8TEN Spindle Medium-Lift Blade Kit for Exmark Toro 42 inch Cut Deck QT22KA421 TimeCutter SS 4200 4216 4235 4260 MX

What It Is

This is a set of three medium-lift mower blades designed for 42-inch cutting decks, built to replace OEM blades on Exmark and Toro zero-turn mowers. They’re intended for regular residential mowing—good for bagging and moderate discharge—without the aggressive lift of high-lift blades.

Fitment & Compatibility

Check your deck size first: This kit fits 42-inch cut decks only. It’s a direct replacement for Toro TimeCutter models SS 4200, 4216, 4235, and 4260, plus the Exmark QT22KA421. Verify OEM part numbers: Cross-reference with Toro 131-5787, 131-5788, or Exmark 103-8622. Measure blade length (should be roughly 18 inches) and center hole diameter (typically 5/8 inch). Aftermarket kit—not OEM—so confirm your spindle pattern matches (three-hole, 4-inch spacing is common). Avoid if you have a 46- or 50-inch deck.

Key Things to Know

• Medium-lift trade-off: Good for bagging and side discharge, but less suction than high-lift blades—won’t handle wet, thick grass as well.
• Installation tip: Torque spindle bolts to 70-90 ft-lbs. Use a blade lock or block of wood to prevent spinning. Sharp side faces the deck.
• Balancing check: Aftermarket blades sometimes need balancing. Test with a blade balancer before mounting to avoid vibration and spindle wear.
• Durability: Heat-treated steel holds up for a season of weekly mowing on standard residential lawns. Not designed for commercial use or rocky terrain.

Should You Buy It

Buy this if you own a Toro TimeCutter 42-inch or compatible Exmark zero-turn, want an affordable aftermarket replacement, and primarily mow dry, maintained grass. Skip it if you need OEM exactness, cut in heavy wet conditions, or have a deck size other than 42 inches.