Grasscool 942-04053C Mower Blades for Cub Cadet 50 inch Deck Zero Turn Riding Lawn Tractor LT1050 LTX1050 RZT50 Replace 742-04056 942-04056 (6 Point Star Mounting Hole)

What It Is

This is a set of three 50-inch deck mower blades designed for Cub Cadet zero-turn and lawn tractors, specifically engineered to cut grass efficiently on residential properties. They replace OEM part numbers 742-04056 and 942-04056.

Fitment & Compatibility

Before buying, verify these four things:

• Deck size: This set fits only 50-inch cutting decks. Measure your deck width or check your model number.
• Mounting hole: The blades use a 6-point star mounting hole (also called a splined or star drive). This is critical—round or oval holes won’t work.
• Model compatibility: Fits Cub Cadet LT1050, LTX1050, RZT50, and similar models with a 50-inch deck and star mount. Also fits some MTD and Troy-Bilt equivalents.
• OEM vs aftermarket: These are aftermarket blades (Grasscool brand), not genuine Cub Cadet. They match OEM dimensions exactly but may differ slightly in steel thickness or coating.

Pro tip: Measure your existing blade length (should be ~20.5 inches) and check the center hole shape before ordering.

Key Things to Know

• Quality: Made of heat-treated steel with a powder coating to resist rust. Users report they stay sharp for 10–15 hours of mowing on typical lawns.
• Installation: Straightforward if you have a socket set and a torque wrench (tighten to 70–90 ft-lbs). Use a blade removal tool or block of wood to prevent spinning.
• Common gotcha: The star hole can be tight on some spindles. If it doesn’t slide on easily, lightly file the spindle or blade hole—don’t force it.
• Balance: These come pre-balanced, but always check with a blade balancer before installing to avoid vibration and spindle wear.

Should You Buy It

Buy these if you own a Cub Cadet 50-inch deck zero-turn or lawn tractor with a 6-point star mount, want a cheaper alternative to OEM blades, and mow a typical residential lawn. They’re a solid value for the price, but skip them if you need heavy-duty mulching or commercial-grade durability—opt for OEM or Gator blades instead.