Upgraded Cushioned Pin Box Recommendation for 2020 Grand Design
Question:
I want to replace the pin box on my 2020 grand design 5th wheel. It has a trail air rota flex 18000 on it now. Terribly rough ride. Serial tag on the box on the trailer is 573FR3226L3413889. The pin box width is 12, hole width is 7 7/8,head size is 15/16, of bolts is 5, distance between bolt holes top to bottom is 1inch c to c, from front row of bolt center to pin center is 16.75 and rear to pin center is 24.5. I believe this is a med length pinbox. I would like to put an air ride on it. This is what was on my previous 5th wheel. Do I have to stay with the med length pin box or am able to install a long pinbox. Would there be any advantage to that. My truck is a 2005 Dodge Ram 3500. I have a slider with installed as it is a shortbox. Which hitch would I need? I hope Ive included enough info. Thanks, Rick
asked by: Rick D
Expert Reply:
Hey Rick, thanks for all of the dimensions of your pin box. Based on that you have a Lippert 1621 style which is an extended pin box and not a medium. The best cushioned pin box replacement would be the Curt Flex Air part # LC328492 which has vertical and horizontal cushioning and is considered to be the best cushioned pin box around.
Product Page this Question was Asked From
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs
- 5th Wheel Pin Box
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs GTW
- Fixed Turret
- Lippert 1621
- CURT
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