The USA Standard Mini Spool for Ford 9" with 28-spline axles is a budget-friendly traction upgrade that installs into a standard open carrier, replacing spider gears to provide full-time lockup. Intended for off-road or racing applications rather than street use, the mini spool offers 100% traction to both wheels and fits Ford 9" housings equipped with 28-spline axles.
USA Standard Mini Spool For Ford 9in w/ 28 Spline Axles