The UT Cal Block Bumper System is designed to hold a calibration block and position it into a wide range of motion. Very ridged and stable with easy install into a regular receiver, no modifications required.


  • Two disk brakes for range of motion to easily adjust position and lock into place
  • Two 4,000 LBS hubs to take the rigors of right away
  • Cal block quick change adjustment for line spec changes
  • Attached water catch tray
  • Two steps up to access truck cab
  • Two under mount outriggers for stabilization
  • Safety chain to attach to cal block during transport
  • Home locking system