SKU: MEI5S9F35
MPN: 5S9F35
The MOSER ENGINEERING Ford 9in. Steel Full Spool 35 Spline (Part No. 5S9F35) is a chromoly full spool designed for Ford 9-inch rear axles requiring maximum traction in high-performance and heavy-duty applications. This component locks both wheels to the ring gear, delivering 100% power distribution—ideal for drag racing, mud bogging, rock crawling, and other scenarios where wheel slip cannot be tolerated and straight-line traction is the priority.
Constructed from durable chromoly steel and rated for 35-spline Ford 9-inch housings, this full spool is engineered to handle extreme loads typical of modified vehicles. The full-spool design eliminates the differential action found in standard carrier assemblies, meaning both rear wheels rotate as one unit. This is fundamentally different from limited-slip or open differentials—there is no speed differentiation between sides.
This spool is engineered for builders and owners running modified Ford 9-inch axles in purpose-built vehicles where understeer and controlled handling characteristics are acceptable trade-offs for maximum launch traction. Common applications include dedicated drag racing platforms, off-road race vehicles, and heavy-load hauling setups where differential lock-up is desired.
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