Powertrax Lock-Right Automatic Locking Differential

The Powertrax Lock-Right is the original automatic locking differential — purpose-built for off-road enthusiasts, performance drivers, and anyone demanding maximum traction from their drivetrain. Available across a wide range of axle platforms, the Lock-Right installs directly into your existing differential carrier, replacing the spider and side gear assembly without disturbing ring-and-pinion settings or requiring precision calibration equipment.

Constructed from Powertrax's proprietary Zytanium® ultra-strength alloy, every Lock-Right locker is engineered to withstand the punishment of extreme off-road terrain, aggressive towing, and high-stress performance applications. Its fully mechanical, fully automatic design requires no switches, solenoids, air lines, cables, or electronics of any kind — delivering reliable, consistent traction on demand across every supported application.

While driving straight, both axles lock together for maximum traction output comparable to a solid spool. When cornering, the outside wheel is automatically permitted to overrun and rotate faster, completing the turn without binding. This seamless engagement and disengagement requires zero driver input under any condition.

By eliminating wheel spin-up and its associated driveline stress, the Lock-Right effectively reinforces the surrounding differential case. Carriers that are prone to failure with open or limited-slip differentials become significantly more robust when equipped with a Lock-Right. Note that a light ratcheting sound during cornering is normal in some applications — this is a characteristic behavior of automatic locking differential designs and is not a cause for concern.

Key Features:

• Fully automatic locking and unlocking — no driver input required under any condition
• Zytanium® ultra-strength alloy construction — engineered for extreme durability and high traction loads
• Installs into existing differential carrier — no ring-and-pinion setup changes or precision calibration equipment required
• Eliminates wheel spin-up — reduces driveline trauma and reinforces the surrounding carrier and drivetrain components
• No external hardware required — no switches, solenoids, air lines, or electronics
• Fast, straightforward installation — typically completed in under two hours with basic hand tools; no special tools or oils required
• Cost-effective alternative to expensive complete-case replacement locking differentials
• Proven worldwide — trusted by hard-core off-roaders, towing operators, and UN vehicles operating in rugged terrain
• Wide application coverage — available across a broad range of axle platforms

The Powertrax Lock-Right is best suited for vehicles used primarily in severe off-road and high-traction-demand conditions — including rock crawling, trail riding, mud, sand, drag racing, and demanding towing applications. For daily-driven vehicles or those requiring quieter, smoother traction control, Powertrax also offers the No-Slip Traction System line.