ROCK ASSAULT 9™ Rear Axle Housing w/ Bearing Pockets

$1,093.20 $983.88



The Rock Assault™ 9 is now available as a complete welded assembly from flange to flange including the Unit Bearing Pockets The new Rock Assault™ 9 is available in 3 great sizes to fit all applications. Designed for Wheel Mount Surfaces (WMS) of 60”, 65”, and 68”. We have made it easier for your axle upgrade or custom build. The assembly will also include the inner housing seals. Housing accepts standard and high pinion differentials.

Also available in 3.5″ O.D. axle tubing




NOTE: WMS (Wheel Mount Surface Dimensions) reached using TG Unit Hub, TG# 144012-K, and 1/4″Brake Hats. Using other components  will vary final results.  Pinion is offset 2.125 to allow for same size  axle shafts for passenger, and driver side.

Note: The differential bolt pattern on 9″ Axle Housings are NOT universal. Please check before cutting or welding

Note: For an additional $90, we will install the inspection hole kit (140188-1-KIT) in the location shown below.


  • 1/4″ formed shell for the center section made out of A572 Grade 50 Steel
  • Minimum yield strength of 50,000 psi on the center section
  • 1/2″ face plate
  • Axle tubes are secured by the industry’s first 3-Point Attachment System™, giving the tubes superior support and engagement into the center section
  • Fits both a 9″ and 10″ differential
  • Designed for Wheel Mount Surfaces (WMS) of 60”, 65” and 68”

Additional information

Weight 118.00 lbs
Dimensions 80 × 10.5 × 5.5 in

Vehicle Type