942-04308-X 942-04308 Mulching Toothed Blades for Cub Cadetx XT1 XT2 LT42 ZT1 RZT T110 42 Inch Zero Turn Mower Lawn Tractor 942-04308A 742-0616 for Troy Bilt Pony Bronco, 6 Point Star (2 Pack Black)

What It Is

This is a 2-pack of mulching blades designed for 42-inch cutting decks on Cub Cadet XT1, XT2, LT42, ZT1, RZT, and T110 lawn tractors, plus select Troy-Bilt Pony and Bronco models. The toothed edge lifts and recuts grass clippings into fine particles for natural fertilization, replacing OEM parts 942-04308, 942-04308A, and 742-0616.

Fitment & Compatibility

Before buying, confirm your deck is exactly 42 inches wide—these blades will not fit 46-inch or 50-inch decks. Check your spindle’s center hole shape: this blade uses a 6-point star (spline) drive, not a round or oval hole. Measure the blade length at 21 inches and the center hole diameter at 1 inch. Verify your model number matches the Cub Cadet or Troy-Bilt lines listed; also fits some MTD, Huskee, and Yard Machines models with the same star pattern. If your tractor uses a different blade part number (e.g., 942-04308B), cross-reference the star pattern and length before purchasing.

Key Things to Know

• Material quality: These are black-coated steel blades. They are sharp out of the box but may require balancing before installation to prevent vibration.
• Installation: Use a torque wrench set to 40–50 ft-lbs. The star pattern must align fully with the spindle—do not force it.
• Common gotchas: Mulching blades work best with a mulching plug or baffle kit installed. If you bag or side-discharge, these will not perform as well.
• Lift vs. toothed: The toothed edge provides less suction than high-lift blades, so avoid using them in wet or tall grass where clogging is likely.

Should You Buy It

Buy these if you own a 42-inch Cub Cadet or Troy-Bilt with a 6-point star spindle and want to mulch clippings effectively without bagging. They are a solid aftermarket replacement at a good price, but skip them if you need high-lift blades for bagging or if your deck uses a different drive pattern.