Magorfas 50" Deck Spindle Rebuild Kit for Cub Cadet RZT/LT1050 — 3 Spindles, 3 Blades, Belt & Wheels

Complete 50" deck spindle rebuild kit that replaces worn spindles, blades, belt, idlers and wheels to restore cutting performance on Cub Cadet, Troy-Bilt and compatible zero-turn mowers.

When a 50-inch mower deck starts to vibrate, smoke, or cut unevenly, worn spindles, dull blades, a stretched belt, or damaged deck wheels are often to blame. This Magorfas kit bundles three direct-fit spindles, three blades, a 134" belt, three idlers and four deck wheels so you can do a full deck refresh in one project. All components are specified to match common OEM part numbers used on Cub Cadet RZT50, LT1050, Troy-Bilt Mustang 50 and many MTD chassis—saving time hunting parts and helping return mower performance to factory-like levels.

Will these spindles fit my 50-inch Cub Cadet RZT or LT1050 deck?

Yes — the kit includes three 918-04125C-style spindles sized for 50" decks. They are made to replace the listed Cub Cadet, MTD and Troy-Bilt part numbers and match the same mounting and bearing dimensions. Verify your machine’s parts manual for exact part cross-references before installation.

• Included spindles: 3 × 918-04125C (approx. 6.5" height)
• Replaces: 618/918 series OEM numbers and compatible Troy-Bilt/MTD listings
• Direct-fit mounting pattern for most RZT50 / ZT50 / LT1050 decks

How do the blades and belt restore cutting performance?

The kit supplies three 50" deck blades sized 17.8" × 2.375" and a 134" × 1/2" drive belt to replace fatigued cutting and power-transfer parts. New blades restore a clean, even cut and reduce turf tearing; a fresh belt eliminates slippage and keeps deck RPM steady under load.

• Blades: 3 × 742-04053 compatible 50" blades, sharpenable and balanced
• Belt: 1 × 754-04044 replacement to match OEM routing and tension
• Result: steadier deck speed, improved cut quality, reduced vibration

What do the idler pulleys and deck wheels do, and are they included?

This rebuild includes three idler parts and four deck wheels to address common wear points that affect deck height consistency and deck tracking. Replacing worn idlers prevents belt misalignment; new deck wheels protect the deck shell and keep the cutting height stable over rough ground.

• Idlers: 3 × compatible replacements for 753-08171 and related numbers
• Deck wheels: 4 × 5" (125 mm) diameter wheels to replace OEM wheel parts
• Benefit: smoother belt travel, consistent deck clearance, less chassis wear

How difficult is the install and what should I prepare?

Installing the kit typically requires intermediate mechanical skills, basic hand tools, and about 2–4 hours depending on experience and whether you’re replacing spindles on all three positions. Have jack stands or ramps, torque wrench, socket set, and blade holder ready; follow safety procedures and consult the tractor’s service manual for torque specs.

• Tools: jack stands, sockets, torque wrench, blade holder, pry bar
• Time: expect 2–4 hours for a full deck refresh by a competent DIYer
• Tip: mark belt routing and take photos before disassembly for easier reassembly

Who this rebuild kit is for: Owners and technicians who need an all-in-one parts package to restore a 50" zero-turn or lawn tractor deck—especially those with Cub Cadet RZT50, LT1050, Troy-Bilt Mustang 50, or compatible MTD models. If your mower shows uneven cutting, excess vibration, belt slip, or damaged deck wheels, this Magorfas kit supplies the commonly replaced OEM-equivalent components to bring the deck back into reliable service.