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Curt Trailer Hitch Receiver Adapter - 1-1/4" (Class II) to 2" - 6" Long

Curt Trailer Hitch Receiver Adapter - 1-1/4" (Class II) to 2" - 6" Long

Item # C45785
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Curt Hitch Adapters - C45785
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Transform your 1-1/4" trailer hitch receiver (Class II only) into a 2" one with this adapter from Curt. It slides into your existing hitch receiver so you can easily carry a 2" bike rack or other hitch-mounted accessory. Call 800-298-8924 to order Curt hitch adapters part number C45785 or order online at etrailer.com. Free expert support on all Curt products. Guaranteed Lowest Price and Fastest Shipping for Curt Trailer Hitch Receiver Adapter - 1-1/4" (Class II) to 2" - 6" Long. Hitch Adapters reviews from real customers.
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  • Reviews (57)
  • Q & A (25)
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  • Why etrailer?

Curt Hitch Adapters - C45785

  • Hitch Expander
  • Fits 1-1/4 Inch Hitch
  • 6 In Extension
  • Curt
  • 1-1/4 Inch to 2 Inch
  • Class II Only
  • Steel

Transform your 1-1/4" trailer hitch receiver (Class II only) into a 2" one with this adapter from Curt. It slides into your existing hitch receiver so you can easily carry a 2" bike rack or other hitch-mounted accessory.


Features:

  • Hitch adapter turns your 1-1/4" Class II trailer hitch receiver into a 2" receiver so that you can mount a bike rack, cargo carrier or other 2" hitch accessory
  • Extended length allows your hitch-mounted accessory to clear your bumper
  • Strong, steel construction
    • Solid 1-1/4" shank
  • Gloss black powder coat finish offers superior rust resistance


Specs:

  • Application: 1-1/4" x 1-1/4" trailer hitch receivers
    • Fits Class II hitches only
  • Receiver size: 2" x 2"
  • Maximum tongue weight: 350 lbs
  • Length: 6" from center of hitch pin hole to center of hitch pin hole
  • Overall length: 10"
  • Pin hole diameters:
    • 1-1/4" Receiver: 1/2"
    • 2" Receiver: 5/8"
  • 1-Year limited warranty


Note: Using this adapter will reduce your hitch's weight capacity by 50 percent. Do not use this hitch adapter in towing applications or for snow plow attachments.



45785 Curt Hitch Extender for 1-1/4" Trailer Hitch Receivers - 6" Long






Customer Reviews

Curt Trailer Hitch Receiver Adapter - 1-1/4" (Class II) to 2" - 6" Long - C45785

Average Customer Rating:  4.7 out of 5 stars   (57 Customer Reviews)

Transform your 1-1/4" trailer hitch receiver (Class II only) into a 2" one with this adapter from Curt. It slides into your existing hitch receiver so you can easily carry a 2" bike rack or other hitch-mounted accessory.

- C45785
by:

The hitch adapter and 90 degree mount solved my desire to mount my electric wench on my auto trailer replacing the manual wench. See photo. The 2" sleeve would not come out of the existing 2" receiver so I used the hitch adapter to make the transition. The etrailer experts correctly told me there would be some play in this joint. However, it works here (as this is not for towing). I also used the 90 degree mount upside down (also not an approved application). But again no towing is involved. I did need to drill a new hole in the receiver. 716216



- C45785
by:

Solid heavy duty steel. Fits snugly into hitch. 563671


Comments
Works great. Easy to attach and remove. Secure mount.
William - 09/20/2019

61355

- C45785
by:

It has worked as expected for a year. I attach a bike tray rack that weights about 40 pounds and two bikes which weigh about 30 pounds each and use this on several multi-week mountain bike road trips in the southwestern U.S. I go on some rather rough roads. 749222



- C45785
by:

While this seems to be a sturdy, well-made product, it is not the optimum set-up for a Subaru Outback equipped with a factory-installed 1.25" hitch. Quite simply, the pin hole drilled in the 1.25" section is not where it should be. In order for it to line up with the hole in the Subaru hitch, the hole would need to be another 1.5" or so closer to the "rear". Not that this doesn't work, for it does--- but with the unit sticking out yet another 1.5" or so from the hitch. To remedy this, I drilled another half inch hole into the unit where it should be located. Now it works great, but it took considerable effort (and a $20 titanium drill bit) to get it right. Again, this unit will work in a Subaru Outback without drilling another hole in it; it's just not optimal. 711077



- C45785
by:

Heavy steel and as pictured. The two inch interfaces very loosely compared to my other hitch with same bike rack. Rattling down the road I'll go! Also, in case you are interested the adapter DOES NOT come with a pin (That's a separate purchase and a bit of a surprise). I'm weighing the purchase of a 1 1/4" rack to snug things up as I ride daily. If so check my recycling bin for this gem. 402863



- C45785
by:

Works great! 670045



- C45785
by:

901658



- C45785
by:

The items came in a timely manner. I have not had an opportunity to use them yet. 894952



- C45785
by:

Exactly what I ordered! 868772



- C45785
by:

866837



- C45785
by:

Great service and speedy delivery. Have not had to use it yet because of other issues associated with new bike rack but I really appreciate the extremely comprehensive selection of hitch related items. 818297



- C45785
by:

Fit, finish are quality 810083



- C45785
by:

No complaints. I've only used it a couple of times as we have changed our bike rack to work with the smaller hitch, but when we do need to carry more bikes on the larger rack this adapter does the trick. 805847



- C45785
by:

Great solid adapter. 757268



- C45785
by:

Just what I needed. 716218



- C45785
by:

Just what I was looking for. 705643



- C45785
by:

Work just as expected. Easy installation and clear instructions 690939



- C45785
by:

They were prompt and everything fit like a glove. 682446



- C45785
by:

Works 680500



- C45785
by:

Excellent customer service and prompt s hipping. 639778



- C45785
by:

I sometimes need to switch the receiver on my towing set-up. This adapter fits and works perfectly. Shipping was also quicker than I expected. 629704



- C45785
by:

This company is the greatest. Great customer service! 620154



- C45785
by:

Does not fit the 1 1/4 receiver on our standard, factory-installed hitch on 2010 Ford Escape. Width of the 11/4” bar seems OK. Height is oversize and on one side is about 1/32 over size. From an end view the bar even looks slightly out of square. Bought a 1 1/4” Curt Ball mount from eTrailer recently for the same vehicle that fits perfectly. But will have to return this adaptor. 616981



- C45785
by:

Well built. Good value. 601312



- C45785
by:

haven't used it yet 592530


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Show More Reviews

Ask the Experts about this Curt Hitch Adapters

  • 1-1/4 inch to 2 inch Hitch Adapter that Bike Rack with 3 inch Long Shank Fits
    I have a solution for you, but the distance from the hitch pin hole of the Curt adapter part # C45785 to the back of the hitch opening is 2.55 inches so it would not be deep enough for your bike rack. Instead we have the Brophy hitch adapter part # HTAD which has a distance of 3-1/8 inches from the pin hole to back of the hitch opening so it would be your best option.
    view full answer...
  • Pin to Secure Curt 1-1/4" to 2" Trailer Hitch Receiver Adapter
    You can either use a standard Pin and Clip # PC2 or a Locking Hitch Pin # e98879 to secure the 1-1/4" end of the Curt Hitch Receiver Adapter # C45785.
    view full answer...
  • Why Does a Hitch Expanded Reduce Weight Capacity But A Ball Mount Does Not
    The Curt Trailer Hitch Receiver Adapter part # C45785 will reduce the tongue weight capacity of your trailer hitch by 50% according to the manufacturer. This same statement holds true for pretty much any other hitch adapter like this no matter the manufacturer. The reason that this will reduce your tongue weight capacity by 50% but a ball mount will not has to do with a supported vs non-supported load. If you were to place a bike rack on the rear of the vehicle using a hitch adapter,...
    view full answer...
  • Which 1-1/4 inch to 2 inch Hitch Adapter Can Fit Class I Hitches
    We have a 1-1/4 inch to 2 inch hitch adapter that is compatible with Class I 1-1/4 inch hitches like the part # HTAD or for a similar setup that provides additional rise you'd want the part # HT5R.
    view full answer...
  • Availability of Adapter to Allow Bike Rack to Be Carried and Tow Trailer
    Sounds like you may be interested in the part # D210. This will fit your 2 inch hitch and gives you a ball mount platform down below and a hitch opening above for your bike rack. I attached an install video and picture for you to check out as well.
    view full answer...
  • Difference Between Curt and Tow Ready 1-1/4 inch to 2 inch Hitch Adapters
    Realistically there isn't much difference between the two extenders you referenced aside from price. Both are extenders that go from 1-1/4 to 2 inch and are both right at 6 inches in length. If it were me I would go with the Curt # C45785 over the Tow Ready part # 80303.
    view full answer...
  • Flat Towing With a 1-1/4" Hitch Receiver
    I do have an option that will allow for you to use your 2017 Subaru Outback to flat tow a 1972 Volkswagen Beetle, however, none of the 1-1/4" to 2" hitch adapters are rated for towing applications. Instead, you will need to use a 2" hitch receiver like the Draw-Tite Max-Frame Trailer Hitch Receiver part # 75673 as this has a 2" receiver tube opening. You may also need a high low adapter depending on your application. In order to determine this, you will need to measure from the ground...
    view full answer...
  • 2 inch Square Receiver Adapter for 1993 Buick Roadmaster
    All of the hitch receivers and receiver accessories that we offer are square, not rectangle. Since the receiver that you mentioned likely doesn't exist anymore, I recommended installing a new hitch so that you can use a variety of accessories. If your 1993 Buick Roadmaster is an Estate Wagon then I recommend using the Draw-Tite Class II Hitch # 36105. It has 3,500 lbs of Gross Trailer weight and a max Tongue Weight of 350 lbs. If you have the Sedan then I recommend the Curt Class...
    view full answer...
  • Hitch Expander from 1-1/4 Inch to 2 Inch for Bike Rack on 5th Wheel
    A 1-1/4 inch hitch on your 5th wheel will not be a class I. The class I and class II receivers look identical just the Draw-Tite class I hitches have a weldstop integrated to keep you from using class II accessories that are rated higher. Yakima does not make a class I compatible bike rack so that will also ensure your hitch is a class II. It sounds like you want to use a hitch expander like # C45785 which you can do. Using an adapter like this will however reduce the tongue weight...
    view full answer...
  • How To Safely Carry Thule T2 Classic 4 Bike Rack With a 2020 Mazda CX-5
    I have another option but using a 1 1/4 inch to 2 inch adapter like the Curt Trailer Hitch Receiver Adapter # C45785 will reduce the maximum tongue weight rating of your trailer hitch receiver by 50%. Due to the weight of your Thule T2 Classic 4 Bike # TH9044-TH9046 you would not be able to support 4 bikes with an adapter. Your best option is to install the Curt Trailer Hitch Receiver # C13315 which has a 2x2 receiver, and installs with only the receiver being visible. I included a picture...
    view full answer...
  • Recommended Trailer Hitch Receiver and Hitch Cargo Carrier on 2015 Buick Encore for Mobility Scooter
    For your 2015 Buick Encore you can haul a 90 lb scooter when using the correct parts. I recommend starting with the Draw-Tite Trailer Hitch Receiver # 36554. This is a class II hitch which has a 1-1/4 inch receiver opening and is rated for up to 300 lbs tongue weight. I then recommend the hitch expander # C45785 which will reduce your tongue weight to 150 lbs but when used with the MaxxTow 27x47 Cargo Carrier w/ Pivoting Ramp # MT70100 which weights 54 lbs, when you add your 90 lb...
    view full answer...
  • Using 2 Inch Receiver For a Bike Rack Versus Using a 1-1/4 to 2 Inch Receiver Adapter
    The problem with using an adapter is that it will lower the tongue weight capacity of the hitch by 50%, and also, because there will be an intermediate piece installed in between the receiver hitch and the hitch mounted bike rack, you're going to have more bounce and movement in your bike rack. Additionally, if you're using hitch locks, you'll need a You would certainly save some money by going with the Curt Class II # C12091 hitch over the # 306-X7239 EcoHitch, but you'll need to purchase...
    view full answer...
  • Recommended Bike Rack to Carry 4 or 5 Bikes on 2018 BMW X5 With Class II Hitch
    Before getting into specific racks I wanted to mention that if you are using a hitch adapter, they will decrease the tongue weight capacity of your hitch by 50 percent. So if you were using an adapter such as # C45785 that made your Class II 1-1/4" hitch receiver a 2" receiver and you had a 300 lb tongue weight capacity, the adapter would reduce the capacity to 150 lbs, which would be the maximum weight your bike racks and bikes could weigh; there are great racks for a Class II hitch that...
    view full answer...
  • Effects on Weight Capacity from Using Hitch Adapters
    Hitch adapters can be a convenient way to join accessories of different sizes, such as allowing use of a 2-inch hitch bike rack or towing ball mount in a smaller 1-1/4-inch hitch. Examples of such items are MaxxTow # MT70355 and Curt # C45785. These both provide the same function but the MaxxTow also has 4-1/2-inches of rise built-in to give you more ground clearance for using a bike rack, for example. The "dark side" of hitch adapters like these is that they also unavoidably reduce...
    view full answer...
  • Hitch-Mount Trike Carrier for 1-1/4-Inch Class II Hitch
    I understand your predicament, having a hitch and hitch bike rack that will not work together. Smaller vehicles typically accept smaller hitches, and for your 2018 Ford EcoSport compact SUV only 1-1/4-inch Class II hitches are offered since the car itself cannot handle the load that a 2-inch Class III hitch typically can. We offer 1-1/4-inch Draw-Tite # 36660 and Curt # C12188 hitches both of which are rated for 350-lbs of tongue weight. Hitch adapters like # MT70355, # HTAD, # HT5R,...
    view full answer...
  • Hitch Adapter for Bike Rack on 2017 Volkswagen Golf
    The Curt Trailer Hitch Receiver Adapter # C45785 does have different measurements than an adapter that is compatible with a Class I hitch, the Brophy # HTAD, as well as different capacities. For example, the Curt adapter is 6" from center of hitch pin hole to center of hitch pin hole while the Brophy is 7-1/4". The Curt is also rated for a tongue weight of 350 lbs while the Brophy is rated for 300 lbs. So the solution for you would be to use the appropriately rated Brophy # HTAD with Curt...
    view full answer...
  • Do They Make a 2 Inch Trailer Hitch for a 2005 Volvo S80
    The only trailer hitch receiver they offer for your 2005 Volvo S80 is the Curt Trailer Hitch Receiver part # C12285 which has a 1-1/4" receiver tube opening. Therefore, no they do not offer a trailer hitch receiver with a 2" receiver tube opening on your 2005 Volvo S80. You can obtain a 2" receiver tube opening by using the Curt Trailer Hitch Receiver Adapter part # C45785 but please keep in mind that this will reduce the weight capacity of your trailer hitch by 50%. If you can tell...
    view full answer...
  • How To Carry Four Bikes on a 2016 Lincoln MKZ
    There is a possibility that you can use the Reese Q-Slot Platform-Style 2 Bike and 4 Bike Rack part # PS63138 with the Curt Trailer Hitch Receiver part # C12091 on your 2016 Lincoln MKZ. However, the adapter you need, Curt Trailer Hitch Receiver Adapter part # C45785 will reduce you weight capacity by 50%. Therefore, the total weight of your four bikes cannot exceed 109 lbs. If they do not then you can use the Reese Q-Slot but you will also need the Curt Cam Buckle Stabilizing Strap part...
    view full answer...
  • Using A 4 Bike Carrier On A 1-1/4
    I have an adapter that will allow for you to use a 2" bike rack on a 1-1/4" hitch receiver, however, the Replacement Aluminum Hitch Adapter Sleeve for Saris part # SA3032 is designed for a 2" receiver. In order to mount your Saris Bike Porter Bike Rack on a 1-1/4" hitch receiver, you will need to use an adapter like the Curt Trailer Hitch Receiver Adapter part # C45785. However, the maximum number of bikes allowed to be hauled on a Class I hitch receiver is 2 and your tongue weight will...
    view full answer...
  • 2 Inch Trailer Hitch Receiver Compatible With 1991 Volvo 240
    For your 1991 Volvo 240, there is only one hitch available and it is not a Class III. This is most likely due to the vehicle weight capacities given by the manufacturer that would limit the hitch capacity. I know you were specifically looking for that 2 inch receiver, but the Class II with the 1-1/4 inch receiver is all that is available as a fit. If you want a trailer hitch receiver on this vehicle, you will want the Curt Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4" # C12207...
    view full answer...
  • Recommended Trailer Hitch Adapter To Expand Hitch On 2015 Ford C-Max
    For the Yakima Rack and Roll Trailer - 66" # Y08106, you will only need a 2 inch ball that you already have with your Weigh Safe adjustable ball mount. The adapter for the trailer hitch on your 2015 Ford C-Max I recommend is the Curt Trailer Hitch Receiver Adapter - 1-1/4" (Class II) to 2" - 6 Long # C45785. This will reduce your hitch receiver's tongue weight capacity by 50%. Based on the application, this should not be an issue, but this would not be wise for any larger application. To...
    view full answer...
  • Recommended Trailer Hitch Receiver and Towing Components for 2017 Honda Accord Sedan
    The Curt Trailer Hitch Receiver - Custom Fit - Class I # C11681 is a confirmed fit for your 2017 Honda Accord Sedan and at this time there is not a Class II hitch available. If you will be towing with this hitch, I recommend the ball mount # C45521 and hitch ball # A-80 for a 1-7/8 inch ball or # A-82 for a 2 inch diameter hitch ball. You will also need a pin and clip like # F-4 to secure your ball mount. For trailer wiring, I recommend the Curt T-Connector # C56299 which will connect...
    view full answer...
  • Can the Curt Adapter # C45785 be Used with the Class II Draw-Tite # 36554 on a 2016 Buick Encore
    You can use the Curt Trailer Hitch Receiver Adapter # C45785 with the Class II Draw-Tite Trailer Hitch Receiver # 36554 on your 2016 Buick Encore but the problem is that the adapter reduces the overall weight capacity of the trailer hitch by 50%. This means that this trailer hitch will be able to tow 1,750 lbs and has a tongue weight capacity of 150 lbs. The other thing to note is that you will experience more play in the receiver with the adapter. If you were to use the 24x60 Curt Cargo...
    view full answer...
  • Trailer Hitch Fits for 2012 Lexus RX 350 for Use of Cargo Carrier
    The only size/class of trailer hitch offered for your 2012 Lexus RX 350 is the 2-inch Class III type like those shown on the linked page, such as Curt # C13143. I checked directly with both Draw-Tite and Curt and neither offers a 1-1/4-inch Class II hitch for your RX 350. You might refer to the linked article for help confirming your hitch size. There should also be a sticker on your hitch that indicates its class rating. Unless you had a custom-made hitch installed on your Lexus yours...
    view full answer...
  • Carrying a 2 Inch Bike Rack on a 2003 Subaru Outback
    The only trailer hitch receivers available for your 2003 Subaru Outback are 1-1/4 inch hitches. Between them I recommend the Curt part # C12270 if you don't already have a receiver. . To keep using your 1Up bike rack you can use a hitch expander like our part # C45785. This does decrease your hitch's capacity by 50 percent but since the hitch's tongue weight rating is 350 pounds you still likely have enough for a bike rack and some bikes. The other option is to replace your bike rack...
    view full answer...

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Info for this part was:

Edited by:
Lindsey S
Expert Research:
Jameson C
Video by:
Joshua S
Video Edited:
Jacob T
Installed by:
Cole B
Installed by:
Ryan G
Written by:
Chelsea B
Updated by:
Sarah W
Updated by:
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Updated by:
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Updated by:
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