SKU: ALL 68066
UPC: 848238035988
MPN: ALL68066
The Spool 9in Ford 31 Spline Ultralite from ALLSTAR PERFORMANCE is a full-lock differential component designed specifically for high-performance Ford 9-inch rear axles. This spool replaces the traditional differential carrier assembly, locking both wheel hubs together to ensure equal power distribution during acceleration and cornering, making it ideal for drag racing and dedicated track applications.
Constructed from lightweight alloy, the ultralite design reduces rotational inertia, enhancing suspension response compared to heavier steel alternatives. By forcing both rear wheels to rotate at identical speeds, the spool eliminates wheel hop and traction loss, providing a significant advantage during hard launches and tight turns under load.
This spool is particularly beneficial for vehicles equipped with nitrous, turbochargers, or superchargers, where consistent traction is crucial for optimizing ET and trap speed. With a weight of just 6.73 pounds, it delivers race-proven strength without the added weight penalty, making it the preferred choice for serious drag-focused builds.
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