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Universal MightyMounts for Yakima Roof Mounted Accessories

Part Number: Y03590

80 Reviews | 281 Questions

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Universal MightyMounts are a simple and economical way to adapt most Yakima carriers to almost any factory roof-rack crossbars. MightyMounts are specifically designed to fit popular factory racks and install easily with no tools. 1-800-940-8924 to order Yakima accessories and parts part number Y03590 or order online at etrailer.com. Free expert support on all Yakima products. Great prices and Fastest Shipping for Universal MightyMounts for Yakima Roof Mounted Accessories. Accessories and Parts reviews from real customers.

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Yakima Accessories and Parts - Y03590

Features:

Adapts most Yakima carriers to almost any factory roof-rack crossbars
Installs easily with no tools
Includes Dynaflex-padded bails for protection and grip around roof-rack crossbars
- Bails come in "A" and "B" sizes for different-sized bars
- Fits popular factory racks with specific design and shape
Secures with 4 Accessory Lock Housings and 4 Same Key System (SKS) Cores (sold separately)
- SKS Cores can be changed out to make all your Yakima locks keyed alike
Works on different vehicles with "one size fits all" capability

Specs:

Quantity: 4
Application: Round, square or factory roof racks
- Factory crossbars must not be more than 4" wide or 1-1/2" tall
Compatibility: Yakima BasketCase, most Yakima bike mounts, ski mounts and watersport accessories
SKS Cores:
- For enhanced security, install 4 Accessory Lock Housings and 4 SKS Cores to lock carrier to crossbars
Lifetime warranty

Note: Universal Mighty-Mounts are not compatible with the Yakima Hullraiser, Anklebiter, Kayak Stacker, or Sidewinder.

8003590 Universal MightyMounts for Yakima Roof Mounted Accessories

Installation Details Y03590 Installation instructions

Customer Satisfaction Score:

93% were satisfied with this product

7% of customers were not satisfied

Product did not meet expectations
Wrong item was ordered

7% of customers were not satisfied

Product did not meet expectations
Wrong item was ordered

4.7

80 reviews

5 Stars		(62)
4 Stars		(16)
3 Stars		(1)
2 Stars		(1)
1 Star		(0)

by: Shea 02/28/2026

These were a perfect solution that allowed me to use all my old Yakima bike racks and Kayak holders (I previously had the old Yakima round bars) with the new Seasucker Monkey Bars that I purchased.
It was a bit of work to configure them correctly (there are lots of different parts depending on the confirguration you need) but once they are attached to your Yakama parts, they are easy to take on/off of the Monkey Bars.

Click to Enlarge

Lazer S.

3/3/2026

Glad they are working well for you, Shea! Definitely nice to be able to use stuff you already have! : ) What vehicle do you have all this on? Hard to tell from your picture.

by: Craig 01/13/2026

Took a few adjustments and tries to make these work with the old PowderHound ski rack. Had to install the adapters to the ski racks before attaching to the Mighty Mounts as I was using the old carriage bolts and nuts from the PowderHound. In the end everything worked out and these were perfect for my 2021 Honda Pilot with factory roof rails.

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by: Maciek 03/05/2026

This allowed me to renew 27 years old Yakima ski/snowboard carrier. Just a bit of spray paint (Rust Oleum) on old flaky surfaces, replace old adapters designed for tubular bars from passenger car an now it can go on those flat crossbars on new, modern SUV's or crossovers. The purpose was rather odd and not exactly skis or snowboard, but holder for two kayak paddles next to one tandem kayak on the roof of Mazda CX-5.

Lazer S.

3/10/2026

Glad we could help, Maciek! And I don't think that's to odd of a way to use a snow board/ski carrier. I always prefer to use things for more than just their intended purposes and you are doing just that! ^___^ What kind of kayak do you have? I did a little of that when I was younger.

Maciek

3/11/2026

@LazerS Pelican Argo 136XP (sit-in tandem kayak)

Lazer S.

3/11/2026

@Maciek That thing's pretty sweet! I never tried a tandem kayak, but i tried a surfski once, but i was way too top heavy for that (I'm 6'5" and pretty hefty). Managed to stay upright for a little bit, but decided that probably wasn't for me. : P Anyway, have fun out there and let me know if there is anything we can help with down the road!

by: Bill T 08/26/2026

Etrailer is generally the fist place I look when needing something for the camper or one of the vehicles. They are very helpful, pricing is competitive, and shipping is fast.

by: Rheal 06/25/2026

The mounts fit perfectly the size of the cross bars, very sturdy material. I plan on attaching angles to the top of the mounts so that I can secure long pieces of lumber on the top of my car, I also plan on using in conjunction with my load extender, which will allow me to carry pieces longer than 8 feet.

by: Daniel 03/18/2026

Handled mounting of my older Yakima kayak rollers and saddle. Tight grip. No problems so far in 1500 miles.

by: AutoJunkie 01/07/2023

We decided to try out skiing as a family this year. I haven’t skied in 20 years. These worked perfectly for attaching my circa 2000 era Yakima Powderhounds to Thule Aeroblade cross bars on our minivan. These mounts are pricey, but I’m so glad I didn’t have to buy a new ski rack!

The mounts fit almost flush to the top and bottom of the cross bars and there’s no play when properly tightened down. The mounts come with two bails, I used the A one and clipped it into the lower hinge on the backbone. YMMV but you want the top and bottom hinges to conform to the shape of your cross bar as best as possible.

If you find the adapter hard to install into the powderhound, start towards the middle of the ski rack, twist them into place, then slide towards the end and line up the holes.

Minus one star because these are so ugly (the opening of the clamp facces forward) and definitely not aerodynamic, but roof rack attachments rarely are. Function is more important here and these universal mighty mounts definitely get a 100% there!

Shipping was fast and good communication from the etrailer folks throughout the whole transaction.

Click to Enlarge

by: Mark 12/09/2025

MightyMounts are well built with clear instructions to cover many options. These will work perfect with my crossbars and ski rack.

by: Birdo 09/30/2023

Super easy to attach and set up. Perfect for for my 2020 Subaru Outback crossbars.

Click to Enlarge

by: Mylene 12/05/2020

Worked great for attaching my vintage Yakama Lockjaw to the new aero bars on my 2018 Subaru Impreza.

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by: Sean 06/24/2018

Perfect adapters for my 2018 Toyota RAV4! Installed Hullyrollers and Mako Saddles on them. Worked great on the Toyota factory racks.

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by: Douglaz 06/07/2025 One Year Later

Good, easy to use product. Etrailer has the best stuff and a reliable customer service department. Cheers guys

by: Brian 05/20/2023

It took a while to arrive, but it was exactly what I needed to attach my existing Yakima rack to my new car. It is tough to find the right part sometimes, but I found it here!

Brian One Year Later

12/29/2024

Works great after a year. We managed to crack one of the pieces by driving under a low clearance spot, but that was totally our fault.

by: Andrew 08/13/2022

I had old Yakima Powerhounds mounted on round bars, but need to mount them on the factory bars of my new Crosstrek. These Universal MightyMounts saved me from buying a new ski add-on. Only drawback I can see is the system doesn’t lock to the car like when I had them mounted to my round bars. However, I usually view the rack as a means of transport rather than storage.

etrailer.com’s customer service was solid. I made the purchase around April, but due to the part being back ordered, did not revive them until August. etrailer.com emailed me updates about once a month until I received my order.

by: David 07/20/2019

I have oval Rhino cross rails on my car. I have an old Yakima standup bike carrier. This product brings the two together perfectly.

David One Year Later

7/21/2020

Still working great.

by: Brian 10/02/2024 One Year Later

These Universal mounts were a nice affordable solution for me. My Yakima racks were set up to be mounted on a trailer. I have a Subaru outback and needed a universal mount so that I could use my racks on my outback crossbars. Perfect solution.

by: Paul 07/19/2022 One Year Later

This product was awesome in allowing me to mount an older tandem bike rack onto the factory Audi Q7 roof rack. Held our road tandem with no issues during 1000 miles at highway speeds (I.e. 80 mph). Slight concern that rubber pads wilm go missing over time.

by: Tom E 02/08/2017

I searched the internet trying to understand what I needed to convert my Yakima Hullraisers and Lockjaw to work with my new Subaru Outback. My old set up worked on round Yakima crossbars. The internet was not clear at all about whether there was a workable conversion to the built in crossbars of the Outback. Finally I etrailer and talked to Jordan. He contacted Yakima himself. He identified exactly the parts I needed, and then called me back. Very old school and very effectively. Everything worked as it should.

A quick note, the Hullraiser conversion kit doesn't include any instructions -- Yakima gives me more engineering credit than I deserve. For those who might be doing the same conversion, get the instruction manual for the Hullraiser Aero which shows how it is done.

Thanks Jordan

by: Ron H. 06/17/2014

I was amazed at how quick I received my order. The mounts I ordered were exactly what I was looking for to mount some Yakima bicycle roof racks I purchased used on craigslist. I thought I wasted my money on the racks when there was no mounts with them. I went to REI and was told I was going to need a whole different system that would cost over $300. The mounts from etrailer I bought, REI had no idea they were available. I plan on buying another set soon.

by: Mark 07/19/2021

very good for multiple style crossbars
they are plastic but seem well made
i am using them on Hully Rollers and Saddles which required
some ingenuity to make them work but in the end work well

ETrailers were honest about delay is supplu chain
Having said that there time estimate and delivery were spot on
i am ordering a second set for use with my second kayak

by: Lynne 06/17/2025 One Year Later

Live yakima compinents!

by: Bill M 10/07/2014

I needed to adapt hundreds of dollars worth of Yakima Kayak and Ski carriers to the Aero Rhino Rack I bought from eTrailer.com.
Ricky researched the issue, contacted Yakima, confirmed the correct adapters and I had them in less than a week.

Fantastic customer support - these guys came through for me.

Bill

by: Tom 07/23/2020

Brackets for older Yakima bike rack were needed for a different roof rack on another car. The eTrailer web site was easy to navigate and lead me to exactly what I needed. Received the shipment quickly.

by: John 09/22/2018

I just bought a tadpole trike and I wanted to place it on my factory installed roof rack for my 2016 Toyota RAV 4. James A. was fantastic on trying to make this work. He came up with using the Yakima Boa wheel trays and the Yakima Universal Mighty Mounts. Only 2 of each was required due the length of the trike. The optional "B" lower bracket was needed. The set up is working very well. Thanks James

by: Dave K. 06/21/2016

I was very happy to find adapters which fit my Yakima accessories, specifically in this case a Kayak rack, to a BMW rack which I just picked up. Haven't install them yet but it looks like everything needed is included and her order and delivery were very smooth.

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See what our Experts say about this Yakima Accessories and Parts

Do you have a question about this Accessories and Part?

Mounting Hardware Needed to Mount Older Yakima Accessories to Aero-Style Crossbars
If you have a variety of older Yakima products that you want to mount to crossbars that are 2-1/2" wide x 3/4" tall then the Universal MightyMounts # Y03590 would be your best bet. These adapters fit a wide variety of Yakima products but they are somewhat specific. If you can let me know what products you are wanting to mount them on I can see about verifying if these will fit or what other parts you may need.
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Is There Yakima MightyMount that Fits Thule Aeroblade Subaru Crossbar
Hey Dave, thanks for all of the info you mentioned. The type of Thule crossbar that you have now is their older Aeroblade bar. According to Yakima the only MightyMount that works with it is the Universal MightyMount part # Y03590 so that would be only solution for that. Unless you wanted to replace the roof rack or the carrier you have the MightyMounts I mentioned is only option. Let me know what you think would work best for you.
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Will Yakima 39H Mighty Mounts fit on Rhino-Rack Aero Bars on 2018 Jeep Grand Cherokee?
On your 2018 Jeep Grand Cherokee with black and chrome roof rails the Rhino-Rack RVP Roof Rack # RRRVP27 is confirmed to fit. The Rola APE rack has a slick aftermarket look and will mount directly to the flush roof rails on your 2018 Grand Cherokee. The crossbars in both options are 3-1/8" wide x 1" tall so the Mighty Mount 39H Accessory Adapter for Yakima CoreBar and JetStream Crossbars - Qty 4 # Y03539 will fit and allow you to use your older Yakima ski rack. I've attached photos to...
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Will Older Mighty Mounts Work on New JetStream Bars?
I called Yakima to check with them since the 9v and 10 v Mighty Mounts you're referring to have been discontinued. According to Yakima, the new JetStream bars are larger and more aerodynamically shaped compared to the older style of crossbars that the Mighty Mounts were created for, so they most likely will not fit. The closest alternative are Yakima's Universal Mighty Mounts # Y03590. These can be secured with Lock Housing # Y07220 and SKS Lock Cores # Y07204.
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What Crossbar Dimensions do the Yakima Mighty Mounts Fit
Yes, the Yakima Mighty Mounts part # Y03590 can fit crossbars that are up to 4 inches wide and 1-1/2 inches tall so they would work for you.
view full answer...
Recommended Square Bar Roof Rack Mounts For Ski and Snowboard Rack for 2007 Saab 9-3
For your 2007 Saab 9-3 with factory rails, I recommend the Evo Raised Rail Feet for Thule Crossbars - Factory Raised Rails - Qty 4 # TH710401 which is compatible with the bars you mentioned, that are often simply referred to as square bars even though they are rectangular by measurement. I also recommend the Thule One-Key System Lock Cylinders - Qty 4 # TH450400 for increased security. The manufacturer suggests using 50 inch bars which have been discontinued with this system. You can...
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Will Universal MightyMounts Fit a Yakima LockJaw Bike Rack and VW Factory Roof Rack
The Universal MightyMounts # Y03590 will work with your Yakima LockJaw bike rack. The MightyMounts are designed to fit crossbars up to 4 inches wide and up to 1-1/2 inches tall. Bars that are either more than 4 inches wide or more than 1-1/2 inches tall will be too large for the MightyMounts. MightyMounts only come in a set of 4 so if you need 6 you will need 2 kits and you will have 2 spares should you need them in the future!
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How Do You Assemble the Yakima Universal MightyMounts
If you have the Yakima Raptor Aero Y02093 then that bike rack already comes with feet that mount to factory bars. The original Raptor only fit the round bars so if you have the original Raptor then MightyMounts # Y03590 can be used. The MightyMounts are 2 pieces, a top and a bottom and the hardware. The nut that the bolts thread into is located inside of the top piece above the pad part that fits in the top piece. What you would do is lay the bike rack on its side, push the bolt through...
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Universal Mighty Mounts Fit to an Older Fat Cat 4 for Installing on a Thule Aeroblade Bars
I spoke to my contact at Yakima and he informed me that the Universal MightyMounts part # Y03590 should install on your older Yakima Fatcat 4. Basically you will need to remove the mounting hardware you have on the Fatcat and install the # Y03590 on place of it. If you check out the installation instructions I attached to the right and scroll down to the "Snow" section you will see how it installs.
view full answer...
How to Mount Yakima SpaceCase Cargo Box to Factory Crossbars on 2020 Subaru Forester
I do have a solution for you, however I reached out to my contact at Yakima and he said the Universal MightyMounts # Y03590 aren't compatible with your older SpaceCase Cargo Box. The mounting hardware for the SpaceCase is a bit different and you won't be able to properly attach the MightyMount clamps. Your best route for mounting the SpaceCase to the wider aero-style factory crossbars on your new Forester is to replace its existing hardware with part # 8870098. This kit consists of similar...
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What Else is Needed to Mount ARB Universal Bracket
Hey Dave, Thanks for the photo, and while I can't post it I can tell you exactly what was used there for the mounting on the crossbars, and that was the Universal MightyMounts for Yakima Roof Mounted Accessories # Y03590. Just keep in mind the crossbars on your 2015 Chrysler Town and Country can only be up to 4" wide and 1-1/2" tall to work with the ARB Universal Awning Bracket # ARB57FR. We've also never tried this so I need to mention I don't know for certain if this will work for...
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Can Yakima Lift Ticket Fit Thule Wingbar Crossbars
Hey Mark, to adapt your Lift Ticket 6 to fit the Thule Wingbar crossbars you have you would need the Universal MightyMounts part # Y03590 that you referenced.
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Will Yakima Universal MightyMounts Fit 2021 Honda Pilot Factory Crossbars
Hey Craig! Yes, the Universal MightyMounts for Yakima Roof Mounted Accessories # Y03590 will fit the factory crossbars on your 2021 Honda Pilot. Any big skiing trips coming up?
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Is There MightyMount That Fits Yakima HighRoller to Inno CrossBar
Hey Todd, for your Yakima Highroller you could use the Universal MightyMounts part # Y03590 with the Inno aero roof rack part # IN84YV that fits your 2025 Volkswagen Jetta.
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Will Yakima MightyMounts Fit Factory Roof Rack on a 2017 Volkswagen Jetta
The Yakima universal MightyMounts, # Y03590, do fit the factory roof rack on a 2017 Volkswagen Jetta. I have included a link to the installation instructions for you.
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Recommendation for How to Increase Clearance of Yakima Subaru Buttondown on 2008 Mercury Mariner
For the regular Yakima ButtonDown you would need to use MightyMounts # Y03590 to attach the carrier to the factory crossbars if they are not larger than 4 inches wide and 1-1/2 inches tall. If you have the ButtonDown Aero then you can use # Y8860040. This item is a single unit so you would need 4 of them total. This foot will fit crossbars up to 3-7/8 inches wide or 1-1/4 inches tall. I do have a good solution for raising this rack further away from the vehicle to allow you to fit those...
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How to Use Yakima HullyRoller and Mako Saddles on Aero Crossbars
Yes, the Universal MightyMounts for Yakima Roof Mounted Accessories part # Y03590 will allow you to mount your Yakima HullyRollers and Yakima Mako Saddles on aero crossbars.
view full answer...
Should Holes Be Drilled to Install Swagman Roamer LT Roof Rack
The photos you were referring to did not come through but you are going to have to drill to mount your Swagman Roamer LT Roof Rack # S80510. I have linked the installation instructions for you and they do make clear that you will have to position the towers as close to the edge of your camper's roof as you possibly can. I am not quite sure what you were referring to by mounting to the "sides" but this rack does need to attach to the top of your camper's roof like in the accompanying photo...
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Adapter to Carry Yakima Accessories on SeaSucker Crossbars
I reached out to a representative of Yakima who told me that for the 1-1/4 inch diameter round crossbars of a SeaSucker roof rack like the # 298-SX6000B, the Universal MightyMounts for Yakima Roof Mounted Accessories # Y03590 will fit around them. They did caution that the MightyMounts not be the "best" fit and could roll a bit on your round bars but this is the only adapter that will allow you to use Yakima accessories on round bars that are 1-1/4 inches in diameter. The MightyMounts...
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Do Universal MightyMounts Work With Yakima HighRoller Bike Rack
Your Yakima HighRoller bike racks will work with the Universal MightyMounts # Y03590. I have cut out a section of the instructions from both the HighRoller and the MightyMounts and the HighRoller specifies using MightyMounts while the linked instructions from the Universal MightyMounts # Y03590 actually has its own page dedicated to use with the HighRoller.
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Adapter Recommendation that Can Fit Yakima FatCat 6 to Audi Q8 Crossbars
The universal MightyMount part # Y03590 is a fit for the older style of Yakima FatCat 6 that you have and can fit crossbar sizes up to 4 inches wide and 1-1/2 inches tall so it should work well for you. I don't have the year of Q8 that you have though so I wasn't able to fully confirm this though. Send me the year of your vehicle and I'll be able to get a full confirmation.
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How to Fit Yakima Hully Rollers, Mako Saddles, the LockJaw, and ButtonDown on 2018 Outback Wagon
For your (discontinued) Yakima LockJaw roof bike rack you would need to use the Universal MightyMounts # Y03590. I confirmed this with my contact at Yakima. The Universal MightyMounts will also work with your Hully Rollers Y04035, Mako Saddles, and ButtonDown from Yakima. They come in sets of 4 so you will need to keep that in mind when ordering.
view full answer...
What Yakima MightyMounts fit Factory Roof Rack on 2013 Subaru Crosstrek?
To use Yakima HullyRoller # Y04035 on the factory roof rack of your 2013 Subaru Crosstrek you will need to use the Universal MightyMounts # Y03590. You can secure these mounts with the use of 4 SKS Lock Cores # Y07204 and Lock Housing # Y8870069. You can check out how the lock cores install by taking a look at the video I've linked.
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MightyMount for Yakima Button Down for Aero Bars
Hey Brian, we've checked with Yakima in the past and the correct MightyMounts for the Button Down carrier is the part # Y03590. I attached a picture of a similar Yakima ski rack that uses the same hardware attachment style as the Button Down for you to check out.
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