Is There A Way To Move A Pin Box Higher On The Mounting Ears On A Grand Design Momentum 399TH
Question:
I just bought this pinbox used and installed it on my 2018 Grand Design Momentum 399th. I tried to mount it on the highest set of holes on the frame but the front of the raised area near the holes was interfering with the frame. So I have it in the 2inch lower position. This makes my rig over 2inch higher in the front than what I want it. This is even after I lowered my 5th wheel plate by 2. Do you have any suggestions on how I can get it to use the other set of holes? Ive thought about slotting the holes by 1/4inch to allow the bolts to fit. The pictures show it installed in the holes 2inch lower than what they need to be in. Thank you
asked by: Dylan C
Expert Reply:
I do not recommend enlarging the holes to move the pin box up higher since it takes a lot of pressure and will most certainly move up when you hit a rough patch of road and end up pinching the trim. You would need to cut out the trim and walls around the pin box to allow for the pin box to go higher or try to offset the increased height. You can try lowering the 5th wheel hitch 2" to level the trailer back out or try raising the suspension with the Correct Track Trailer Alignment and Lift Kit # RR23QX in order to level the trailer back out.
(click to enlarge)
Products Referenced in This Question
Correct Track Trailer Alignment and Lift Kit - Tandem Axle
- Trailer Suspension Parts
- Alignment and Lift Kits
- Boat Trailer
- Camper
- Car Hauler
- Snowmobile Trailer
- Utility Trailer
- Slipper Springs - 2 Inch
- Tandem Axle
- RV Ride Control
more information >
Product Page this Question was Asked From
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 21,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 21000 lbs GTW
- Fixed Turret
- Lippert 1621
- CURT
more information >
Featured Help Information
Instructions
Continue Researching
- Video: Review of Demco Fifth Wheel Hitch - Lippert Locking Plate - DM76FR
- Shop: Demco Autoslide Locking Plate for Lippert Rhino Pin Boxes
- Shop: Demco Autoslide Capture Plates for Trailair Rota-Flex Pin Boxes
- Q&A: Recommended Clearance Dimensions Between Truck Bed Rails and 5th Wheel Trailer
- Shop: Portable Power Watchdog Surge Protector with Bluetooth and Emergency Shut Down - 30 Amp
- Q&A: How to Adjust the Height of a 5th Wheel Trailer Pin Box
- Shop: Equa-Flex Cushioned Equalizers - Double Eye Springs - Tandem Axle - 6K to 8K
- Shop: B&W Companion OEM 5th Wheel Trailer Hitch w Slider for Ford Towing Prep Package - Dual Jaw - 20K
- Shop: B&W Companion OEM 5th-Wheel Hitch for Ford Super Duty Prep Package - Dual Jaw - 20,000 lbs
- Shop: MaxxFan Deluxe Roof Vent w/ 12V Fan - Manual Lift - 4 Speed - Smoke
- Q&A: Recommended Fifth Wheel Hitch for 2018 Ford F-250 With a Short Bed
- Q&A: How To Raise A 5th Wheel Trailer With Torsion Axles To Get More Bedrail Clearance
- Q&A: Can Andersen Ultimate be Used With Rotating Pin Box in 2017 Ram 2500 With Factory Pucks
- Q&A: Weight Of The Curt Q24 5th Wheel Trailer Hitch w/ Slider for Ford Towing Prep Package
- Q&A: Lowering Height at Front of Fifth Wheel Trailer By Adjusting Pin Box
- Video: B and W Companion OEM 5th Wheel Trailer Hitch Installation - 2021 Ford F-250 Super Duty
- Video: B and W Fifth Wheel - Fixed Fifth Wheel - BWRVK3200 Review
- Video: Manufacturer Review - Demco Autoslide 5th Wheel Trailer Hitch
- Video: Demco Hijacker Autoslide 5th Wheel Hitch Installation - 2022 Ford F-250 Super Duty
- Video: B and W Companion 5th Wheel Trailer Hitch with Slider Installation - 2019 Ford F-250 Super Duty
- Search Results: lippert lift kit
- Shop: Trailer Hitch
- Search Results: 25580
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Shop: Trailer Wiring
- Article: Trailer Wiring Diagrams
- Video: Choosing the Best Fifth Wheel Hitch
- Search Results: 60692
- Search Results: 90160
- Article: Gooseneck to 5th Wheel Adapters
on Fifth Wheel King Pin
