Curt L05 Air Ride Pin Box - 21,000 Lbs

CurtSKU: 158778

Sale price$1,713.44 Regular price$2,719.75
FREE Delivery Estimate January 11 – January 16
⚠️ Delivery times extended due to RV industry holiday shutdown.
Sail Smoothly Through Bumps with the CURT Air Ride 5th Wheel Pin Box
Upgrade your towing experience with the Curt L05 Air Ride Pin Box, designed to handle up to 21,000 pounds. Its internal air bag and built-in strut absorb road shock and vibration, reducing chucking and bouncing for a smoother, safer ride. Built from high-strength steel with a rust-resistant finish, this pin box easily bolts on to replace Lippert 1621 and 1621HD models—no extra hardware required.
---
  • IMPROVES RIDE – With an internal air bag and built-in strut that absorbs road shock and vibration, the Air Ride reduces chucking, jarring, and bouncing, providing a smooth ride that improves handling and limits strain on both the truck and the trailer
  • CUTTING-EDGE SYSTEM – This pin box is uniquely constructed with a built-in shock that protects the air bag from destruction by recoiling the pin box, along with a scissor-like motion that allows it to compress, offsetting bounce and providing cushion
  • SIMPLE INSTALLATION – The Air Ride is ready to be installed as soon as it comes out of the box. It uses the same bolts as the original pin box, so no additional hardware is needed for installation
  • BUILT TO LAST – Constructed with steel and a black powder coat finish that protects against rust, the Air Ride is extremely long-lasting to ensure peaceful towing day after day
  • SPECIALLY DESIGNED – The Air Ride is specifically configured to replace the Lippert 1621 and 1621HD long-jaw 5th wheel pin boxes with a towing capacity of 21,000 lbs.

Bumps in the road are inevitable, but they can be a lot less stressful with the CURT Air Ride 5th wheel pin box. With an internal air bag and built-in strut that absorbs road shock and vibration, the Air Ride provides a smooth ride that limits strain on your truck and trailer by reducing chucking, jarring, and bouncing.

The Air Ride is engineered to handle the rigors of the road. It is built to move in a scissor-like motion that allows the pin box to compress vertically, absorbing road shock and vibration which provides cushion for a smoother ride. Its built-in shock protects the air bag from destruction by recoiling the pin box and handling the rebound or bounce effect, then positions the pin box to be ready for the next bump or impact. The CURT Air Ride 5th wheel pin box serves as a guard between the tow vehicle and RV, suspending the impact of road shock and stabilizing the towing performance.

Towing 21,000 lbs. never felt so good! The Air Ride is designed to replace Lippert 1621 and 1621HD long-jaw 5th wheel pin boxes and has a 21,000 lb. gross trailer weight (GTW). It comes ready to install and uses the same bolts as the original pin box, so it doesn’t require any additional hardware for installation. Constructed with high-strength steel and finished with a black powder coating, the Air Ride is the ultimate 5th wheel pin box to tackle your towing needs for the road ahead.

  • Replaces Lippert 1621 and 1621HD long-jaw 5th wheel pin boxes
  • Reduces chucking, bouncing and jarring with an internal air bag and built-in strut that absorbs road shock and vibration
  • Bolt-on installation with no assembly required
  • Steel construction and black powder coat finish that protect against rust
  • 21,000-lb. towing capacity
  • Made in the USA
100% Authentic OEM Parts

Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

Reviews, Q&A, and Install Guides

You may also like

Recently viewed