The FlowBelow Tractor AeroKit™ is a tractor mounted aerodynamics system that offers proven fuel savings of 2.23% for van, reefer, tanker and flatbed fleet operations. 

The Tractor AeroKit™ system consists of easy to operate aerodynamic wheel covers and tractor tandem fairings that work together as a complete aerodynamic system to reduce drag and turbulence around the rear wheels of the tractor. Because the Tractor AeroKit™ is a tractor-mounted aerodynamic device, you save fuel on every mile you drive, regardless of your fleet's tractor to trailer ratio.



The most fuel-efficient fleets combine the Tractor AeroKit™ with trailer aerodynamic devices to minimize drag across the entire tractor-trailer system.


Invest in aerodynamics products that offer proven fuel savings

The Tractor AeroKit™ fuel savings are based on SAE J1321 third party testing using EPA SmartWay guidelines and over 300 fleet on-road tests.


enjoy all weather durability even in the toughest conditions

Cutting edge engineering, precise manufacturing and durable materials ensure high performance whatever nature throws at you.

We’ve installed the FlowBelow Tractor AeroKit system on all of our new Freightliner Cascadia Evolution trucks. Immediately after the kits were installed, we realized better fuel efficiency and the durability of the system easily met our expectations.”
— Daniel Scherer (Fleet Maintenance Manager, Meijer Logistics, LLC.)

Did you know about factory installation?

The FlowBelow Tractor AeroKit™ is now available factory installed from KenworthFreightliner and Peterbilt. That's right! Your new truck can be delivered ready to save you 2.23% in fuel savings. Have trucks on order? Contact your dealer and ask about adding the Tractor AeroKit™ to your new truck order with the following data codes:

Freightliner Data Codes
Tractor AeroKit (Factory) 78H-002
Tractor AeroKit (PDI) 78H-003
Wheel Covers (Factory) 50U-007

Kenworth Data Codes
Tractor AeroKit (Black) 6792012
Tractor AeroKit (White) 6792014
Wheel Covers (Black) Tandem 22.5" 5850080
Wheel Covers (Chrome) Tandem 22.5" 5850080

Peterbilt Data Codes
Available Q2 2017