The Spartan Locker from USA Standard Gear is the perfect blend of affordability and performance. Designed for off-road usage, this lunchbox locker is easy to install and provides a significant increase in strength over stock...

Buy Now From Amazon

Product Review

The Spartan Locker from USA Standard Gear is the perfect blend of affordability and performance. Designed for off-road usage, this lunchbox locker is easy to install and provides a significant increase in strength over stock differentials. Drop a Spartan in your Jeep or 4x4 today, and take to the trail with confidence! This model includes heavy-duty cross pin shaft.

  • Fits GM 18.5" with 30 spline axles
  • Made from 9310 steel for added strength
  • Replaces the spiders in a standard carrier case
  • Mechanical locker delivers reliable 100% lockup