Cub Cadet 54" Zero-Turn Spindle Assembly — Fits RZT54, XT1, XT2, ST54, GX54, ZT1, ZT2 | Replaces OEM 918-06978

Designed for 54" Cub Cadet zero-turn mowers, this spindle assembly is compatible with RZT54, XT1, XT2, ST54, GX54 and ZT1/ZT2 series models. It is a direct OEM replacement matching part number 918-06978. Built for long life, the unit features a forged steel spindle and precision bearings for enhanced strength and smooth operation. The package is a complete assembly — spindle, housing, bearings and pulley — supplied ready for installation. A powder-coated finish plus sealed bearings provide corrosion and moisture resistance to help protect the assembly in outdoor conditions.