Do Gooseneck Hitch to 5th Wheel Pin Box Adapters Have Warranty Implications  

To determine the clearance for a 5th Wheel to Gooseneck pin box like the Goose Box #RP85FR use the following formula: (A + B) - C = Clearance A = Distance from center of gooseneck ball to truck cab B = Length of offset (which is zero for these pin…

The Reese Goose Box #RP85FR that you referenced should work just fine with the recessed gooseneck ball on your flat bed truck but there are a couple of measurements I recommend taking to verify this. The Goose Box measures 7-1/2 inches at its widest…

If you take a look at the dimensional drawing of the Reese Goose Box #RP94720 I attached, you can see that it measures 18.56 inches from the middle of the bottom bolt hole and the bottom of the coupler where the ball connects, so not the…

If your 2020 GMC Sierra 3500 doesn't have already have a gooseneck ball hitch in the bed you'll need the Curt Custom Underbed OEM-Style Gooseneck Trailer Hitch - 32,500lbs Item #C60642. Since you currently have a Lippert 1621HD pin box the…

From the images that I can find on your 2021.5 Forest River Sabre 377FLL it appears that it uses the Lippert 1621 pin box. The Reese Goose Box 5th-Wheel-to-Gooseneck Adapter #RP85FR is the correct replacement for the Lippert 1621 pin box. You can…

I sent the picture and info you sent us to Lippert to confirm what pin box you have and they told me it was a Lippert 1621 so the Goose box part #RP85FR that you referenced would be exactly what you'd need. I was also able to confirm that your…

We can tell you how to determine the correct Goose Box that will fit your 2021 Fuzion 429 toy hauler, but that will depend on the current model of pin box you have now, and we don't have a way of knowing what is currently on it. So to determine…

Since you have a Trailair Rota-Flex Pin Box like the #LC328329 you more than likely have a Lippert 1621 or 1116 bolt pattern. You will, however, need to identify and verify which pin box you currently have. This can often be found on a sticker on the…

The Gen Y Hitch Pin Box product #GY58GR weighing 93lbs offers 21,000lbs towing capacity and is designed to replace Lippert 1621 and 1621 HD 5th-wheel pin boxes. Reese Goose Box offers a 16,000lbs towing capacity product #RP94716-61301 that weighs…

We do have fifth wheel to gooseneck adapters similar to the Goose Box that fit in place of the Lippert Rhino Box like with the #GY98GR which has a 21k capacity, the part #GY45GR which has a 25k capacity, or the part #GY53GR which has a 30k capacity.…

I would love to help, but you will need to confirm which pin boxes are currently on your 2020 Keystone Montana High Country 305RL and 345RL to see if one of the Reese Goose Boxes will fit as we do not have a way to determine which pin box was…

The Reese Goose Box 5th-Wheel-to-Gooseneck Air Ride Coupler Adapter #RP85FR is only a confirmed fit for Lippert 1621, 0719, 1621HD, and Fabex PB-600 Series Pin Boxes. It measures from the center of the ball pocket forward to the front of the Goose…