We were in the process of building a 40-spline, full-floating Dana 60 for our King of the Hammers Jeep when we found out that ARB had a new 40-spline Dana 60 ARB Air Locker. We had to have one if we wanted our Jeep to be driveable on the street after surviving the King of the Hammers. The ARB Air Locker would allow us to unlock the differential to make tight turns on narrow trails, which would be a headache if we ran a full spool. The new 40-spline Air Locker is built with a steel-reinforced, elastomer bonded annular seal that’s designed to handle the most extreme temperatures on earth. We can honestly tell you that the new ARB 40-spline Dana 60 Air Locker did not let us down and performed flawlessly throughout the grueling race at the Hammers. (See our July 2011 issue for complete race details.) OR The new 40-spline Dana 60 air locker features a “timed” locking mechanism that offers high strength and ultra fast un-locking–making tight turns on narrow trails a possibility.The new 40-spline Dana 60 air locker features a “timed” locking mechanism that offers high The patented two-piece design offers a range of interchangeable side gears to integrate with non-standard axle-shaft splines while giving the rigidity of a one-piece OEM case with twice the number of pinion gears to handle the added torque loads.The patented two-piece design offers a range of interchangeable side gears to integrate wi The 40-spline ARB Dana 60 Air Locker operates on compressed air, so only the air compressor has any parasitic drain on your electrical system. The nice part about having a selectable air locker is that it puts significantly less wear and tear on your drivetrain and tires when it is not engaged — really making a difference when you’re running King of the Hammers!The 40-spline ARB Dana 60 Air Locker operates on compressed air, so only the air compresso Specs Differential Type: Locking differential with open and locked positions Locking Actuation: Air locking Application: Dana 60 Axle Spline Count: 40 Carrier Split: 4.56 and up Ring Gear Size: 9.75 inches Estimated Cost: $1,000 Sources ARB USA 720 SW 34th Street Renton WA 98057 866-293-9078 www.arbusa.com By Agustin Jimenez Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!