Recommended Pin Box to Reduce Chucking When Used with PullRite ISR 2400 Superlite 5th Wheel Hitch

Question:

Can I still use my Pullrite with the 5th Airborne? What is the measurement from the pin to the first mounting hole.

asked by: Gary S

Expert Reply:

The 2400 ISR Superlite is not made by Reese, but rather by PullRite. You can use the Trailair Air Ride 5th Wheel Pin Box - Lippert 1621 & 1621HD - 21,000 lbs # LC158778 which will help reduce the bounce and jarring. The chucking is more front to back movement and won't be drastically improved with that combination.

For your situation, I recommend the 5th Airborne Premium Fifth Wheel Air Ride Coupler - 21,000 lbs Capacity # 5AB-E1621-610 which is designed to better reduce chucking. They estimate they reduce chucking by 60% with their design, which customers seem to agree they do.

expert reply by: Jason S

Gary

2/25/2019

Can I still use my Pullrite with the 5th Airborne? What is the measurement from the pin to the first mounting hole.

Jason S.

2/25/2019

The king pin to first hole measurement should not change from your factory pin box. The 1621HD has a measurement of 17-3/4 inches from the center of the king pin to the center of the first bolt. This measurement will be exactly the same for the replacement upgrade to the 5th Airborne # 5AB-E1621-610. You won't need a capture plate to use your PullRite ISR 2400 Superlite with this pin box because you aren't using the SuperGlide hitch that requires it for increased turning clearances.