Pro L/W Steel Spool - Ford 9in 40-Spline

Drag racers and high-performance builders turn to the Pro L/W Steel Spool for Ford 9-inch axles when they need total lock-up under hard acceleration. This spool replaces clutch-type limited-slip units that can slip and wear out over time.

Made from steel, the spool ties both rear axle shafts together as one unit. Each wheel turns at the same speed, so tire spin under full power is eliminated. Open differentials and clutch-based units cannot match this level of immediate, full lock-up.

Dedicated drag cars and vehicles built for straight-line speed are the right home for this spool. The 40-spline fitment matches Ford 9-inch axle shafts, giving you the strength and durability needed to handle extreme horsepower levels.