21 Inch Lawn Mower Blade - Mulching Blade for Cub Cade MTD

The Fismiuta 21-Inch Lawn Mower Blade is a replacement cutting component designed for owners of compatible Troy-Bilt, Craftsman, Cub Cadet, and MTD walk-behind mowers. It provides a direct replacement option for worn or dull factory blades, restoring clean cutting and efficient grass handling across standard residential yards.

This blade features an upgraded 32mm lift height, compared to standard 28mm profiles, which creates 50 percent stronger airflow lift. That added suction helps prevent deck clogging, speeds up cutting passes, and packs grass more efficiently into collection bags. The versatile 3-in-1 functionality allows you to switch between bagging, side discharging, and finely mulching clippings to return nutrients back into your turf.

Constructed from high-carbon steel, the blade is built to handle rugged terrain and stubborn weeds without losing its integrity. A specialized rust-resistant coating protects the metal right out of the box during setup, though this finish is designed to wear away naturally as you mow. When maintenance time arrives, the steel edge can be easily sharpened to keep your lawn cut crisp and level.

A critical limitation of this blade is spindle fitment. It exclusively mounts to mowers with a bow tie shaped center hole pattern and will not fit round, star, or other spindle configurations. You will also need to verify your mower deck measures exactly 21 inches before purchasing to ensure proper clearance.

Verdict: The Fismiuta 21-Inch Mower Blade is a smart, capable replacement for homeowners needing a high-lift, 3-in-1 cutting blade for compatible Troy-Bilt, Craftsman, or MTD mowers. As long as your machine uses a bow tie spindle, it delivers strong grass lift and dependable cutting strength.

• Deck Size: 21 inches
• Length: 21 inches (533mm)
• Width: 2-1/4 inches (57mm)
• Thickness: 9/64 inches (3.4mm)
• Air Lift Height: 1-1/8 inches (32mm)
• Center Hole Shape: Bow Tie
• Material: High-carbon steel
• Functions: 3-in-1 (mulching, bagging, side discharging)

A great fit if you:

• Own a 21-inch Troy-Bilt, Craftsman, Cub Cadet, or MTD mower with a bow tie spindle.
• Want stronger grass lift to reduce clogging and fill collection bags efficiently.
• Need a versatile blade that supports mulching, bagging, and side discharge.
• Prefer high-carbon steel blades that can be resharpened at home.

Consider something else if you:

• Have a mower with a circular, star, or non-bow-tie spindle design.
• Operate a mower with a deck size other than 21 inches.

What center hole shape does this blade have?
This blade features a bow tie center hole and only fits mowers equipped with matching bow tie spindles.

What cutting modes does this blade support?
It is a 3-in-1 blade engineered for mulching, bagging, and side discharging clippings.

Will the protective coating stay on the blade permanently?
No, the rust-resistant coating protects the high-carbon steel during storage and installation, but it naturally wears off as the blade is used.

Which OEM part numbers does this blade replace?
It replaces OEM numbers 742-0741, 742-0741A, 742-04100, 742-04276, 742-04276S, CC-742-0741, 942-0741, 942-0741A, 942-04276, 942-04276S, 490-100-C089, and Craftsman CMXGZAM100067.