Recommended A16 5th Wheel Legs for the 2020 and Newer GM Puck System  

The Curt A16 fifth wheel hitch that fits directly to the OEM rail kit of your 2024 GMC Sierra 2500 is the part #C74FR which means that for just the leg kit you'd need the #CU53FR.

Yes the Curt fifth wheel leg kit part #CU53FR that you referenced does fit your 2021 GMC Sierra 3500 OEM rail kit and also fits the Curt A16 fifth wheel hitch head you have as well. This would essentially give you a #C74FR.

Yes, you can remove the Legs #C16904 from your Curt Q20 5th Wheel Hitch #C16130. Then you will be able to bolt the Head #C16530 to the Curt R20 Round Tube Slider #C16550. I recommend using new Hardware #C16125-SK4 when you move the head to the new…

For replacement rails only, I suggest the Husky Universal Base Rails for 5th Wheel Trailer Hitches #HT30686. These base rails provide the attachment points for mounting your fifth-wheel trailer hitch in your truck bed and compatible with Curt,…

The Replacement Hardware for Curt A Series and Q Series 5th Wheel Hitches #C16125-SK4 contains 4 new bolts, flat washers and lock washers for your Curt A16 5th Wheel Trailer Hitch #C16120 to a set of fixed legs. We also have the Replacement Head…

According to my contact at Curt, the #C16125-SK4 is indeed the correct hardware you're needing. The center section of the hitch is threaded, so no nuts are necessary.

To convert your Curt A16 hitch to fit directly to the OEM rail kit of your 2021 GMC Sierra 3500 all you need is the leg kit part #CU53FR and you'd be set.

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

The head alone for the B&W Companion hitch #BWRVK3500 weighs about 70 pounds. Everything else weighs about 130 pounds. So the total weight of the hitch is approximately 200 pounds.

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…