2014 Ultra4 National Championships – Team ARB Air Locker

West vs East Coast Ultra4 racers merged together for one weekend to battle it out during the 2014 Ultra4 Nationals at the Wild West Motorsports Park in Reno, NV. Check out the awesome footage of team ARB Air Locker as they push the limits and battle the nation’s best off-road racers.

Video by HeavyMetal Concepts – http://heavymetalconcepts.com

2014 King of the Hammers Announcement

With the 2014 King of the Hammers race week fast approaching, ARB USA is excited to announce an even greater level of support for the world’s most challenging off-road racing event.

First, we are pleased to announce that ARB will be supporting three of the top drivers in the race, all former Kings, and all three will be running ARB’s new RD99CE Ford 9″ Competition Edition Air Locker.


This year’s ARB USA sponsored drivers are:

  • Shannon Campbell, 2008 and 2011 King of the Hammers winner
  • Jason Scherer, 2009 King of the Hammers winner
  • Erik Miller, 2012 King of the Hammers winner

Not Shannon, Jason or Erik? No worries, we will be offering full technical support during the entire week to all racers running ARB products. Look for the ARB race trailer on Warn Way between PAC Springs and Advance Adapters near the “Big Tent”. Make sure you stop by for free decals featuring the new ARB Air Locker logo.

And now for the really exciting stuff… For the first time ever, ARB 4×4 Accessories will be offering a King of the Hammers contingency payout. The King of the Hammers winner will receive $3,000 and the Every Man Challenge modified & stock class winner will receive $500. If you have any questions regarding the 2014 King of the Hammers contingency, please email us at promotions@arbusa.com.

To qualify, you must be running at least one, ARB Air locker, and two ARB 4×4 Accessories logos (no smaller than 7″ in width) plus the new ARB Air Locker logo. We will a have a large supply of ARB and Air Locker decals on hand at our trailer.  While you are there, make sure to sign our special Air Locker banner.

Race winners responsible for contacting ARB at promotions@arbusa.com.

We look forward to another exciting race this year and hope you’ll stop by to visit us in Hammertown.


ARB USA Race Support

New Product: Competition Edition Ford 9″ Air Locker



Engineered and manufactured in Australia, the RD99CE competition Air Locker has been designed around the requirements of top-flight Ultra4 racing. Each technical advancement addresses a specific concern from teams competing in the world’s toughest 4×4 events and is a direct result of testing within these same races.


Among the many new design features is an integrated ring gear locking system engineered to prevent the backing out of Ford 9″ ‘Trac-Loc’ bolts. Fully reusable and able to resist the high torque loads applied to bolt removal, the locking tabs are designed for disassembly and reassembly for fast pit work on ring gear swaps compared to all other bolt locking systems.

Key to the design is the ability to oppose the adverse effects of axle shaft eccentricity caused by typical steering joints, thereby overcoming a common problem with front applications where the differential is offset too far toward one wheel.

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Engineered with improved internal lubrication, the RD99CE ARB Air Locker also caters for the use of load bolts (sometimes known as pegging).

Achieving new levels of load, wear and impact resistance, the RD99CE case is 290% stronger overall compared to standard lockers. Designed with deeper locking engagement, the RD99CE ensures locking functionality is retained even after sustaining significant clutch gear tooth damage from locking under throttle.

Available now, the RD99CE sets a new standard in lockers that will simply outperform the competition.


  • 290% increased case strength
  • Deeper clutch gear engagement
  • Built to handle misalignment in steeply offset axle housings
  • Improved internal oiling
  • Ring gear bolt locking mechanism
  • Designed to integrate with load-bolt equipped drop-outs
  • Pre-loaded internal gears
  • Forged gear set
  • Manufactured and assembled in Australia
  • 5 Year Warranty