8TEN Spindle Assemblies for Ariens & Gravely 52-Inch Decks — 3-Pack with Pulley & Hardware

These are three 8TEN replacement spindle assemblies designed to fit Ariens and Gravely 52-inch decks (OEM 51528000 / 51537200), supplied with pulleys and mounting hardware for a direct swap.

When your mower's cutting performance slips or a spindle fails, a reliable replacement that matches OEM dimensions saves time and prevents deck damage. The 8TEN 3-pack spindles are built to align with Ariens Ikon-X, Edge 52 and several Gravely ZTX and ZT XL models that use a 52-inch deck. Each spindle ships with the pulley and mounting hardware needed for installation, so you can replace worn assemblies and get back to cutting without hunting for extra parts.

Will this spindle fit my Ariens or Gravely 52-inch deck?

Compatibility was engineered around the OEM part numbers and common deck models. These spindles match the dimensions and mounting patterns used on Ariens 51528000 and 51537200 spindles and the listed Gravely models with 52-inch decks.

• Fits Ariens Ikon-X 52 and Edge 52 with 52-inch decks
• Compatible with Gravely ZTX 52, ZT XL 52, and ZTX Stealth 52
• OEM-compatible mounting hole pattern (4 holes)
• Pulley sizes match original specifications for direct replacement

What are the key dimensions and included components?

The spindles are sized to match the original assemblies so belts and blades align properly. Each unit includes a pulley and mounting bolts; grease fittings are not included, and blade mounting hardware is not supplied with the spindle pack.

• Total height: 5.6 inches to match deck clearance
• Pulley outer diameter: 5.25 inches; inner diameter: 4.3 inches
• Four mounting holes on the flange for secure attachment
• Sold as a 3-pack; mounting hardware for spindles included

How does installing these spindles affect mower performance?

Replacing worn or damaged spindles restores blade stability and deck alignment, improving cut quality and reducing vibration. New pulleys ensure correct belt tracking, which helps extend belt and blade life when installed correctly.

• Reduces blade wobble and uneven cutting
• Restores proper belt tracking with correct pulley dimensions
• Helps lower vibration felt through deck and chassis
• Sold in a three-pack for multiple spindles or spare on-hand replacements

What should I know before installation?

Before you begin, confirm the OEM part numbers and measure pulley and mounting dimensions to ensure a precise match. Grease fittings are not included, so plan accordingly if your setup requires lubrication access; blade mounting bolts are also not supplied in this kit.

• Verify your mower’s OEM numbers: 51528000 / 51537200
• Check that blade mounting hardware and any grease fittings are available
• Torque mounting bolts to manufacturer specs for safe operation
• Consider replacing belts and blades while deck is serviced

Who is this for? The 8TEN 3-pack spindle assembly is geared toward homeowners and professional landscapers who maintain Ariens and Gravely zero-turn or lawn tractor models with 52-inch decks and need OEM-compatible replacements. It’s particularly useful when multiple spindles show wear, when you prefer keeping spare parts on hand, or when you want a pulley-equipped assembly for a more straightforward swap. If you need spindles that match Ariens OEM dimensions and come with the essential mounting hardware, this 3-pack offers a practical, time-saving solution.