8TEN LawnRAZOR Mower Blade Set for MTD Cub Cadet RZT Troy Bilt 942-04053C 942-04053X 50 inch Decks (Toothed)

What It Is

This is a set of three toothed (“gator-style”) mulching blades designed for 50-inch cutting decks on select MTD, Cub Cadet, RZT, and Troy-Bilt zero-turn mowers. They replace OEM part numbers 942-04053C and 942-04053X, and are meant for users who want finer clippings and better mulching than standard blades.

Fitment & Compatibility

Before buying, measure your existing blades and verify these specs:

• Length: 20.5 inches (center hole to tip)
• Width: 2.5 inches
• Center hole: 5/8-inch diameter (round)
• Offset: 0.5-inch
• Deck size: Must be exactly 50 inches (three-blade setup)

These blades fit many MTD-built models, including Cub Cadet RZT 50, Troy-Bilt Mustang 50, and certain Yard Machines and Huskee zero-turns. They are not compatible with 42-inch or 54-inch decks, nor with Craftsman or John Deere models. Always cross-reference your mower’s model number with the listed OEM numbers (942-04053C and 942-04053X) before ordering.

Key Things to Know

• Quality: Made from heat-treated steel, but some users report the toothed edge wears faster than OEM or high-end aftermarket blades. Expect 1-2 seasons of normal use.
• Installation: Direct swap with no modifications needed. Use a torque wrench to tighten blade bolts to 70-90 ft-lbs (check your mower manual). The toothed design can make balancing slightly trickier—always balance after sharpening.
• Common gotchas: The “toothed” design is not a true mulching blade for all conditions. It works best in dry grass; wet or tall grass may cause clumping. Also, these blades are slightly heavier than OEM, which may affect engine load on smaller machines.
• No gasket or hardware included—you’ll reuse your existing bolts, washers, and spacers.

Should You Buy It

If you have a 50-inch MTD/Cub Cadet zero-turn and want an affordable upgrade from standard blades for finer mulching, this set is a solid value. But if you primarily cut wet or overgrown grass, or need maximum durability for commercial use, consider OEM or a premium brand instead.