AeroFin XL Tail Device

Rolf Lockwood

Wabash National has expanded its trailer aerodynamics product line with its fifth device designed to  improve trailer aerodynamics and fuel economy — the AeroFin XL tail device.

The AeroFin XL is said to be a lightweight and “extremely durable” aerodynamic tail device that directs airflow across the rear of the trailer to reduce aerodynamic drag. The device deploys and retracts automatically with swing-door operation, requiring no additional interaction from the driver. It does not interfere with trailer loading and unloading. It features a more compact design and a lighter weight when compared to conventional designs, the company claims.

When used in conjunction with Wabash National’s Ventix DRS (drag reduction system), the AeroFin XL is said to provide over 10% improvement in fuel economy (certified by an independent third party in accordance with the SAE J1252 wind-tunnel test). Together, the devices are verified as an EPA SmartWay Elite aerodynamic device combination, a new category for the SmartWay  program that recognizes devices providing the highest levels of fuel savings. 

When used as a stand-alone device, the AeroFin XL provides over 4% improvement in fuel economy, says Wabash.

Rolf Lockwood

Rolf Lockwood is editor emeritus of Today's Trucking and a regular contributor to

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