8TEN Spindle High Lift Blade Kit for MTD Cub Cadet Troy Bilt 42 inch Deck RZT L42 S42 SX42 LT1500 LTX1040 LTX1042

What It Is

This is a set of three high-lift blades designed to replace the stock blades on 42-inch MTD-built decks used by Cub Cadet, Troy Bilt, and other brands. The high-lift design increases airflow under the deck for better grass clipping discharge and bagging performance, making it ideal for mulching or side-discharge mowing on residential lawns.

Fitment & Compatibility

Before buying, verify these three things:

• Deck size: Must be 42 inches (measured cutting width). This kit fits MTD stamped decks found on models like Cub Cadet RZT L42, S42, SX42, LT1500, LTX1040, and LTX1042, plus Troy Bilt equivalents (e.g., Pony, Super Bronco 42).
• OEM cross-reference: Replaces Cub Cadet OEM part numbers 942-04246, 942-04246A, 742-04246, or 742P. Check your owner’s manual or current blade part number.
• Center hole & spindle: Uses a 5-point star center hole (common MTD pattern). Measure your spindle’s star pattern—this is not compatible with round-hole or oval-hole spindles.

Do not buy if your deck is 46 or 54 inches, or if you have a different brand’s spindle pattern (e.g., John Deere’s 7-point star).

Key Things to Know

• Installation difficulty: Moderate. You’ll need a socket wrench, torque wrench (recommended 40–50 ft-lbs), and thread locker (e.g., Loctite) to prevent loosening. Lift or remove the deck for easier access.
• Quality: 8TEN blades are heat-treated steel, but some users report they may be slightly thinner than OEM. They balance well out of the box, but always check balance before installing.
• Common gotcha: High-lift blades increase engine load and can throw debris. Avoid using them in dry, dusty conditions or on very fine turf—they may scalp or leave marks if deck is not level.
• Wear: Expect to sharpen or replace every 20–25 hours of use, especially in sandy soil or tall grass.

Should You Buy It

Buy this kit if you want better bagging or side-discharge performance on your 42-inch MTD deck and are comfortable with a straightforward DIY install. It’s a solid value vs. OEM blades, especially if you’re replacing worn originals. Skip it if you have a different deck size, need mulching-only blades, or prefer OEM parts for warranty reasons.