RZT-S54 Spindle Assembly for 54" Deck - 618-06978 / 918-06978 Fits MTD, Cub Cadet, Troy Bilt XT1-ST54 XT1-GT54 ZT1-54 ST54 ZT2-54 TB2454 T8400 G8400 Z6660 (3 Pack)

Three high-quality replacement spindle assemblies designed for 54" deck lawn tractors. This 3-pack supports easy swap-out and installation, restoring smooth blade rotation and consistent cutting performance. Compatible with a broad range of MTD, Cub Cadet and Troy Bilt machines, including XT1-ST54, XT1-GT54, ZT1-54, ST54, ZT2-54, TB2454, T8400, G8400 and Z6660 (also referenced by part numbers 618-06978 and 918-06978). Built for durability and long service life, these spindles help maintain optimal mowing results.