This Revolution Gear & Axle full spool is specified for GM 14-bolt differentials, 10.5" housing with 30 splines and is built around a 4.10 ratio & down full spool configuration. It replaces conventional differential components to provide a locked axle behavior suited to heavy-duty traction needs where a full spool is desired, using the listed GM 14-bolt platform specifications for fitment.
Revolution Gear & Axle GM 14-Bolt 10.5in 30 Spline 4.10 Ratio & Down Full Spool