8TEN Blade Spindle Belt Kit for 50-inch Mustang/Cub Cadet Deck — Spindles, Blades & Deck Belt

8TEN Blade Spindle Belt Kit is a complete replacement set designed to restore cutting performance on 50" Mustang/Cub Cadet decks by supplying compatible spindles, blades, and deck belts that match OEM specifications.

This kit bundles the parts you need to service the 50-inch mowing deck on several Cub Cadet, MTD and Troy-Bilt riding mowers so you can get back to even, efficient cutting without hunting down multiple part numbers. All components are manufactured to fit the same mounting patterns and belt routing as the original equipment, simplifying installation and reducing downtime.

Will this kit fit my mower model?

The 8TEN kit covers a range of specific 50" deck models from Cub Cadet, MTD, and Troy-Bilt produced in 2013–2014. Confirm compatibility by cross-referencing your deck model and OEM part numbers; the kit is built to match those factory references.

• Compatible with Cub Cadet RZT-S50KH 2014 and RZT-L50 (2013–2014)
• Fits MTD Columbia RZT-L50 models from 2013–2014
• Works on Troy-Bilt Mustang 50 XP 2013–2014
• Includes parts cross-referenced to multiple OEM numbers for reliable match

What parts are included and how do they compare to OEM?

The kit contains spindle assemblies, mower blades, and the deck belt sized for 50" decks. Each component is specified to replace several OEM part numbers, giving you direct interchangeability with factory items without modifying the deck.

• Spindle compatible with OEM numbers such as 618-04126 and 918-04126A
• Blades listed to replace OEMs like 490-110-M126 and 742-04053 series
• Deck belt matches MTD/Cub Cadet part numbers 754-05008 and 954-05008
• Hardware mounting and belt routing mirror original equipment design

How will this kit affect cutting performance and maintenance?

Replacing worn spindles, blades, and belts restores blade speed, deck stability, and belt engagement so the deck cuts more evenly and with fewer missed passes. Fresh components reduce vibration and premature wear, extending the life of the deck and saving time on future repairs.

• Sharper, correctly pitched blades improve grass discharge and striping
• New spindles reduce wobble and noise from worn bearings
• Correct belt length and profile ensure proper tension and engagement
• Completing the set at once avoids repeated tear-downs for single-part swaps

How difficult is installation and what should I prepare?

Installation requires basic mechanical skills and common tools: jack or stands, wrench set, and torque wrench recommended. Each part installs to existing mounting points, but you should follow the mower manufacturer’s torque specs and safety procedures for deck removal and blade handling.

• Deck removal or flipping may be needed for spindle access
• Use proper blade-holding tools and safety gloves when changing blades
• Check belt routing diagrams and torque spindle hardware to spec
• Inspect pulleys and deck shell for wear while installing the kit

Who is this for: The 8TEN Blade Spindle Belt Kit is aimed at owners and professional technicians maintaining 50" Mustang, Cub Cadet, MTD, and Troy-Bilt riding mower decks from the 2013–2014 model years who want a convenient, OEM-referenced replacement solution. Choose this kit if you prefer swapping the full set of wear parts at once to restore deck performance, minimize follow-up repairs, and keep your mower cutting like new.