618-06978 / 918-06978 Spindle Assembly for 54" Deck — Fits Cub Cadet, MTD & Troy-Bilt RZT-S54 TB2454 T8400 G8400 Z6660 (2-Pack)

Two durable spindle assemblies (618-06978 and 918-06978) engineered for 54" mower decks. Constructed from high-quality materials to resist wear and prolong service life, these spindles help keep cutting performance consistent. Compatibility covers a range of walk-behind and zero-turn mowers, including Cub Cadet, MTD, Troy-Bilt and specific models RZT-S54, TB2454, T8400, G8400, Z6660. Supplied as a 2-pack for convenient replacement and better value, the set allows you to refresh multiple spindles at once. Installation is straightforward and designed for quick swap-outs without the need for specialty tools. Once installed, they promote smooth, efficient operation and help maintain optimal cutting results over time.