ARB RD99 Air Locker Locking Differential - Kit

The ARB RD99 Air Locker is a selectable locking differential that provides maximum traction control for serious off-road enthusiasts. Engineered and manufactured in Australia, this air-operated differential locker allows you to seamlessly switch between open and locked modes, giving you on-demand traction when you need it most.

How It Works:

When unlocked, the differential operates like a standard open diff for normal street driving. When engaged via the in-cab switch, compressed air activates the locking mechanism, forcing both wheels to turn at the same speed regardless of traction conditions. This eliminates wheel spin and keeps you moving through mud, sand, rock, and snow.

Complete Kit Includes:

• Air Locker differential housing with internal locking mechanism
• In-cab activation switch with LED indicator
• Heavy-duty solenoid valve for reliable air control
• Air line and bulkhead fittings for installation
• All necessary hardware and components

Key Features:

• On-demand activation—engage only when needed
• Proven reliability in extreme conditions worldwide
• Maintains normal street driving characteristics when unlocked
• Professional-grade construction with forged steel components
• Compatible with existing air compressor systems

ARB Air Lockers are the world's most trusted differential locking system, with decades of proven performance in motorsports, expedition travel, and professional off-road applications. The RD99 delivers the traction advantage you need to conquer challenging terrain with confidence.