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Air Ride™ Pin Box

Our Flex-Air Air Ride Pin Box can be retrofitted to most pin boxes on the market and significantly dampens road shock, protecting the RV.

Uncomprimised Ride and Comfort

Fourteen years ago, Trailair introduced air ride technology that would revolutionize the RV industry. Since then, many pin boxes have come and gone, but the Air Ride still stands tall as the leader in air ride technology. The Trailair Air Ride Pin Box acts as a buffer between the tow vehicle and RV, arresting the impact of road shock and stabilizing the towing performance. How? Simple — the unique scissor action allows the air bag to absorb road shock and vibration while the gas shock handles the rebound or bounce effect, giving RVers a better, smoother ride.

Quick Facts

  • Gas shock and air bag combination to absorb road shock and control fore to aft coach movement, otherwise known as chucking
  • Protects from damage caused by road shock and vibrations potentially saving owners costly repairs
  • Improved ride
  • Replaces all popular LCI pin boxes;16K (1621), 18K (1621), 21K long jaw (1621), 21K (1716), 18K (0719) and 21K (1116)

Uncomprimised Ride and Comfort

Fourteen years ago, Trailair introduced air ride technology that would revolutionize the RV industry. Since then, many pin boxes have come and gone, but the Air Ride still stands tall as the leader in air ride technology. The Trailair Air Ride Pin Box acts as a buffer between the tow vehicle and RV, arresting the impact of road shock and stabilizing the towing performance. How? Simple — the unique scissor action allows the air bag to absorb road shock and vibration while the gas shock handles the rebound or bounce effect, giving RVers a better, smoother ride.

Quick Facts

  • Gas shock and air bag combination to absorb road shock and control fore to aft coach movement, otherwise known as chucking
  • Protects from damage caused by road shock and vibrations potentially saving owners costly repairs
  • Improved ride
  • Replaces all popular LCI pin boxes;16K (1621), 18K (1621), 21K long jaw (1621), 21K (1716), 18K (0719) and 21K (1116)