A direct-replacement brake drum hub assembly engineered for 6,000-lb trailer and RV axles. Solid iron construction, a complete bearing kit in the box, and a 6 on 5.5" bolt pattern that covers a wide range of travel trailers, fifth wheels, and utility trailers. Everything you need to restore reliable electric brake function is included -- no separate bearing sourcing required.
Brake drum hubs take a beating: heat cycles from braking, road grit, water crossings, and the constant stress of heavy towing loads. Lippert's 814211 is cast from solid iron -- the same material used in OEM trailer axle assemblies -- so it manages heat dissipation and resists cracking far better than lighter alloy alternatives. At 12 inches in diameter, this drum is matched specifically to electric brake systems on 6,000-lb-rated axles, giving your brake shoes the full swept area they need to stop a loaded rig safely.
The 6 on 5.5" (6 x 139.7 mm) bolt pattern is one of the most common heavy trailer configurations, found on a broad range of Forest River, Keystone, Jayco, Coachmen, and comparable brands that use Lippert or Dexter 6K axles. If you're matching the OEM bolt pattern on your trailer's existing wheels, this hub drops right in.
Full cast-iron construction handles repeated heat cycles and heavy braking loads without warping or surface cracking over time.
Inner and outer bearing cones and cups, a double-lip grease seal, and a cotter pin are all included -- no trip to the parts store needed.
Accepts wheels from 14.5" to 16.5" in diameter, covering the most common wheel sizes used on travel trailers and fifth wheels in this weight class.
Standard 1/2" studs match the lug nuts and torque specs already in use on most 6,000-lb trailer axle setups.
Lippert ships the 814211 as a complete hub-and-bearing assembly. The bearing kit components eliminate the guesswork of sourcing matched cone-and-cup pairs separately. Included items:
This hub is a conventional tapered-roller bearing drum assembly. Standard installation procedure applies:
Drum replacement is warranted when you observe any of the following during inspection:
This drum hub is designed for use with electric trailer brake systems. It is NOT compatible with hydraulic surge brake setups that use a different drum profile. Confirm your trailer uses an electric brake controller and electric brake magnets before ordering. The 12" drum size requires a 12" electric brake shoe-and-magnet assembly -- do not attempt to pair this drum with 10" or 10x2.25" brake assemblies.