42'' Deck Mulching Blades (942-0616 942-04126 742-0616 942-04308 742-04126 942-04308-X 942-04126-x) Fits Cub Ca det T Roy-Bilt Po ny Bron co LT42 ZT1 RZT-L42 XT1 Mower (2PCS)

What It Is

This is a set of two 42-inch mulching blades designed for residential zero-turn and lawn tractor mowers. They replace OEM blades for Cub Cadet, Troy-Bilt, and MTD-branded machines, cutting grass into fine clippings that decompose quickly.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 42 inches wide—these blades will not fit 46-inch or 54-inch decks. Cross-reference your OEM part number: this set replaces 942-0616, 942-04126, 742-0616, 942-04308, 742-04126, 942-04308-X, and 942-04126-x. Fits Cub Cadet LT42, ZT1, RZT-L42, XT1; Troy-Bilt Bronco; and MTD/Pony models with a 42-inch stamped deck. Measure your existing blade length (should be ~20.5 inches), center hole size (typically 5/8-inch), and spindle pattern. If your mower uses a different blade offset or thickness, these may not sit flush.

Key Things to Know

• Quality: These are aftermarket blades, not OEM. They’re made from heat-treated steel and should hold up for a season of moderate use, but may dull faster than factory blades on rocky or sandy lawns.
• Installation: Swap is straightforward—jack up the mower, block the deck, remove the center bolt with a socket wrench. Torque to 70–90 ft-lbs. No special tools needed.
• Gotcha: Mulching blades require a clean, dry deck and sharp blades to prevent clumping. If your grass is tall or wet, switch to side-discharge or bagging.
• Balance check: Always balance new blades before installing. An unbalanced blade can vibrate your spindle bearings loose.

Should You Buy It

If you need an affordable mulching blade set for a 42-inch Cub Cadet or Troy-Bilt mower and don’t require OEM branding, this is a solid value. It’s best for homeowners with standard grass types and moderate lawn size. Avoid if you mow heavy commercial turf or need the highest durability—OEM blades last longer in abrasive conditions.