USA Standard Gear ZP MINSF9-31 Mini Spool for Ford 9" w/31 Spline

USA standard mini spool for Ford 9" with 31 spline axles USA Standard Gear Mini Spools are a low-cost traction option for vehicles looking for full-time lockup. The mini spool installs into a standard open carrier in place of the spider gears and delivers 100% power to both tires at all times. These units are not recommended for street-driven vehicles. Full spools are recommended for vehicles with large tires or high horsepower. Fits Ford 9" with 31 spline axles Installs into a standard open carrier case Provides 100% traction to both wheels at all times Not recommended for street driven vehicles