Ford 9in Pro Spool - L/W Steel 31-Spline

Built for drag racing, circle track, and street performance builds that need full traction with zero wheel slip, this Strange Engineering differential spool replaces your factory open diff. Its solid locking design sends equal power to both rear wheels for maximum grip.

Made from tough steel with a 31-spline pattern, the Pro Spool locks into Ford 9-inch axle shafts while keeping rotating weight low. By removing all differential action, both tires spin at the same speed - great for straight-line launches, though it takes more skill to handle on a road course.

Owners of classic Mustangs, Cougars, F-Series trucks, and custom hot rods will find this spool ideal for boosting their ride. It works especially well in dedicated race cars and heavily modified street machines that need steady power and predictable behavior.