bike adapter bar that will have the capacity for a 40 pound bike. There are a lot of bike adapter bars and they are all pretty much the same. Capacities given usually match the per-bike capacity of the racks from the same manufacturer. Yakima is the oddball but it works out. At least the adapter bars will only be on the bikes when they are...
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  • How to Determine the Weight Capacity of the Yakima Tube Top Bike Adapter Bar
    The weight capacity of the Yakima Tube Top bike adapter bar, # Y02531, is determined by the weight capacity of the bike rack you are using. Most bike racks are limited to 30 or 35 lbs per bike and if you are carrying a 40 pound bike rack on a 2 bike rack that has a capacity of 35 lbs per bike you would need to position the heavier bike closer to the vehicle and make sure that the second bike does not cause you to exceed the capacity of the rack. According to Yakima, as long as you stay...
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  • What's The Difference Between Yakima Bar Adapter 8002531 & Y02531
    The 8002531 Yakima Tube Top Bike Adapter Bar and the Yakima Tube Top Bike Adapter Bar Item # Y02531 are the same product. 8002531 is Yakima's part number for this product and # Y02531 is'S part number for this product for our inventory purposes.
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  • Recommended Trunk Mounted Bike Rack For a 2022 Subaru Forester
    I recommend the Yakima FullBack 3 Bike Rack # Y02633 for your 2022 Subaru Forester. This rack can support up to 3 bikes up to 90lbs total weight. Each bike can also not weigh over 35lbs each. The rack uses 4 straps to secure to your Forester and the Interlocking Hub allows for faster installation and removal when needed. Anti-sway cradles and with ratcheting straps help prevent bike to bike contact while you are driving. An integrated lock and cable system ensure your bikes stay secure...
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  • Weight Capacity of a Yakima Ridge Back Bike Rack
    The part # Y02458 that you referenced is the Yakima RidgeBack Bike Rack. The RidgeBack has a weight capacity of 150 pounds. This Yakima rack fits both the 1-1/4 and 2 inch trailer hitches and has a 4 bike carrying capacity. The RidgeBack Bike Rack will Fit Class II and up trailer hitches. I recommend the Yakima Tube Top Bike Adapter Bar # Y02531 with the Yakima Ridge Back bike rack. This bike adapter bar installs on female or alternative bike frames to create a straight tube to hang on...
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  • Recommended 3-Bike Trunk Rack That Will Fit a 2022 Subaru Forester
    For your 2022 Subaru Forester I recommend the Yakima FullBack 3 Bike Rack # Y02633. With this rack you can carry 3 bikes up to 35lbs each but the weight of all 3 bikes cannot exceed 90lbs total on the carrier. The carrier itself weighs only 21lbs making it easier to install on your Forester. With 3 straps to secure each bike this will help prevent the bikes from contacting each other and causing damage to your Forester. An integrated cable lock will allow you to secure the bikes to the...
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  • Will the Yakima FullBack Fit a 2019 Mini Clubman S with Split Rear Doors
    The Yakima FullBack 2 Bike Rack part # Y02634 is indeed a confirmed fit for your 2019 Mini Clubman S. The split rear doors do not create any installation issues. There are however a few steps that vary for a standard install but they are not difficult to complete nor do they require any additional parts. I have attached these steps for you below as well as the test fit photos. Please note if any of your bikes have a deep drop tube frame you will also need the Yakima Tube Top Bike Adapter...
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    Image 1 for Image 2 for Image 3 for
  • Do I Need a Frame Adapter to Carry Day6 Bikes
    After looking through the Day6 website, when using the Yakima FullBack # Y02634, you will need to use a bike adapter bar like the Yakima # Y02531 to carry any of their bike models on any hanging or trunk mounted bike carrier. Generally speaking, unless the bike has a top tube (like most men's bikes) that is mostly parallel to the ground, you will need to use an adapter bar when using a trunk mount of hanging rack to carry your bikes.
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  • Fitment and Compatibility of Yakima FullSwing Y02465 on a 2016 Willy Jeep Wrangler Unlimited w/Spare
    Thanks for taking the measurement from the center of your hitch pin to the edge of your spare tire. That was a great help and made it super easy for me to help you figure out if this bike rack will work for you! I agree that those 3 reasons (security, access, and load capacity) make this Yakima bike rack pretty fantastic. The Yakima FullSwing 4-Bike Rack # Y02465 is going to fit great to your 2016 Willys Jeep Wrangler Unlimited with your spare tire and 2 inch hitch. The measurement...
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  • Can Top Hatch of 2016 Honda CR-V be Opened With Yakima FullBack On?
    The Yakima FullBack # Y02634 would not be able to stay on your 2016 Honda CR-V while you open your hatch. As stated in the linked directions, opening the hatch with the hooks could potentially damage your CR-V. Please note that when using a trunk-mounted rack like the Yakima FullBack # Y02634 it's possible you'll need bike frame adapter bar # Y02531 if your bike is dual-suspension, has a step-through frame or you want to carry a small children's bike. The bar will give those bikes a horizontal...
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  • 4 Bike Recommendation For Class II Hitch With 2 Fat Bike Ebikes and 2 Beach Cruisers
    Good news, I can help you pick out a 1-1/4 bike rack for your 4 bikes. I would recommend a hitch mounted hanging bike rack like Yakima RidgeBack # Y02458 instead of the platform style racks you were looking at. I chose this Yakima rack because of the weight capacity and arm length to accommodate your 4 bikes. Because you have fat bike tires, we know they will take up more wheel space than regular bikes. On this rack you can adjust the cradles distances along the bar to accommodate for...
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  • Do I Need a Frame Adapter for Yakima HangOut 2
    Thank you for the picture. Those are always helpful! Because those bikes have rather aggressive frames, you'll need the frame adapters to carry them on a hanging rack like the Yakima HangOut 2 # Y02637. I recommend using the Yakima Tube Top Bike Adapter Bar # Y02531 because of the molded collars that are used on the frame and seat post, which is great to keep your bike looking new. You'll also want to make sure that your bikes are less than 30-lbs each (60-lbs total) to stay under the capacity...
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  • Trunk Mount Bike Rack For 2019 Honda Civic Hatchback
    Yes the Yakima FullBack 2 Bike Rack # Y02634 fits your 2019 Honda Civic Hatchback. The bike rack has many different fits for different vehicles so you will want to follow Yakima's recommendations on the exact settings to have the bike rack in when securing it to your vehicle. I have attached a link to Yakima's exact fit for your car. This is a great Trunk Mount style bike rack and to make it even better the Yakima Tube Top Adapter Bar # Y02531 makes it much easier to secure women's,...
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  • How To Use Yakima FullBack 2 Bike Rack On Bike Without Top Tube
    In order to use the Yakima FullBack 2 Bike Rack part # Y02634 on a bike without a traditional top tube for the arms to attach, you can use the Yakima Tube Top Bike Adapter Bar part # Y02531.
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  • Does the Yakima Trunk Mount Rack Have the Ability To Carry a Womans Bike
    To be able to carry a woman's bike that does not have the horizontal cross bar, on the Yakima KingJoe 3 Bike Trunk Mount Rack, you will need to use the Yakima Tube Top Bike Adapter Bar, part # Y02531. This Yakima adapter bar attaches to the center seat post and to the handlebar post of the bike and provides a horizontal bar, so the bike can ride level on the bike rack. I am including a link to the instructions on the adapter and a link to a video review of the adapter. If you let me...
    view full answer...
  • Can the Yakima HangOut Carry an 18 Childrens Bike
    The Yakima HangOut 3 Bike Rack # Y02638 is capable of holding children's bikes but you'll need to use the Adapter Bar # Y02531 to do so simply because the bike won't have a big enough frame for the arms of the rack to go through. This adapter bar clamps onto the tube for the handlebars and the seat post which then gives you the spacing needed to mount the bike on the HangOut. I have attached a picture of this rack on a sedan where we have the child's bike at the rearmost location. If...
    view full answer...
    Image 1 for
  • Yakima FullSwing 4-Bike Rack # Y02465 Recommendation for 2014 Subaru Outback
    As long as you have a 2 inch hitch on your 2014 Subaru Outback like the Hidden Hitch part # 87568 then yes, the Yakima FullSwing 4-Bike Rack # Y02465 will work on your vehicle. You should have no interference from this rack with your bumper. If you plan on carrying any womens or alternative framed bikes without horizontal top tubes you may also be interested in purchasing a Yakima Tube Top Adapter Bar # Y02531 to provide a horizontal top tube on your bikes to provide an attachment point....
    view full answer...
  • Will a Girls Bike Fit on the Yakima SwingDaddy Bike Carrier
    Yes, girls bikes will fit on the Yakima SwingDaddy, but I would add an adapter bar such as # Y02531. The adapter attaches quickly and easily between your handlebars and seat post to form a sturdy, horizontal bar. I have included a couple video reviews for you too.
    view full answer...

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