SKU: STGD1553
UPC: 679460100164
MPN: D1553
The Ford 9in Pro Spool - L/W Steel 31-Spline is a high-performance differential spool designed for serious drag racing, circle track, and street performance applications where maximum traction and no-slip operation are essential. This spool replaces the factory open differential with a solid locking design, ensuring both rear wheels deliver equal power to the pavement.
Constructed from durable steel, the Pro Spool features a 31-spline design that provides robust engagement with your Ford 9-inch axle shafts while minimizing rotational mass. The rigid locking mechanism eliminates differential action entirely, allowing both wheels to rotate at identical speeds, which is ideal for straight-line acceleration but requires driver skill on road courses.
The Ford 9in Pro Spool is perfect for owners of classic Mustangs, Cougars, F-Series trucks, and custom hot rods looking to enhance their vehicle's performance. It is particularly beneficial for those building dedicated race cars or heavily modified street machines that demand consistent performance and predictable handling.
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