Correct Curt Flex Air 5th Wheel Pin Box for a 2021 Keystone Alpine 3910RK
Question:
I am trying to upgrade my Keystone Alpine 3910RK pin box to a Lippert/Curt Flex Air Ride pin box. I’m having trouble finding which one to buy. I’ve sent a picture of the label on the current pin box.
asked by: Jon E
0
Expert Reply:
The correct Curt Flex Air 5th Wheel Pin Box for a 2021 Keystone Alpine 3910RK is part # LC328492. I confirmed this with Lippert/Curt for you as well. This is a direct bolt-on replacement that will do an excellent job of absorbing road shock and providing a smooth ride.
expert reply by:
Conner L
0
Product Page this Question was Asked From
Curt Flex Air 5th Wheel Pin Box - Lippert 1621 - 18,000 lbs
- Fifth Wheel King Pin
- Upgraded Pin Box
- Absorbs Road Shock and Reduces Chucking
- 18000 lbs GTW
- Fixed Turret
- Lippert 1621
- CURT
more information >
Featured Help Information
Instructions
Continue Researching
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Q&A: How To Determine Which Pin Box I Have and What Replacements Are Available
- Q&A: How to Determine the Pin Box Manufacturer and Model on a 5th Wheel Trailer
- Q&A: Comparing Rota-Flex and Gen-Y 5th Wheel Pin Boxes
- Q&A: Why Would Flex Air Pin Box Cause Trailer to Sit Nose High
- Q&A: Replacement Pin Box Options For a 2022 Keystone Cougar 316RLS 5TH Wheel Camper
- Q&A: Comparison Between Trailair Flex Air and Gen-Y Executive Replacement Pin Boxes
- Q&A: What Flexair 5th Wheel Pin Box Fits My 2021 Grand Design Reflection 337RLS?
- Article: Parts Needed to Add Hydraulic Disc Brakes to a Trailer
- Article: Adapters for Towing a 5th Wheel Trailer with a Gooseneck Hitch
- Article: Sidewinder with Rotating Turret for Short Bed Pickups
- Article: Fifth Airborne Replacement Trailer King Pin with Air Cushions by Fifth Gear
- Article: Best 5th Wheel to Gooseneck Adapters (2023)
- Article: Fifth Wheel Trailer Hitch Information and Installation Tips