1. RV & Camper
2. 5th Wheel Pin Box
3. Lippert 1621HDx
4. Reesex

I spoke with my contact at Trailair and from your serial number we were able to determine that your trailer came with a 1621 HD pin box which is a long pin box style. I was unable to obtain the exact part number for your Trailair pin box but from…

Hello Randall. I had the folks at Lippert run the serial number of your pin box. Your pin box uses the 1621 bolt pattern which is quite common. If you are looking for a shock absorbing pin box replacement, you can use the Curt Air Ride 5th Wheel…

Thanks for the photo, David! The pin box on your 2022 Salem Hemisphere 369BL is a 1621 model with a 15.5K weight rating. To replace this with a Rota-Flex you need the part #LC328330. This is rated for 18K, but the extra bit of capacity won't…

Hey Donald, thanks for reaching out! I recommend using the MORryde Cushioned Pin Box #MR84VR over the Curt Rota-Flex #LC328330 any day because it has better cushioning technology. Back in the day when the Rota-Flex was first released it was…

Great question, Jeff! When the Rota-Flex first came out it renovated what a pin box could do and be, but at this point in time that technology is a little more dated and the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box #325-GH-8040 is the…

Hello Stephen. The Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks #RM-2460-2580 will work great on your 2024 Brinkley Z3110 5th wheel since it has 3" diameter axles. The Comfort Ride kit will make huge improvements in ride…

Hi David; thank you for providing that information and the pictures. It looks like your Blackthorn 3101RL-OK has a GVWR of 14,040 lbs. That means the best choice for a MORryde Cushioned Pin Box is the #MR83QR. This is designed to fit a Lippert…

The MORryde Cushioned 5th Wheel Pin Box #MR84VR you were looking at has a total height of 11.35" (pictured below) so you wouldn't see much of a difference from the standard pin box you currently have. Based on what you've stated and the…

When adjusting the height of a pin box such as #LC1191191 it is important to support the pin box when removing the bolts. I recommend 2 or 3 buddies to give you a hand and make sure no one is beneath the pin box while raising or lowering it. With the…

If you check out the sticker or plate on the pin box of your trailer currently there will be a model number listed that will help us identify what pin box you have and then from there pick out the correct Goose Box. If not there is a way you can…

Yes. The MORryde Cushioned 5th Wheel Pin Box for 14K to 18K Trailers w/ Lippert 1621HD #MR84VR can be used to replace a Lippert 1621 or 1621HD; this pin box replacement is designed for trailers with GVWR up to 18,000-lbs so it is rated properly for…

The MORryde Cushioned 5th Wheel Pin Box #MR84VR is going to be the same length of 17-3/4" from the center of the king pin to the center of the front mounting bolts. Do understand this measurement is the horizontal distance only and does not…