8TEN Spindle Assembly for Exmark Toro TimeCutter 5000 5060 4235 4260 121-0751 117-7267 139-3214 2 Pack

What It Is

This is a replacement spindle assembly for zero-turn mower decks, specifically designed for the Exmark and Toro TimeCutter 5000, 5060, 4235, and 4260 models. It houses the blade shaft and bearings that spin the cutting blades, and comes as a 2-pack for simultaneous replacement on multiple spindles.

Fitment & Compatibility

Before buying, confirm your mower deck size and model. This spindle fits decks with a 42-inch or 50-inch cutting width on Exmark and Toro TimeCutter models. Direct OEM replacements include part numbers 121-0751, 117-7267, and 139-3214. Measure the spindle housing diameter (typically 1-inch shaft) and bolt pattern (usually 3 bolts on a 3-inch center). Verify your deck’s pulley hub height matches—this spindle uses a standard 4-inch pulley. Check that your blade bolt size is 5/8-inch (common for these decks). If your mower has a different deck size (e.g., 48-inch or 54-inch), this won’t fit.

Key Things to Know

• Quality vs OEM: Aftermarket spindle, but uses sealed bearings and a hardened shaft. Expect similar lifespan to OEM at a lower price point.
• Installation difficulty: Moderate. You’ll need a socket set, torque wrench (tighten bolts to 30-40 ft-lbs), and possibly a puller for stubborn spindles. No special tools required.
• Common gotcha: The spindle may come without the pulley or blade—reuse your existing ones. Ensure the pulley keyway aligns, or you’ll need to file it slightly.
• Bearing noise: If you hear grinding after install, check that the spindle housing isn’t bent or the deck mount is straight—common on older decks.

Should You Buy It

If you have an Exmark or Toro TimeCutter with a 42- or 50-inch deck and need to replace multiple spindles, this 2-pack offers good value. It’s a solid choice for DIY maintenance, provided you verify fitment and have basic mechanical skills. Skip if you prefer OEM parts or need a single spindle.