Perfect for what we needed for our 17" Boston Whaler. Good step down adapter. Fits our hitch , received it quickly & good description on the website so we could pick the one most fitted to our needs.

The receiver is the right size but the holes don’t lineup properly to secure it in place with my Chevy Silverado

good for what I'm using it for

The lower end Thule hitch bike rack only comes in one side or the other so I picked the car more likely to be used with a 1.25 hitch. But the other car has a 2” U-Haul hitch and want to use it sometime too. Fits good in the 2” U-Haul hitch. You just have to remember to buy a locking pin through the 5/8 hole to lock the adapter to the hitch and the Thule bike rack can lock inside the adapter itself. So your bikes and rack don’t get stolen!No grease require

(Remember to get a locking/stabilizing hitch pin to prevent wobble/rattle) Does this adapter work? Yes, it does exactly what I needed. My 2" hitch is rock solid, the adapter to 1.25 is strong, but needs a method of bolting tight the adapter. Small issues, but the product is good.

Perfect fit. Well made with excellent finish. High quality.

Perfecto complemento

Great quality product as described, really sturdy. Would recommend a stabilizer bolt kit to keep things extra secure. As the converter also extends the length. That’s great for towing but makes one a bit nervous with say a bike rack. The stabilizer is a good bet for a set up like that. It was easy to install. I’m happy overall.

Excelente calidad y fácil de instalar

Adapt a GMC 2500HD/CHEVY 2500HD -2.5" Receiver to securely install a 1.25" Thule Helium Aero 3 Bike Rack:This Curt Mfg 2" to 1.25" receiver worked perfectly to support my Thule Helium Aero 3 bike rack (any 1.25" hitch bike rack for that matter). I have a 2016 GMC 2500HD with a 2.5" hitch and a 2" adapter sleeve. The problem was getting the bike rack installed securely to the vehicle and without any rattle. The combination of the adapter and anti-rattle kit did the trick. All I had to due was to drill a small hole in the receiver adapter for the anti-rattle kit and use a 3/4" wrench to tighten the bolt. I tested it on a 250 mile trip with two steel frame bikes installed. Arrived at my destination and the hitch and bike rack were still securely connected with no rattle. The good news is that I can open the tailgate without hitting the bikes or bike rack (without engaging the bike rack tilt mechanism).Here's the Recipe:1 - Truck with 2.5" or 2" receiver (Your Choice)1 - Curt 45770 - 2" to 1.25" Receiver Tube Adapter.1 - Curt 22321 - Anti-Rattle KitNeed to drill a small hole in the Receiver tube to support the tab on the anti-rattle nut plate. (See photo's)The Curt 45770 Adapter arrive and appears to be of high quality. It was straight and true with a gloss finish.The Curt 22321 Anti-Rattle kit worked perfectly. It's coated against corrosion. No instructions were includedbut I think the only thing that needs to be done is drill a small hole and file off any part of the alignment tab that sticks out of the hole. Really simple, my stepped drill bit went through the adapter like a hot knife through butter.I hand filed the portion of the alignment tab that protruded through the hole. That's all it takes, very simple.

Note 1: Also purchased the Amazon Basics Expandable Hitch Rack Cargo Carrier Bag, Black, 9.5 cu. ft. expandable to 11.5 cu. ft., 3M 3432 Red Micro Prismatic Sheeting Reflective Tape, 0.125" X 5yd (1 Roll), CURT 45770 Receiver Tube Adapter, and the MaxxHaul 70050 Heavy Duty 5/8"- Hitch Locking Receiver Pin With 2 Keys. I will cross-post this review with a review of those items.Note 2: This review is mine alone and was completed without reimbursement of any kind.Note 3: I live and work overseas. You cannot find US-spec hitch haulers in Germany or on Amazon.de. I used the Amazon Garage and looked at items that would fit my vehicle, however, those items were not available for shipping to an APO (Army Post Office) due to size, weight, or the vendor doesn’t ship to APO addresses. Therefore, I opted for shipment to my German address. The shipping cost was high but I needed this hitch hauler for long-distance trips with a vehicle full of people and little room left for luggage inside the vehicle. A cargo bag on the roof was a cheap option but it can be a mileage killer. Hitch haulers are much easier to load and don’t reduce mileage as much as a roof-top carrier.I purchased the CURT Cargo Basket (48-inch) for use with my US-spec 2015 Highlander LE AWD. I have a factory-installed hitch with a 2” receiver. This item comes with a plastic U-shaped receiver insert to convert the 1-1/4” shank on the Curt Cargo Basket to fit a 2” receiver. Some reviews for the cargo basket noted a wiggle or “play” when using the plastic insert. After test fitting this on my vehicle I can attest to those reviews being spot on. So, I ordered the CURT 45770 Receiver Tube Adapter and the MaxxHaul 70050 Heavy Duty 5/8"- Hitch Locking Receiver Pin With 2 Keys. After fitting the adapter and hitch locking pin first, then the 1-1/4” shank into the adapter, the fit is much more snug. It’s not perfect but there is less “play.” As you will see in the pictures, right out of the box without using the Curt Receiver Tube Adapter, there is about 4-1/2” of offset from the factory-installed receiver to the basket itself. This is enough room for my lift gate to operate with or without the Amazon Basics Bag in place. With the receiver adapter in place, and using the threaded 1/2" hitch pin, there is about 9” of offset and it seems to be just a little too much offset as if there’s not enough of the shank inserted into the receiver adapter (opinion). With the receiver adapter in place and the shank pushed in a little further, past the threaded hole, it feels more secure and there’s about 8” of offset. I’ll use a locking 1/2" hitch pin without threads in this configuration. I also purchased red micro reflective tape and placed that on the sides and back of the cargo basket for more reflectivity. The cargo basket comes with one support that has a small amount of red reflective tape and I didn’t think that was enough. Also, for European drivers, neither your license plate nor your tail lights can be obscured like it is with a bicycle rack. The combination of the cargo carrier and the cargo carrier bag, even when completely full, do not block either my license place or my tail lights.Separately, the Amazon Basic Cargo Carrier Bag is thick, waterproof, and has one zipper to expand the bag and a double zipper to open the bag. The double zippers open away from each other when opening the bag. They and are covered by an overhanging lip with Velcro (hook and pile tape) and the zipper has a waterproofing right up to where the teeth come together. If you’ve ever used a waterproof bag you understand what I mean. The top of the bag has 2” attachment straps with plastic friction adapters (with teeth) that are long enough to wrap around the cargo carrier and back thru the plastic adapters for a secure hold. In the attached pictures you’ll see that I put a medium size cooler and two carry-on size pieces of luggage into the bag with room to spare upward. Most of the width and length are fully used with these three items.Regarding the lock, it works as advertised. The keys turn to the right to unlock the locking head from the hitch pin body. The only drawback is the keyhole cover. The “O-ring” that holds it on to the hitch pin body is very close to the end of the locking head and easily comes off. Other designs put that design feature more towards the receiver side and not the keyhole side.Overall, I like the components I purchased. I have not road-tested anything at this time although I expect all the products to perform well. I may post a follow-up review in late autumn after I take a 650-mile, multi-nation Euro Trip this fall.The reflective red tape was easy to unroll, remove the paper backing from the adhesive, and apply to the cargo carrier’s upper and lower bars for more reflectivity. We’ll see how well it holds after a road trip in hot, cold, wet, and snowy weather. More to follow.

Bought it so that my bike rack is a bit farther away from my car to stop bike handlebar end from hitting car's rear window. But, there is too much play between the hitch receiver and the receiver adapter so that the bike rack moves a bit in all directions and not as stable as when used with the car hitch receiver. Probably works OK when used for a trailer.

This is great when you need to mount a bicycle rack to your 2" receiver. There is some play due to an extra sleeve in the assembly but I was able to use a ratchet strap across the rack to stop the side to side sway. If you have this happening you really need to upgrade your bike rack to a newer model. They're not cheap but they're very nice. For the rest of us thrifty folks who like what they have and are willing to work around the problem, this reducer works perfectly to bring 2" to 1 1/4" without any trouble. You'll need an extra pin lock however. Don't forget this or someone can come along and take your bikes and rack at the same time. Pin locks are reasonably priced on Amazon.