8TEN LawnRAZOR Mower Blade for MTD Cub Cadet Troy Bilt CC999ES CC99M SC500E 942-0741A 942-0741 742-0741 (Toothed)

What It Is

The 8TEN LawnRAZOR Mower Blade is a toothed (serrated) replacement blade designed for select MTD, Cub Cadet, and Troy-Bilt walk-behind mowers. It’s intended for heavy-duty cutting, mulching, or bagging in tall or tough grass, not for fine manicured lawns.

Fitment & Compatibility

Before buying, confirm these four things:

• Deck Size: This blade is for 21-inch cutting decks only. Measure your deck width; if it’s not 21 inches, this won’t fit.
• Model Numbers: Directly replaces OEM part numbers 942-0741A, 942-0741, and 742-0741. Fits mowers like the Cub Cadet CC999ES, CC99M, SC500E, and similar MTD/Troy-Bilt models with those OEM numbers.
• Center Hole & Measurements: The center hole is a standard 7-point star (common on MTD/Cub Cadet). Blade length is 21 inches, width 2.25 inches, thickness 0.125 inches. Measure your old blade; if it matches, you’re good.
• OEM vs Aftermarket: This is an aftermarket blade (8TEN brand). It’s not OEM Cub Cadet, but it’s built to the same specs. Check that your mower uses a star-shaped center hole—some older models use a round hole with a keyway.

Key Things to Know

• Quality: Users report good durability in thick grass, but the serrated edge can leave a slightly rougher cut than a standard blade. Expect faster dulling if you hit dirt or rocks.
• Installation Difficulty: Easy—requires a socket wrench and a blade removal tool or block of wood to prevent spinning. Torque the center bolt to 35-45 ft-lbs. No special skills needed.
• Common Gotchas: The toothed design may cause more vibration on some mowers if the blade isn’t balanced. Always balance the blade after installation (use a blade balancer or nail in a wall). Also, check your mower’s blade adapter—if yours is worn or missing, this blade won’t mount securely.
• Warranty: 8TEN offers a 1-year warranty against defects, but not against wear from normal use.

Should You Buy It

Buy this blade if you have a compatible 21-inch MTD/Cub Cadet/Troy-Bilt mower and need a tough, affordable replacement for mulching or cutting heavy grass. It’s a solid value at $21.95, but skip it if you want a pristine, fine-cut lawn—stick with a standard (non-toothed) OEM blade for that.