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Curt Fifth Wheel - Sliding Fifth Wheel - C16521 Review

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Review of Curt Fifth Wheel C16521

Today we're going to review part number C16521. This is the Curt Q16 Fifth Wheel Trailer Hitch on the Curt R16 Slider. This hitch is a dual jaw design. Has a 16,000 lb weight capacity. For demonstration purposes I do already have this mounted on the base rails and the mounting brackets just to give you an idea what this would be like installed in your truck bed. The base rails and the brackets would be sold separately.

This hitch is a 2 jaw locking system which will help provide a 360 degree jaw to kingpin contact right here. Gives you less rattle, more security than a slide bar model. Again, for demonstration, I have a replica of a kingpin installed in here and you can see the dual jaw wrapped around it. On the back of this hitch head there is a 3 point color code indicator system. This color coding will tell you if the hitch is ready to uncouple, couple, or tow and basically you can see these colors right here when you're in the cab of your truck.

They are visible from the cab. The head on this is a fully articulating torsion head. It's for controlled coupling, stable quiet ride. It does move side to side and front to back. It is cushioned also for a nice smooth ride. The slider that it's mounted on is a non-binding slider and this will provide clearance which is required for short bed pickups to turn safely at slow speeds and that will help prevent the trailer from hitting the cab of your pickup during those sharp, slow speed turns.

It slides smoothly on these rounded, non-binding rods and these are designed for use on trucks with beds shorter than 8'. It's not recommended for use on truck beds that are shorter than 6'. The lockable handle right here, you can see, let's you easily secure the trailer to the hitch and it comes with this pin and clip. It is also large enough that you could put a padlock through there if you want additional security. The padlocks would be sold separately.

It is a very short throw, single hand operation. The self aligning head will pivot for simple hookup. It does have 3 lube points on it for easy access to the grease fittings. You can remove this head by itself. In one piece it would be pretty heavy for 1 person to do, but to help you remove it, basically, it's a 2 pin head removal system. If you pop off this lynch pin right up here in front, I'll just show you, slide that out and then this pivot pin right here you can pull out. That 1 pivot pin, this large pivot pin, will pull out. That will allow you to lift that head out with a cross member and you can take the cross member out and then the slider. Let's go ahead and put the lynch pin back in here. There we go. It does come with this included plastic lube plate that you put on your kingpin of your fifth wheel, helps it glide smoothly onto the hitch during hookup. It also includes the pins and clips right here that you attach this to the rails, and it also includes these rubber, there's 4 rubber sound dampeners. They have a little slot in them. Basically, what you would do with these is where the slider drops down onto the rails, there's tabs on it, this would go where the tab is and it will give you a rubber dampener between the slider and the rails. It helps eliminate any rattles or noise. It does have a 4" height adjustment. Let me turn this a little bit just to show you. If you look on the side cross member right here, on the cross member itself there is a range of 3 holes so you can move those holes up or down to give you a 4" height adjustment. Basically that will get you, for your particular application, you want your hitch head measurement from your truck bed to the top of the hitch head to be a certain measurement so this will give you a range of anywhere from 17 1/2" to 21 1/2". As I mentioned, the base rails, the mounting kits are sold separately. This will work on industry standard rails made by Curt, Draw-Tite, Hidden Hitch, Pro Series, Reese, and Valley. We do recommend on the mounting brackets to make installation easier to use a vehicle specific or a custom fit bracket kit and the reason we do that is, it's not available in all applications, what I'd recommend is on our website put in your year and model vehicle and see if there is a custom, vehicle specific bracket kit. If there is it cuts the installation time about in half because the brackets right here that go to the frames will already have holes drilled in it to line up with holes in your truck frame. Saves you a lot of time when compared to a universal bracket kit. This is a sturdy steel construction, has a durable carbide powder coat finish. Again, the specs on it, gross towing weight capacity is 16,000 lbs. Vertical load limit or pin weight capacity is 4,000 lbs. The slider does move 12" front to back for extra clearance and again, the height adjustment goes anywhere from 17 1/2" to 21 1/2". First I want to show you how this kingpin would go into the hitch. Let's go ahead and remove the pin and clip and then what you can do is, to uncouple it you just pull this handle out and move it towards the cab of tow vehicle and it will slide out the kingpin. Then you can see it's ready to couple. I'm going to turn it around. I mentioned those 3 point color code indicator system. We spin this around, you'll be able to see it on the back of the head right here. Right now, with the kingpin out, you can see yellow is showing, that means it's ready to be coupled. It also shows you green, When that green shows there it means it's ready in the tow position. If it shows red it's uncoupled. You don't want to go anywhere. Just to show you, I'm going to slide this kingpin in and when I do that you'll see that it changes. That color you can see from your cab would be green now. The handle's slid up, locked into position and you just drop your pin and clip through, lock it and your ready to go or you put a padlock through there if you want to. On the slider itself, it is the same way. It does have color coding. You can see over here, the green indicator. When this is showing means it's ready to tow, so it's in the locked towing position. Over here, if the red would show, that means it's not ready to tow and basically I just want to show you how you would do that. Here's your handle for your slider. You just pull this out. Let's spin it back around so we have the right positioning, not to confuse you. If we spin this around where this is where I'm standing would be the cab of your tow vehicle and that would be the back of your truck. If you want to put it into maneuvering position, you want to slide it back to the tailgate to gain more clearance when you're doing sharp turns, what you'll do is pull out on this slider handle and when you do that you just turn it a little bit to counterclockwise position. It moves that tab to the front. What that will allow you to do is when you go into maneuver position you can see the hitch will slide and when it reaches the full 12", it will lock into position. Then, when you're done maneuvering and you're ready to get on the road to tow, all you want to do is same way, pull this out but just turn it clockwise this time. Move the tab towards the tow vehicle. With it that way, then when you're pulling away it would slide into the towing position, moves it closer to the cab of your tow vehicle, boom, locks into position. The green shows here and nothing over here. That should do it for the review on part number C16521, the Curt Q16 Fifth Wheel Trailer Hitch, on the Curt R16 Slider, with a 16,000 lb weight capacity. .

Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Robert C
Test Fit:
Robert C
Employee David F
Test Fit:
David F
Employee Schuyler H
Video by:
Schuyler H

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