Youxmoto 54-inch Deck Rebuild Kit for MTD/Cub Cadet/Craftsman RZT 54 — 3 Spindles, 3 Blades & 148" Belt

This Youxmoto 54-inch deck rebuild kit replaces worn spindles, blades, and belt to restore cutting performance for compatible MTD, Cub Cadet, and Craftsman RZT 54" zero-turn mower decks.

If your RZT-L54 or RZT-S54 mower is showing vibration, poor cut quality, or slipping deck belt issues, this comprehensive rebuild kit supplies the most commonly worn components so you can return the deck to reliable operation in one service. The set includes three spindle assemblies sized to match OEM dimensions, three mulching blades built to original lengths, and a full-length deck belt — everything needed for a thorough midlife refresh of a 54" cutting system.

Will this kit fit my mower model?

Compatibility covers a range of MTD-built 54" RZT decks and related Craftsman/Cub Cadet model codes from 2014–2016. Confirm your deck model numbers against the listed references and part cross-references before ordering to ensure a proper match.

• Fits RZT-L54KH, RZT-L54KW, RZT-S54, RZT-S54KH, RZT-S54KW model variants (2014–2016)
• Compatible with Craftsman/Cub Cadet Z6600, Columbia ZT-L54KH, ZT-S54KH and ZT1-54 KH FAB in many cases
• Check owner manual or existing part numbers to match spindle (618-06978 / 918-06978) and belt (954-04329)

What exactly is included and what are the part sizes?

The kit groups the specific spindle assemblies, blades, and a deck belt sized to OEM specifications so replacements drop into place with minimal modification. Sizes are provided so you can verify fit with your current hardware.

• Three spindle assemblies — height ~7" (176 mm) and pulley OD 5-3/16" to match OEM spindles
• Three mulching blades — length 18 11/16" and width 2 3/8" (OEM blade replacements)
• One deck belt — 5/8" × 148-1/4" length to replace worn or stretched belts

How does installing this kit improve deck performance?

Replacing the spindles removes worn bearings and misalignment that cause vibration and feathered cuts; fresh blades restore cutting geometry and mulching efficiency; a new belt prevents slippage and keeps deck RPMs steady for an even finish.

• Reduces vibration and wobble caused by failing spindle bearings
• Restores blade edge and lift for cleaner, more even grass clipping
• Prevents belt slip and maintains optimal deck speed under load

What should I check before installation?

Verify your deck model and existing part numbers, inspect pulleys and mounting hardware for damage, and prepare basic tools. Replacing all three spindles and blades at once often saves labor compared with piecemeal repairs.

• Confirm part numbers on your current spindles, blades, and belt before purchase
• Inspect deck shell, mounting studs, and pulleys for cracks or excessive wear
• Have torque wrench, socket set, and blade-holding tool available for safe installation

Who is this kit for: This Youxmoto 54" deck rebuild kit suits owners, small landscape contractors, and repair shops maintaining MTD-built 54-inch zero-turn mowers who want an OEM-dimension replacement package. It’s ideal when spindles show looseness or noise, blades are shortened/damaged, and the deck belt has stretched, offering a single-purchase solution that reduces downtime and restores cutting quality.