Youxmoto 618-06978 Spindle Rebuild Kit for 54" Deck MTD Cub Cadet RZT L54 RZT-S54 ZT1-54 ZT2-54 XT2-54 Z6600, 3 Spindles 918-06978, 3 Blade 942-05056, 148'' Belt 954-04329

What It Is

This is a complete spindle rebuild kit for 54-inch MTD/Cub Cadet zero-turn mowers. It includes three spindle assemblies (replaces OEM 918-06978), three blades (942-05056), and a 148-inch drive belt (954-04329) to restore cutting performance on decks like those found on RZT, ZT1, ZT2, XT2, and Z6600 models.

Fitment & Compatibility

Before buying, confirm your mower has a 54-inch deck and matches one of these series: Cub Cadet RZT L54, RZT-S54, ZT1-54, ZT2-54, XT2-54, or Z6600. The spindles replace OEM part 918-06978 directly. The blades (942-05056) are 17.75 inches long with a 1-inch center hole and 0.25-inch offset—measure your current blades and center hole to verify fit. The 148-inch belt (954-04329) must match your deck’s pulley layout; check your owner’s manual or old belt for exact length. This kit is not compatible with 46-inch, 50-inch, or 60-inch decks.

Key Things to Know

• Quality: Aftermarket spindles may use lighter-duty bearings than OEM. Expect 1–3 seasons of residential use, less if mowing rough terrain or wet grass regularly.
• Installation: Moderate difficulty—requires removing the deck, unbolting old spindles, and transferring pulleys and hardware. Have a socket set, torque wrench, and penetrating oil for rusted bolts.
• Common gotcha: The included blades are standard OEM replacements; if you prefer mulching or high-lift blades, you’ll need to buy those separately (same 942-05056 pattern).
• Belt fitment: The 148-inch belt is correct for most 54-inch Cub decks, but verify your deck’s belt routing diagram—some models use a different length if equipped with a tensioner or idler pulley change.

Should You Buy It

This kit is a good value if you’re rebuilding all three spindles at once on a residential-use Cub Cadet ZT with a 54-inch deck and want a single purchase for spindles, blades, and belt. It’s not for heavy commercial use or for decks smaller than 54 inches—buy OEM spindles if you need longer bearing life.