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Replacement 2" Hitch Adapter for Thule Doubletrack, Hitching Post Pro, or Vertex Racks - Qty 1

Replacement 2" Hitch Adapter for Thule Doubletrack, Hitching Post Pro, or Vertex Racks - Qty 1

Item # 853-7489
Our Price: $18.07
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853-7489 - Shanks and Adapters Thule Hitch Bike Racks
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This adapter allows you to use the 1-1/4" stinger - or shank - on your Thule Doubletrack, Hitching Post Pro, or Vertex bike rack in 2" hitches. The adapter attaches to the stinger with 1 flathead screw (not included). 1-800-496-5010 to order Thule accessories and parts part number 853-7489 or order online at Free expert support on all Thule products. Great prices and Fastest Shipping for Replacement 2" Hitch Adapter for Thule Doubletrack, Hitching Post Pro, or Vertex Racks - Qty 1. Accessories and Parts reviews from real customers.
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  • Reviews (202)
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  • Videos (2)
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Thule Accessories and Parts - 853-7489

  • Hitch Bike Racks
  • Shanks and Adapters
  • Thule

This adapter allows you to use the 1-1/4" stinger - or shank - on your Thule Doubletrack, Hitching Post Pro, or Vertex bike rack in 2" hitches. The adapter attaches to the stinger with 1 flathead screw (not included).


  • Replaces 1 hitch adapter for your Thule Doubletrack, Hitching Post Pro, or Vertex bike rack
  • Fits TH9028, TH9028XT, TH9029, TH9029XT, TH9030, TH9030XT, TH9031, TH9031XT, TH934, TH934XTR, TH990, and TH990XT
  • Allows the 1-1/4" stinger on your bike rack to be used in 2" hitches
  • Attaches to the stinger with 1 flathead screw (853-5787-02 - sold separately)


853-7489 Replacement 2" Hitch Adapter Sleeve for Thule Doubletrack, Hitching Post Pro, and Vertex Bicycle Racks - Qty 1

Video of Replacement 2" Hitch Adapter for Thule Doubletrack, Hitching Post Pro, or Vertex Racks - Qty 1

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Thule Bike Racks Replacement 2 inch Hitch Adapter Review

Dustin: Hey everyone. Dustin here at, we'll be taking a look at some replacement parts for Thule bike racks. I got a specific problem here today, and I want to show you on my Thule Hitching Post Pro. Now, rather than replace an entire bike rack just for some missing parts, check out our inventory of replacement parts here at etrailer. Today we're taking a look at the shank adapter.Now this is my Hitching Post Pro, but it's also going to work with your Doubletrack, your Vortex and other similar Thule bike racks. The problem I have is that because this is adaptable between inch-and-a-quarter and two-inch hitches, sometimes I take the adapter sleeve off to switch between vehicles and I've actually lost the adapter sleeve.

Not a problem. We sell a replacement part here at you'll want to do is you'll want to go and pick up the sleeve itself. And if you are missing the screw, that's a separate part number. We'll put that up on the screen for you. And if you want, you can pick up the tool as well, but I'll let you in on a little secret.

It's just an Allen wrench, which you probably already have at home.So it's a direct replacement. It's going to slide right into place. All you want to do is make sure that this concave portion goes on the same side that your set screw is on. You'll want to take your set screw, more than likely you're using the new one. But if for some reason your old one was chipped or cracked or something like that, you can reuse your old one.

You'll want to get it started in there and then we'll just tighten it the rest of the way down. Don't go crazy tight. Just get it nice and snug to where it's flush. You're not going to have any problems inserting this into your hitch. You're basically back to normal.

Just go ahead and get your bike rack installed like you normally would.We do have replacement anti-rattle bolt here at too, if that turns up missing.So just like that, I'm able to load my bike up again. And I saved myself several hundred dollars just by swapping out parts for my Thule replacement part here from

Customer Satisfaction Score:

Customer Reviews

Replacement 2" Hitch Adapter for Thule Doubletrack, Hitching Post Pro, or Vertex Racks - Qty 1 - 853-7489

Average Customer Rating:  4.7 out of 5 stars   (202 Customer Reviews)

This adapter allows you to use the 1-1/4" stinger - or shank - on your Thule Doubletrack, Hitching Post Pro, or Vertex bike rack in 2" hitches. The adapter attaches to the stinger with 1 flathead screw (not included).


The bolt you sent me as a substitute for the Thule bike rack hitch is not compatible at all whit the Thule adapter. It was money in the air. I was told that it would work but it did not, very disappointed. I had to go to a local hardware store and get the right bolt.


Perfect for my 1.5” bike carrier
and my 2” hitch and Yakima bolt lock.


Efficient order & delivery experience. Hitch adapter fit and worked as advertised. I was would definitely use etrailer again and I highly recommend them.


Does what it’s meant to do. Been in my moms car hitch for probably a year straight I don’t think she has the strength to take the rack out so it just stays in.


Enjoy working with I always find what I need and their videos have been helpful on many occasions. Excellent customer service.


Alex went the extra mile on this Thule bike rack hardware order. He provided the customer service that I assumed extinct. Now I know it is merely endangered. Alex was first rate.


Snug, secure fit into trailer hitch. This definitely fits the Thule model 934XTR 4 bike carrier I purchased around 2012. Not easy to verify that these parts fit older models. I've attached a picture for your reference of the carriers 1" hitch that this works with. Parts came nicely packaged and delivered in a couple of days. Would use eTrailer again!


Does what it's supposed to.
Direct OEM
Easy to order, plenty of shipping options & showed up exactly when etrailer said it would.

User Tip: if you're using this to secure the 2" hitch adapter on a 1.25" stinger, add a drop of loctite to the screw before installing

1 year later, still working as it should, no noticeably excessive wear or deterioration.
Richard J - 09/15/2021


Delivered quickly and exactly what I needed. Trusted to carry 10k-15k worth of bikes.


Disappointed.Not very secure and safe. Would not travel without out a bike on let alone one attached. Money poorly spent.

This adapter is used with the Thule Hitching Post Pro part # TH934XTR
Thule Hitching Post Pro - Folding Tilting 4 Bike Rack w Anti-Sway - 1-1/4" and 2" Hitches
to convert the 1.25 shank on the bike rack to be used in a 2 inch receiver. You will want to make sure to tighten down the flat head screw and also to make sure that the anti rattle bolt is threaded through from the proper side. If you still experience rattle after then using an anti rattle device like part # RM-061
Roadmaster Quiet Hitch for 2" Trailer Hitches
will help.
-- Etrailer Expert Jenny N - 04/04/2022


My Thule bike rack always had excessive play in the hitch receiver. I tried this replacement adapter hoping it would solve the shaking while transporting bikes down the road. Sadly, this didn't work. I would up changing my bike rack entirely to a Hollywood rack which tightens into the receiver. Not a reflection on etrailer, they provided the part quickly.


This fit as required


Craftsmanship is great! Its what i needed to replace a plastic adapter hard solid aluminum and fits great on my sport rack bike rack.


Replaced my late 90's Jeep Cherokee Sport with a new Toyota 4Runner. The Toyota has a 2" receiver, so I needed a solution for my older Thule Hitching Post Pro 4-bike rack. Before installing I wondered whether there would be some jiggling as I drove along. But once I ratcheted down the threaded bolt it proved to be rock solid. I think this adapter, the bolt and shipping were < $20 or so. Way cheaper than buying a whole new bike rack. I'm good to go! If only the weather would warm up, I'd take out the bikes.

That hitch adapter worked great last summer with my new 4Runner. I biked more miles than any summer in the last 20 years. I was worried Id have to buy a whole new bike rack for my new car. I liked my old Thule unit, since it was all-metal and still in great shape. That product saved me money and enabled me to see 100 miles of trails along a scenic watershed that passes near my home.
Paul B - 04/03/2018


Great arrive. Received what I wanted.


Significant upgrade over plastic 2 inch adapter that came with Thule hanging hitch rack. Rack is more stable now.


Bought a used Thule hitch rack that was missing this adapter sleeve, so was happy to find it on etrailer. Everything fit well and felt secure. Only complaint is that it should include the screw used to secure this to the 1.25” post - etrailer sells you the screw separately for $[X]+, which seems needlessly expensive.


Perfect adapter for Thule bicycle rack, fits exactly as described.


This is the exact piece I was looking for! Having misplaced both my original adapter and the instructions, the customer service department at etrailer did a fantastic job helping be determine which rack I had as well as assuring me that I would receive it by today to test it tonight and be ready for use tomorrow.

One year in and product is still working incredibly well. Going from a strapped bike rack to a trailer hitch style has worked out very well. Still very appreciative of etrailers for helping me find the piece to make this possible. Great company with excellent customer service
Patrick - 08/09/2017


Needed this adapter to adapt up from 1 1/4" to 2" shaft so that my Thule bike rack would fit the 2" reciever hitch on the RV that I had rented.

Very knowledgable sales person helped me figure out the correct adapter that I needed and was able to overnight it to me in Lake George where I was located at that time. Saved me a load of hassle and did not rush me so that we could be sure it was the right part.

I rarely give 5 stars but this person really got me out of a jam and I got exactly what I needed when I needed it!

Many many thanks.


Shopped other sites with no luck.

it on etrailer.


My overall experience with etrailer has been OUTSTANDING. I ordered this Thule 2" Hitch Adapter (item 853-7489) in order for my older Thule Hitching Post Pro bike rack to fit in my Curt trailer hitch. The adapter works perfectly. I am very impressed with the strong and sturdy quality of this product. When I inserted the bike rack and tightened the bolt, the fit is very stable and without wobble. I am extremely satisfied with this product as it also saved me from having to spend a lot more money for a new bike rack.


I have to say: I didn't expect this to work as well as it did. I ordered the screw recommended in the video and put it into the shank of my Thule 954 bike rack. The beauty part is that, with the screw in place, the hitch adapter goes onto the shank and stops so that the holes for the bolt in the shank and the adapter line up perfectly.

Putting the adapter into my 2" trailer hitch was easy too: it stopped at a depth that had the holes in the hitch, adapter, and shaft line up perfectly.

It was super easy to get the bolt through the holes and tighten it.

The bike rack is now very solidly held in the trailer hitch without any wobbling whatsoever.


Super fast service and easy website to find things on


Works just fine for exactly what it is designed to do. I use it to put 1 1/4" bike racks on the 2" hitch. Helps to have the set screw on the side to hold it in place while installing it, but can be done (frustratingly) without. I have used it with several different vehicles and several different bike racks.

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Info for this part was:

Employee Mike L
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Employee Michael H
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Employee Jeffrey L
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Jeffrey L
Employee Frances L
Edited by:
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Video Edited:
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