ProRock 80

ProRock 80The Dynatrac ProRock 80® is engineered to perform in the most abusive environments. This beam axle solution provides optimum strength and minimum size for vehicles up to 11,000 lbs. (4,990 Kg) GAWR.

The patented Dynatrac ProRock® design provides unbeatable ground clearance and reduces the frontal impact area by 30-percent. The smooth bottom of the ProRock 80 is engineered to take direct impacts from rocks. The internals are just as robust as the housing, featuring an 11.25-inch (386 mm) ring gear and 40-spine (2 in./51 mm) axleshafts. The Dynatrac ProRock 80 accepts a number of differentials including limited-slip and selectable lockers.

The Dynatrac ProRock 80 is available as rear beam axle for multiple applications, including purpose-built vehicles.

All Dynatrac drivetrain systems are engineered to protect against field failures. These axles are cost-effective to deploy and they accept COTS service parts to make service around the world easy and cost-effective.


  • Highest strength-to-weight ratio in its class
  • 40-spline chromoly axleshafts
  • 11.25-inch (386 mm) ring gear
  • Structurally-integrated nodular-iron differential cover engineered to take impact
  • Aluminum differential cover is available for reduced-weight vehicle programs
  • Low-pinion design
  • Suitable for vehicles up to 11,000 lb. (4,990 Kg) GAWR
  • Made in the USA

Click here to download the datasheet on the Dynatrac Defense ProRock 80.