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LockRack Watersport Carrier Universal Crossbar Adapters - Qty 4
Lockrack

LockRack Watersport Carrier Universal Crossbar Adapters - Qty 4

$36.23
Retail:$40.97
You Save: 12%
Accessories and Parts
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This adapter kit allows you to mount a LockRack watersport carrier to your roof rack crossbars without an accessory channel. Includes 4 adapters and mounting hardware. 1-800-940-8924 to order Lockrack accessories and parts part number LR53FR or order online at etrailer.com. Free expert support on all Lockrack products. Great prices and Fastest Shipping for LockRack Watersport Carrier Universal Crossbar Adapters - Qty 4. Accessories and Parts reviews from real customers.
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  • Reviews (65)
  • Q & A (0)
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Lockrack Accessories and Parts

  • Watersport Carriers
  • Roof Mount Carrier Parts
  • Adapters
  • Lockrack

This adapter kit allows you to mount a LockRack watersport carrier to your roof rack crossbars without an accessory channel. Includes 4 adapters and mounting hardware.


Features:

  • Adapter kit lets you mount LockRack watersport carriers to your roof rack crossbars without an accessory channel
  • Padding on the interior of the adapters prevent your crossbars from being scratched
  • 4 Adapters and mounting hardware included


Specs:

  • Application: round, square, aero, elliptical, and most factory crossbars
    • Required for crossbars that do not have an accessory channel
  • Minimum dimensions:
    • Overall: 5" long x 2" tall x 2" deep
    • Inner dimensions: 2-1/2" x 7/8" tall
  • Maximum dimensions:
    • Overall: 5" long x 2-1/2" tall x 2" deep
    • Inner dimensions: 3-3/4" x 1-1/2" tall
  • Distance between bolt holes (center to center): 3-3/4"
  • 1-Year limited warranty



Diagram showing the dimensions of the adapters

Preparing The Adapters For LockRack's Channel Mount
Universal AdapterUniversal Adapter

Before you can mount your LockRack carrier to your crossbars, you'll need to add some channel mount hardware to the adapters. First you'll pull down the rubber pad and insert a t-bolt (sold separately) through the top of the adapter. After you've threaded the t-bolt in the top, place the rubber piece back in its original position on the adapter.

Universal Adapter

Now you're ready to secure the adapters around your crossbar. Once they are all secure, make sure to add a plastic spacer (sold separately) on each t-bolt before attaching your LockRack carrier base to the adapters.

Note: T-bolts and plastic spacers sold separately (LR72FR).

LR53FR Lock Rack Crossbar Adapters for Lock Rack Watersport Carrier - Qty 4

Replaces Lockrack 339LRADPTR and AC-AU

Item # LR53FR





Customer Satisfaction Score:

Ratings & Reviews

4.6

65 reviews
This adapter kit allows you to mount a LockRack watersport carrier to your roof rack crossbars without an accessory channel. Includes 4 adapters and mounting hardware.

by:

I started my purchase by asking a question because the shown measurements didn't seem like the mount would fit my 2020 Toyota Highlander crossbar, but I got a response that the website measurements were wrong so I ordered a pack of 4. I definitely didn't use the mount as intended, but it mounted perfectly. I can see that these mounts could be used for a lot of different things for your roof.

John profile picture

John

6/1/2025

This mount has been going strong for over a year now. I have subsequently had to replace the yellow smiley ball, but the mount and additional hardware used to mount the ball has worked flawlessly.

Kate F. profile picture
Etrailer Expert

Kate F.

6/2/2025

@John If I were to see you next to me on the road, your little yellow smiley ball would definitely put a smile on my face John. Thanks for being someone that spreads smiles to the world, we need more Johns!


by:

Easy to install and the feet worked great for attaching ski racks to my Subaru Crosstrek.



by:

These arrived quickly! The info was accurate and I would definitely recommend eTrailer and these adapters again.

Kate F. profile picture
Etrailer Expert

Kate F.

2/25/2026

Glad to hear they worked out great Jaquen! What kind of water sports enthusiast are you?



by:

Product allowed me to use my factory OEM roof rack with an awning on a crossover Jeep, my set up leaves a lot to be desired in the practicality of the space between the zipper and the roof rails but it works and my car doesnt look silly

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

6/16/2025

As long as it works and looks like you want it to, that's what's important, Nick :)



by:

The clamps let me put my Thule 78” square bars over my RAV4 factory crossbars, so that I can use it for two canoes or one canoe and a space case! Wonderful. It is removable and if I drill extra holes on the Thule bar it can fit any width of factory crossbars on other cars. The clamps are wonderfully designed. They take an 8mm or 1/4” Allen hex



by:

Works like a champ on my 2017 Subaru Outback Limited 3.6R



by:

required drilling a few holes, but seems to be working ok. Not ideal for converting the Yakima Haul Riser from the round to the oblong shaped bars



by:

After scouring the internet webs I found these to help with a rack conversion and they are perfect and holding up great.



by:

These adapters are the perfect size to fit on my Subaru Outback crossbars in order to keep my canoe from sliding side-to-side when blasting down the highway.
But what I really loved about receiving this package today is that it is packed SO perfectly and efficiently, tucked into their ziplock holding bag!!
You guys are great.



by:

I needed an aero bar adapter to mount a Thule Kayak rack to my Hyundai Palisade.
Even though these aren’t advertised for Thule they fit perfectly and are rock solid!



by:

Lightening Fast shipment! Received within days of ordering. Excellent communication, confirmation and updates on purchase and shipping.



by:

I have used these to attach something homemade to the roof rack. I used silicone to retain the nuts in their recesses on the underside of the clamps as these nuts were not retained as the clamps are made. This made it easy to remove and reattach the clamps quickly.
The clamps themselves seem durable and strong.



by:

Product arrived quickly and is mostly as advertised. I was looking for something to attach to the Toyota factory bars on a RAV4, and I think these should work fine.

First, they feel a little flimsy for my intended adaptation, mounting bikes. Second, they bolt center distance is 3.75", not 2.5" as is stated in the "expert" opinion.



by:

The worked as expected and fit perfectly on to the racks. The nuts for the bolt fit into the bracket which made for easy assembly.



by:

These were exactly what I needed for T-bolt mounting solution and fit perfectly on my 5th gen 4Runner cross bars that do not have a T-bolt channel.



by:

Website very easy to locate what I needed. Product was fairly priced and arrived quickly.



by:

Simple design that works well. Solid, low-profile. I used these to install Thule ski racks on GX/ 4Runner roof cross bars.



by:

These were a lot better adapters than what it originally came with and they were cheaper. I used these in the Thule ski rack.



by:

Great quality product. Help when adding my vehicle awning.



by:

Excellent thank you!



by:

They fit and seem sturdy



by:

They work for my application, but I did have to use longer bolts.



by:

This is a great accessory for what I needed.
The included hardware, solid plastic construction and rubber grip pads made if possible for me to add an awning to my OEM roof rack.



by:

Fits perfect I have a Vevor ski holder and they don’t sell spare parts so I’m very happy but will never buy a Vevor product again



by:

Product worked as described, I used these in place of Thule Speed links I had been using previously (not a Lockrack carrier). After having 2 of the speed links break (over time) I am glad to see there was something I could use that would fit my racks and extend the life of the system at a much lower cost.


25
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See what our Experts say about this Lockrack Accessories and Parts

  • How to Attach the LockRack Series-X Watersport Carrier to Crossbars w/out a Accessory Channel
    Hey David, I've got a simple solution for you! The Watersport Carrier Universal Crossbar Adapters item # LR53FR are all you'll need to attach the LockRack Series-X Universal Watersport Carrier item # LR88FR to your crossbars. The Adapters item # LR53FR are specifically designed to bolt to the bottom of the Series-X Universal Watersport Carrier item # LR88FR. This is so you can clamp them around crossbars without an accessory channel. What kind of kayak do you have? You can add this...
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  • Will the LockRack Watersport Carrier Universal Crossbar Adapters Work w/ Rhino-Rack Vortex Bars?
    Sorry Mark but they do not. The LockRack Watersport Carrier Universal Crossbar Adapters item # LR53FR only fit crossbars up to 2-1/2" wide. The crossbars on the Rhino-Rack Vortex Roof Rack item # RR92VE, that fit your Colorado, are 3-1/8" wide. This is a common size amongst the Vortex bars. The only solution I have for you is to use the LockRack Replacement T-Bolt Spacer Pack for Watersport Carrier Channel Mount Bases item # LR72FR. These t-bolts will fit in the top channels of Vortex bars.
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  • Is There a LockRack For 3 Long Boards
    Hi Chase, We can get you that same LockRack setup for 3 long boards, though we don't offer it in a package so you'll have to get the pieces separately, though it's just the 45 cm (17-3/4") base and open angle long arms. So exactly what you'll need is the following: - LockRack Surfski Adapter Base Set for Watersport Carrier - 17-3/4" Wide # LR46FR - LockRack Replacement Long Arm Set for Watersport Carrier or Ladder Rack - Open Angle # LR49FR These parts are the two bases and four arms...
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  • Will The Lockrack Crossbar Adapters LR53FR Fit Factory Crossbars On 2014 Subaru Outback?
    Hello Alex. The LockRack Watersport Carrier Universal Crossbar Adapters # LR53FR will fit the factory crossbars on your 2014 Subaru Outback. These are made for the LockRack watersport carriers. They have not been tested for use with a rooftop tent, plus we do not carry this Bushman brand, so I am afraid I don't have a way to tell you if they will work with the awning you mentioned or not. I can only recommend using them for their intended purpose which is for the LockRack carriers. You...
    view full answer...
  • What Kind of Bolt Does the Universal Crossbar Adapter for LockRack Watersport Carrier Use?
    I spoke with LockRack and they said the bolt for the Universal Crossbar Adapter for Lockrack Watersport Carrier # LR53FR measures 1-3/8" long and takes a 3/16 or 5 mm hex key.
    view full answer...
  • Distance Between Bolts of Universal Crossbar Adapter for LockRack # LR53FR
    The distance between the bolts of the LockRack clamp kit part # LR53FR is 3-1/4 inches.
    view full answer...
  • Can LockRack Hardware Kayak Carrier Hardware be Swapped to T-Bolt
    Hey Henry, it sounds like you are asking if the crossbar hardware kit # LR53FR can be swapped out for the T-Bolt hardware kit # LR72FR so that your LockRack can attach directly to the top channels of crossbars. Is that what you are asking?
    view full answer...
  • How Many Clamps do I Need Per Crossbar for the LockRack Watersport Carrier Crossbar Adapters?
    Hello Jesus, Great question! You will need 4 clamps per bar, so if you have 2 crossbars, you will need a total of 8 clamps. You’ll want to order 2 sets of the LockRack Watersport Carrier Universal Crossbar Adapters - Qty 4 # LR53FR to secure your LockRack Watersport Carrier # LR24VR to your crossbars. What body of water do you mainly go to? I’m out at Mark Twain Lake and Lake of the Ozarks here in Missouri quite a bit.
    view full answer...
  • How Tight Should LockRack Crossbar Adapters Get Tightened
    Hey Ken, this is a good question but there isn't a torque spec or specific tightness recommendation needed for the LockRack crossbar adapters # LR53FR that you referenced. You would need to go with hand tight with appropriate sized hand tools.
    view full answer...
  • Can Solar Panel Be Mounted To Inno Square Bar Roof Rack?
    Hey Brandon, good question. Those Inno square bars don’t have a top T-slot like aero bars, so your best bet is to use U-bolt–style or clamp-on brackets that wrap around the bar. A solid option for solar panels and accessories are the Universal MightyMounts for Yakima Roof Mounted Accessories # Y03590. They clamp around your Inno square bars, so no drilling needed, and you can bolt the solar panel frame straight to the top of the mounts using stainless hardware. Just make sure everything’s...
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  • Can LockRack Universal Crossbar Adapters Be Used To Attach To a T-Bone Bed Extender?
    The LockRack Watersport Carrier Universal Crossbar Adapters # LR53FR being designed for traditional roof mounted crossbars are only able to open up to 1-1/2" tall. You could use longer screws to account for the additional height but this is not something we have tested to work for your application and the mounts may roll on the round bar due to the design. We really don't have anything specifically designed for your application.
    view full answer...
  • Is There An Adapter To Get The Thule DockGlide To Fit Smaller Factory Crossbars?
    Hi Tara! I can't say I have had this issue with a Thule DockGlide # TH896 before, but there are some odd sizes with factory crossbars. There aren't adapters for this, unfortunately, but all is not lost! This will be a bit of an outside the box solution, but you could use some foam rubber to wrap around the bars in between the clamps to fill the space. We don't carry this, but your local hardware store will. I would try to find something pretty stiff to keep it from moving, but it will...
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  • Can The Universal Crossbar Adapter # LR53FR Be Used For Securing a Rooftop Cargo Box To Cross Bars?
    The U-Bolts and other hardware in the Replacement Hardware Kit # TH05603 are going to be much stronger than the Universal Crossbar Adapter # LR53FR you found. Since the U-Bolts have a larger metal surface to distribute the load across they are less likely to become damaged. The mounts you found only have a small hole for the hardware which is fine for some small roof mounted accessories but I would be hesitant on using them on a cargo box as they typically have thinner plastic on the bottom...
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  • Difference Between Channel and Universal Mounting Lockrack Adjustable Stand-Up Paddle Board Carrier
    The difference is the mounting hardware that comes with the Lockrack Adjustable Stand-Up Paddle Board Carrier - 1 SUP. The Channel Mount # LR47FR comes with mounting hardware that slides into T-Slot channels in your roof rack crossbars, while the Universal Mount # LR84VR comes with mounting hardware for T-Slot channels as well as the clamping hardware, part # LR53FR, that allows you to install it on crossbars that don't have T-Slots - like what you'd see on a lot of OEM crossbars.
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  • Distance Between Bolts of LockRack Crossbar Adapters LR53FR
    Hi John, You can use the LockRack Watersport Carrier Universal Crossbar Adapters # LR53FR. I verified for you the distance from center to center between the bolts is 3-3/4 inches, not 2-1/2 inches, so these will definitely work for the 2-5/8 inch wide crossbars on your 2020 Toyota Highlander.
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  • Can Thule Stacker Kayak Carrier Fit 2024 Lexus NX 450h+
    Hey Scott, so your best option will be to go with the new version of the Thule Stacker part # TH830 that fits the OEM bars of your 2024 Lexus NX 450H. The reason for this is that your current Stacker only fits square bars which Thule redesigned their square bars a few years ago and now their current roof rack components won't work with the bars you have. So that would mean you'd have to start over with a completely new roof rack and by the time you do that it just makes more sense to replace...
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  • Troubleshooting Loose Lockrack Watersport Carrier Clamps on 2023 Nissan Rogue Factory Crossbars
    I'm a little surprised that the clamps on the # LR54FR won't tighten down on your 2023 Nissan Rogue crossbars but it is not unheard of with watersport carriers. The easiest way to fix the issue is to add in a thin piece of rubber. This will increase the crossbar diameter and fill the extra space which will allow you to tighten the clamps down so they're nice and secure.
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