4x4Labs heavy duty spindle assemblies are designed to be smooth and rattle free forever. Tapered roller bearings are fully sealed but serviceable. Replacement parts are available.

  • Heavy Duty Spindle 3500 lb. rating
  • 3/8″ wall outer shell with built in milled stopper
  • Heavy duty top and bottom bearing
  • Double lip agricultural bearing seal
  • Heavy duty spindle hardware and domed cap

Spindle assembly – $95 each

Replacement Bearing kits – $25

Contact us for replacement parts


Outer Shell-3″x.375″ wall tubing 4.25″ high with stopper tooth

Spindle- 9.5″ total length, 4.5″ stub stick out, 1.75″ dia. shaft

Check out the cutaway pics for an inside view of the spindle assembly.