Automatically balance while you drive! Using centrifugal force, the free moving weights sealed in the balancer automatically distribute exactly where needed, placing the assembly in perfect balance. Made in the USA.  Sold as a pair.

This special application balancer is made to fit steer axles with big brake drums;  16.5" drum or 15" drum with casting sprues, trucks with disc brakes, and trucks with drive trailer super single tires.

Fitment Specifications
Vehicle Type: Heavy Duty Truck, Bus/Motorhome
Axle: Steer, Drive
Wheel Size: 22.5 - 24.5 in.
Bolt Holes: 10
Bolt Circle: 11.25 in.
Year: 2011 and older 16.5 Drum or Disk Brakes,  Super Single Drives
Note: 8.25 in. wide rim, aluminum rims only, does not fit 22.5" steel wheels