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

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

Part Number: C45785
In Stock
$59.35
Hitch Adapters
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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. 1-800-940-8924 to order CURT hitch adapters part number C45785 or order online at etrailer.com. Free expert support on all CURT products. Great prices 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 (239)
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CURT Hitch Adapters - C45785

Highlights

  • Transforms Your Hitch Size: Converts a 1-1/4" Class II hitch to a 2" hitch receiver.
  • Versatile Use: Perfect for bike racks, cargo carriers, and other 2" hitch accessories.
  • Durable Construction: Made from strong steel with a gloss black powder coat for rust resistance.
  • Extended Length: Provides additional clearance with a 6" length from pin hole to pin hole.
  • Reduces Weight Capacity: Note 50% reduction in hitch weight capacity when using this adapter.
  • Precision Fit Specs: 10" overall length with tailored pin hole diameters; 1/2" & 5/8".

Features to know about

Expand Hitch Options with Ease: Hitch Expander for Multiple Accessories

Transform your 1-1/4" (Class II) hitch receiver into a versatile 2" receiver with the Curt Hitch Adapter. This handy piece allows you to easily attach any standard 2" hitch accessory, such as bike racks and cargo carriers, giving you more options for your outdoor adventures. It’s designed specifically for Class II hitches, ensuring a solid fit and improved functionality for all you want to take with you.

Extend and Protect: 6 Inch Hitch Extension

Need a little extra length for your hitch-mounted accessory to clear your bumper? The Curt Hitch Adapter comes with a 6-inch extension, ensuring that your bikes or cargo won’t bump against your car. It helps to keep your accessories secure and your vehicle protected from unwanted scratches.

Built to Last: Strong Steel Construction

Constructed from strong steel, the Curt Hitch Adapter ensures durability and reliability, even under heavy loads. Its gloss black powder coat finish provides superior rust resistance, keeping it in great condition, rain or shine, for any journey you embark on.

Simple Compatibility: Fits 1-1/4 Inch Hitch Receivers

Designed specifically for 1-1/4" x 1-1/4" trailer hitch receivers, this adapter is built to fit Class II hitches seamlessly. It’s an ideal solution for anyone with a Class II hitch looking to use 2" accessories without the hassle of changing hitches.

Weight Warnings: Reduced Tongue Weight Capacity

When using the Curt Adapter, be mindful that it reduces your hitch's weight capacity by 50%. It’s a critical consideration for safety, especially if you're transporting heavier items. Use it with non-towing applications and avoid overloading to maintain performance and safety.

User-Friendly Features: Pin Hole Diameter Specs

The Curt Adapter features specific pin hole diameters - 1/2" for the 1-1/4" receiver and 5/8" for the 2" receiver. These measurements are essential for selecting the right hitch pin, ensuring your accessories are securely fastened with minimal wobble or movement.

Specs

Application

  • Application: 1-1/4" x 1-1/4" trailer hitch receivers
  • Fits: Class II hitches only

Receiver Size

  • Receiver size: 2" x 2"

Weight and Capacity

  • Maximum tongue weight: 350 lbs

Dimensions

  • 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"

Warranty

  • 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




California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.7

239 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.

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See what our Experts say about this CURT Hitch Adapters

  • 1-1/4 inch to 2 inch Hitch Expander that is Class I Hitch Compatible
    Hey Dylan, so we have the Brophy hitch expander part # HTAD which is Class I compatible but the adapter you mentioned can only be used with Class II hitches so it wouldn't work for you.
    view full answer...
  • Hitch Adapter Needed For A Thule 916XTR T2 Bike Rack On A Honda CR-V With A 1-1/4" Hitch
    Hey Michael, Since your Honda has a 1-1/4" hitch you'll need an adapter like the Curt Trailer Hitch Receiver Adapter # C45785. This adapter has the shortest hitch pin hole to hitch pin hole measurement at 6" so it'd be the best option to keep the rack closer to vehicle, but it does come with some drawbacks. Hitch adapters like this would reduce the overall capacity of the trailer hitch by 50%, which typically makes a low capacity 1-1/4" trailer hitch almost unusable. You'll also want...
    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 me...
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  • 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. However, if you do not yet have a hitch yet, we have great news. We have the EcoHitch Hidden Trailer Hitch Receiver # 306-X7322 that has a 2" opening and a 300-pound tongue weight capacity. With this hitch, you could use the Thule Hitching Post Pro 4-bike rack # TH934XTR. I attached a video of these products...
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    Image 1 for
  • 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...
  • 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. An example of such an item is the Curt # C45785. The "dark side" of hitch adapters like these is that they also unavoidably reduce your hitch's capacity by 50-percent because they move the actual load that is on the hitch further away. This greater distance translates into more leverage applied to the hitch...
    view full answer...
  • 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...
    Image 1 for
  • 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, the...
    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...
  • Could etrailer Anti-Rattle Hitch Lock be Used in Curt Hitch Adapter
    The Anti-Rattle lock for 2" hitches # 63232 can be used in the Curt hitch adapter part # C45785.
    view full answer...
  • Trailer Hitch Receiver For 2018 Buick Regal TourX Using 2 Bike Rack and Cargo Carrier
    The Curt Trailer Hitch Receiver # C12173 is only available with a 1-1/4" receiver tube on your 2018 Buick Regal TourX. You can use a Curt Trailer Hitch Receiver Adapter # C45785 to allow you to still use your 2" hitch mounted accessories. The adapter does reduce the receiver capacity by 50%, which would allow you to carry 175lbs with the Draw-Tite receiver. I recommend using a Roadmaster Quiet Hitch for 1-1/4" Trailer Hitches # RM-061-125 to remove the rattle in the adapter to the receiver...
    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 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...
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  • 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...
  • Best Option Hitch for 2008 Chevy Malibu LTZ
    I recommend the Curt Class II Receiver Hitch # C12051. This is a custom fit 1-1/14" hitch for your LTZ model 2008 Chevrolet Malibu. If you need a wiring harness I suggest # 46255. We have actually have video that covers your specific make/model and year vehicle; I have attached a link below. It is identified in this video that this hitch may set back slightly more than typical, and may require an extension for use with some accessories such as a bike rack. There are receiver adapters...
    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 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 of Curt #...
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    Image 1 for
  • Does the Curt Hitch Adapter # C45785 Come with a Hitch Pin?
    The Curt Trailer Hitch Receiver Adapter - 1-1/4" (Class II) to 2" # C45785 does not come with a hitch pin. If you are in need of a hitch pin for the 1-1/4" end of the receiver, that is the # 5200. For the 2" receiver end, that is the # e98880. Both of these are locking pins in order to protect your adapter as well as your hitch-mounted accessories.
    view full answer...
  • Can the Curt Adapter # C45785 be Used with the Class I Curt # C11527 on a 2016 Buick Encore
    You can use the Curt Trailer Hitch Receiver Adapter # C45785 with the Class I Curt Trailer Hitch Receiver # C11527 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 1,000 lbs and has a tongue weight capacity of 100 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 Carrier...
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  • Anti-Rattle Option for Curt Hitch Adapter C45785
    While we do have an anti-rattle option for you, there isn't an anti-rattle hitch pin that will work with the Curt Trailer Hitch Receiver Adapter - 1-1/4" (Class II) to 2" # C45785. The best option that will reduce the rattle with this adapter is the Roadmaster Quiet Hitch for 1-1/4" Trailer Hitches # RM-061-125. This will attach to your hitch and you'll tighten the U-bolt, which in turn will tighten the adapter to ensure a quieter, rattle-free ride. I have added a link below to a video...
    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...
  • Best Way to Convert Yakima HoldUp to 1-1/4 inch Hitch Size
    You can use hitch adapters like the # C45785 to carry a bike rack but you should note that doing so does cut the hitch capacity by 50 percent so it's not typically the best option. Your best option would definitely be the part # Y8890278 to convert your Yakima Holdup to the correct size for the hitch on your vehicle.
    view full answer...
  • Will Trailer Hitch Adapter Reduce Tongue Weight Rating Of A Vehicle?
    You are correct that the Curt Trailer Hitch Receiver Adapter # C45785 you were looking at will reduce the capacity of your trailer hitch receiver by 50%. This will not necessarily reduce the tongue weight rating of your vehicle, as the hitch manufacturers test the hitches independently of the vehicle and have not tested the effects on a specific vehicle. With that said I would reach out to the manufacturer of your vehicle to get there input on this, but until then I would error on the...
    view full answer...
  • How Do The Hitch Covers Install On A 2007 Ford Explorer SportsTrac With A 1-1/4 Inch Hitch
    Most of the hitch plugs and hitch covers are designed that the plug or the shank on the hitch cover will slide into the inside of the hitch receiver. The lip on the end of the hitch should not interfere with installing the correct 1-1/4 inch size hitch cover on your 2007 Ford Explorer. The rubber hitch plugs, like the Draw-Tite Rubber 1-1/4 Inch Tube Cover, # 2211, will just push into the opening and does not require a pin to hold it in place. The hitch covers that use a shank like the...
    view full answer...
  • Hitch Reciever and 2 Inch Adapter for Using a Kuat Bike Rack on a 2010 Toyota Corolla
    I recommend using a 1-1/4 inch to 2 inch adapter on your 2010 Toyota Corolla to use your Kuat bike rack . The Curt Trailer Hitch Receiver Adapter - 1-1/4" (Class II) to 2" - 6" Long item # C45785 has a maximum tongue weight of 350 lbs which will be enough for your application but the adapter reduces your vehicles tongue weight by 50%. Depending on the type of Kuat bike rack you're using we do offer an adapter that allows you to utilizer your 1 1/4" hitch receiver without an adapter that...
    view full answer...


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