117-7268 117-7439 Spindle Assembly, 42" 50" Deck for Exmark Toro TimeCutter SS4200 SS4235 SS4260 SS5000 SS5060 MX5000 MX5050 Mowers 3 Pack, Replace 121-0751 117-0751

What It Is

This is a 3-pack of spindle assemblies for Exmark and Toro zero-turn mowers with 42-inch or 50-inch decks. The spindle is the rotating hub that drives the blade; replacing a worn or noisy spindle restores cutting performance and prevents blade wobble or deck damage.

Fitment & Compatibility

Before buying, confirm your mower deck size (42" or 50") and model. This 3-pack directly replaces OEM part numbers 117-7268, 117-7439, 121-0751, and 117-0751. It fits Toro TimeCutter models SS4200, SS4235, SS4260, SS5000, SS5060, and Exmark MX5000, MX5050. Also fits Toro Z4200, Z5000, Z5020, and Z5030. Measure the spindle bolt pattern (typically 3-bolt, 3-inch center-to-center) and shaft diameter (usually 5/8") to verify. Not for 54" or 60" decks.

Key Things to Know

• Quality vs OEM: Aftermarket spindles at this price point often use sealed bearings similar to OEM, but check reviews for premature wear reports—this set has a solid 4.6-star rating.
• Installation difficulty: Moderate. You’ll need a socket set, torque wrench (specs: 30-40 ft-lbs for spindle bolts), and a jack to lift the deck. Mark blade orientation before removal.
• Common gotcha: The pulley may not match your original if the deck uses a different pulley height or belt size. Reuse your old pulley if needed—these spindles typically accept standard pulleys.
• Pack contents: Includes 3 complete assemblies (shaft, bearings, housing, and mounting bolts). No blades or pullets.

Should You Buy It

If your Toro or Exmark 42"/50" deck has a noisy, wobbly, or seized spindle, this 3-pack is a cost-effective fix. It’s a good value for DIYers who want to replace all three at once and avoid downtime, but verify bolt pattern and shaft size first. Not for commercial use or decks outside the listed models.