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  1. Hitch Adapters
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  3. Hitch Reducer
  4. Fits 2-1/2 Inch Hitch
  5. No Extension
  6. 2-1/2 Inch to 2 Inch
Curt Hitch Receiver Reducer Sleeve - 2-1/2" to 2"

Curt Hitch Receiver Reducer Sleeve - 2-1/2" to 2"

Item # C45405
Our Price: $29.16
You Save: 17%
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Shipping Weight: 3 lbs
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This adapter sleeve lets you use 2" towing and hitch-mounted accessories with your 2-1/2" hitch receiver. Durable, carbide black powder coat finish. 1-800-940-8924 to order CURT hitch adapters part number C45405 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Hitch Receiver Reducer Sleeve - 2-1/2" to 2". Hitch Adapters reviews from real customers.
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  • Reviews (218)
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  • Videos (2)
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CURT Hitch Adapters - C45405

  • Hitch Reducer
  • Fits 2-1/2 Inch Hitch
  • No Extension
  • 2-1/2 Inch to 2 Inch
  • Bike Racks
  • Cargo Carriers
  • Hitch Mounted Accessories
  • CURT

This adapter sleeve lets you use 2" towing and hitch-mounted accessories with your 2-1/2" hitch receiver. Durable, carbide black powder coat finish.


  • Adapter reduces a 2-1/2" x 2-1/2" hitch receiver opening to 2" x 2"
  • Lets you use 2" towing and hitch-mounted accessories
  • Easy to use - slides directly into your hitch or onto the shank of your accessory
  • Durable, carbide black powder coat finish


  • Dimensions: 5-1/2" long x 2-1/2" wide
  • Pin hole diameter: 5/8"
  • Limited lifetime warranty

Note: Weight capacity is limited to the rated capacity of your hitch receiver.

45405 Curt Reducer Sleeve 2-1/2" to 2"

Video of Curt Hitch Receiver Reducer Sleeve - 2-1/2" to 2"

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

Video Transcript for Curt Hitch Receiver Reducer Sleeve Review

Brad Hello, neighbors, it's Brad here at etrailer and today we're taking a look at the Curt Reducer Sleeve that's gonna take our receiver tube opening from a two and a half in to a two inch. So, if you have that two inch ball mount and you've upgraded to a heavier dutier truck and or maybe you just have a couple trucks in your fleet no worries. You're not going go have to buy a whole separate ball mount. You can go ahead, put that sleeve in place and be able to put your two inch ball, no problem. I really like that I can from my pickup with a two inch receiver to my diesel with a two and a half inch without having to get any additional equipment. Now it also has two notches on here which makes it nice and easy.

That way when you slide this in you can't push it too far. It's not gonna get stuck in there, you're always gonna have a little edge here to be able to pull that out if you do need to go back to that two and a half. Now what's also nice is you're not gonna need a special pin and clip. You'll just be able to slide this through. You'll align your holes and then your normal pin and clip will go through, holding that all in place.

Now you can see that our ball mount has seen better days as it's starting to rust but the great part about this being steel construction with that black powder coat finish, that's gonna hold up against that rust and corrosion so you're not gonna see that transferring over for a long time. And that was a look at the Curt Reducer Sleeve, going from a two and a half inch to a two inch..

Customer Satisfaction Score:

Customer Reviews

Curt Hitch Receiver Reducer Sleeve - 2-1/2" to 2" - C45405

Average Customer Rating:  4.8 out of 5 stars   (218 Customer Reviews)

This adapter sleeve lets you use 2" towing and hitch-mounted accessories with your 2-1/2" hitch receiver. Durable, carbide black powder coat finish.


Does what is supposed to do. Seems solid and have had no issues. Use it to pull trailers ranging from 3,500lb to 10,000lb. Have not noticed any slop or movement beyond what I had with the stock 2" receiver. The only thing that is not great is that when pushed in all the way to the stop tabs the pin hole is past the pin hole of my receiver so you have to line up three sets of holes rather than just two.


etrailer is always my first choice!


Everyone I talk to there is very pleasant and are so willing to help you. Very knowledgeable about their products.A great product fits my truck perfectly. Definitely will do more business with them


The hitch adapter works well, however I can't insert it all the way or the pin holes don't line up. This makes it difficult to put the hitch in and having to line up all 3 holes at once.


Really love the bump stops that line up the pin holes perfectly.


Item fit as needed with little play. Totally necessary to retro fit my old receivers for lighter applications.


Sliped this adapter right in my Class V Hitch works great. I'm using it with A Curtis adj hitch and locking pins. I'm towing a 24ft 10k cargo trailer with it.


I may be just too picky. I expected a tighter fit but this adapter is perfectly serviceable and will do the job. It might rattle a bit but that is not a big deal.


This sleeve adaptor is perfect. My kids bought me a 2" NFL hitch cover for Christmas, even though my hitch receiver was 2-1/2" I figured I could always use a smaller receiver adaptor for another trailer that I have. Wouldn't have bought it otherwise, but it is a good fit and I may be able to use it for towing in the future (and my "gifted" hitch cover is installed).


I was surprised how sturdy this sleeve is...great quality


Product arrived in a damaged box and had some scratches in various places. Packaging could have probably been more robust.
Other than that, the installation was quick and straightforward. Unless you regularly bench about 100 pounds, you'll need some assistance. Have yet to tow with it, but it should work just fine. Much better than the stock hitch that failed which prompted the replacement. 03 GMC Sierra 3500 CC Long bed, Dually, 6.6L.


the receiver reducer did not fit my truck, the holes for the locking pin did not align. Your site said it fit my truck but it didn’t.

Sorry to hear that. This is a universal item that converts a 2.5 inch receiver to a 2 inch. Here are the specs to see if it fits: Dimensions: 5.5 inch long x 2.5 inch wide Pin hole diameter: 5 eighths inch
-- Etrailer Expert Sierra K - 09/15/2021


Couldn't be any easier to install.


My recommendation for this product would be to make it longer to distribute the load along the entire length of inside hitch receiver. Also to get rid of the tabs on the front because I had to cut them off to be able to slide my hitch in far enough to line up the pin holes.

Dont use it. Worthless as far as Im concerned.
David - 02/08/2020


Got this so I wouldn’t push the sleeve back furth into the hitch receiver when installing the hitch. It lines up perfectly with the hitch pin holes and the notches keep it where it belongs.


Just what I needed


Perfect fit - quick shipping


works great!

by: has become my favorite shopping website when I need something for my truck or travel trailer. I now check etrailer BEFORE amazon. They always have what I'm looking for at a great price and the delivery times are really not too bad. I'm spoiled by 2 day shipping but I've come to appreciate the quality of the products here. Having an RV specific website makes finding just the right part a lot easier. Oh and the adapter for the hitch receiver on my 2020 Ford F-250 fits perfectly. I was afraid the spare tire was so close to the back of the receiver that the shank might be too long, but nope, it's perfect.


Not much to say. It's a hitch sleeve. Does what you would expect. I do like the little nubs on the end that keep the sleeve from sliding into the hitch too far.

Same as before. Not much to say. Its been great.
Elliott L - 08/13/2018


Product itself looks great. The powder coat finish is a bonus. Biggest issue i have is that the product description specificlly says "made in USA" wich is why i purchased this item. But when i recieved item, the sticker says "made in china". I purchased what i thought was an American made product and recieved a China product.

Thanks for the review Fredy L. We have noted this and have updated our description on the product page and are in the process of updating our videos as well.
-- Etrailer Expert Rachael H - 07/20/2017


Not a precise fit. The adapter does allow some additional movement between hitch and the receiver. I recommend using the same size hitch and receiver whenever possible and skipping the adapter.


this was just the ticket for my new truck. My hitch didn't match the receiver any more so this was perfect. Though the pin that I ordered to go along with it was only just big enough to secure the hitch. I would recommend a longer pin for the 2 1/2" receiver, as it is, I will likely just leave my hitch attached.


Product arrived just as described and works great with my Silverado 2500HD since my hitches and bike rack are all for a 2" receiver.


etrailer was awesome as always with getting the product to us in a timely manner

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