(2 Pack) Spindle Assembly Replaces Toro 117-7268 117-7439 121-0751 117-0751 117-7267 - Spindle with 125-5575 Pulley - for Timecutter SS4200 SS4225 SS4260 MX4200 42 Inch MX5000 MX5050 50 Inch Mower

What It Is

This is a replacement spindle assembly (with a 125-5575 pulley pre-installed) for 42-inch and 50-inch Toro TimeCutter and MX series zero-turn mowers. It drives the mower blade and is sold as a 2-pack, covering both the left and right spindles on a two-blade deck.

Fitment & Compatibility

Check these before buying:

• Deck size: Fits 42-inch decks (TimeCutter SS4200, SS4225, SS4260; MX4200) and 50-inch decks (MX5000, MX5050).
• Model series: TimeCutter SS and MX models only – does not fit TimeCutter ZS or other Toro series.
• OEM part numbers: Replaces Toro 117-7268, 117-7439, 121-0751, 117-0751, and 117-7267. Verify your deck’s spindle part number on the old assembly or in your owner’s manual.
• Pulley included: The 125-5575 pulley is already mounted. If your deck uses a different pulley (e.g., 117-7267 without pulley), this assembly still works – just swap the pulley if needed.
• Measure spindle bolt pattern: Center-to-center bolt spacing is 3.5 inches. Measure your deck’s mounting holes to confirm fit.

Key Things to Know

• Quality: Aftermarket part, not OEM Toro. Build quality is generally good, but bearings may have a shorter lifespan than genuine Toro spindles.
• Installation difficulty: Moderate. Requires removing the deck, unbolting the old spindle (3 bolts), and transferring the blade and pulley. Have a torque wrench – spindle bolts need 70-80 ft-lbs.
• Common gotcha: The 125-5575 pulley has a 5/8-inch bore. If your deck uses a 3/4-inch pulley, you’ll need a different spindle or a bushing.
• Check blade alignment: After installation, spin the blade by hand to ensure it doesn’t rub the deck. Misalignment can cause vibration and uneven cut.

Should You Buy It

Buy this 2-pack if you need to replace both spindles on a 42- or 50-inch Toro TimeCutter or MX mower and want a budget-friendly alternative to OEM parts (which cost roughly double). It’s a solid value for DIY replacements on older machines, but if you demand maximum durability or have a commercial-use mower, stick with genuine Toro spindles.