8TEN LawnRAZOR Mower Blade Set for Cub Cadet MTD Troy Bilt LTX1040 RZT-L42 942-04308-X 42-inch Deck (Toothed)

What It Is

The 8TEN LawnRAZOR is a toothed (mulching) blade set designed to replace OEM blades on Cub Cadet, MTD, and Troy-Bilt riding mowers with a 42-inch cutting deck. It’s optimized for heavy mulching and bagging, not side-discharge.

Fitment & Compatibility

• Deck size: Fits only 42-inch (107 cm) decks. Measure your deck width before ordering.
• OEM part numbers: Replaces Cub Cadet/MTD 942-04308-X, 742-04308, and 942-04308. Also fits Troy-Bilt models with these numbers.
• Model examples: Works on Cub Cadet LTX1040, RZT-L42, and many Troy-Bilt Pony, Bronco, and MTD Yard Machine riders. Check your owner’s manual or existing blade part number.
• Blade dimensions: 16.5 inches long, 2.5 inches wide, 0.25 inch center hole. Verify these match your current blade.
• Set includes: 2 blades (for a two-blade spindle deck). Not for three-blade or 46/50/54-inch decks.

Key Things to Know

• Toothed edge: The serrated design cuts grass finer for better mulching, but dulls faster than a standard blade on sandy or rocky soil.
• Installation: Easy with a socket wrench and blade removal tool. Torque to 70–90 ft-lbs. Use thread locker if your spindles are worn.
• Balance: Blades come pre-balanced, but always check with a blade balancer after sharpening to avoid vibration.
• Common gotcha: Will not fit decks with a star-shaped center hole or offset spindle patterns. Verify hole shape before buying.

Should You Buy It

Buy this if you have a 42-inch Cub Cadet, MTD, or Troy-Bilt rider, want a budget-friendly mulching upgrade, and don’t mind replacing blades more often than standard flat blades. Skip it if you need a side-discharge or lift blade, or have a different deck size.