942-0641 High Lift Blade for 21" Cutting Deck, 742-0641 Mower Blade Compatible with Cub Cad-et M-TD Troy-Bilt Tuff-Cut 220 Tuff-Cut 230 TB200 TB230, Replaces 742-04276S, 742-0741, 742-0741A, 2 Pack

What It Is

The 942-0641 (also labeled 742-0641) is a high-lift replacement blade set for 21-inch cutting decks, designed to improve grass clipping discharge and bagging performance. It’s intended for use on select Cub Cadet, MTD, Troy-Bilt, and Tuff-Cut walk-behind mowers, particularly models like the Tuff-Cut 220, Tuff-Cut 230, TB200, and TB230.

Fitment & Compatibility

• Deck size: Fits only 21" cutting decks. Measure your blade length from hole center to hole center (should be ~21") and your center hole diameter (typically 1" or 7/8").
• Model check: Directly compatible with Cub Cadet, MTD, Troy-Bilt, and Tuff-Cut models listed above. Also replaces OEM numbers 742-04276S, 742-0741, and 742-0741A.
• Aftermarket vs OEM: This is an aftermarket blade. If your mower uses a different OEM number (e.g., 742-0741B), verify the center hole size and blade shape match before buying.
• Measurement verification: Measure your existing blade’s length, width, and center hole diameter. High-lift blades are thicker at the trailing edge—confirm your deck’s blade spindle can accommodate the extra lift (some low-deck mowers may clog).

Key Things to Know

• Installation difficulty: Easy—requires a socket wrench and a blade removal tool (or a block of wood to prevent spinning). Torque to 30–50 ft-lbs. Always disconnect the spark plug first.
• Quality note: These are stamped steel, not hardened. They’ll dull faster than OEM or premium aftermarket blades if you hit rocks or roots. Sharpen or replace every 10–15 hours of use.
• Performance: High-lift design creates strong vacuum for bagging and side-discharge, but it increases engine load slightly. Not ideal for mulching unless your deck has a mulching plug.
• Common gotcha: If your mower has a “mulch” or “low-lift” blade originally, swapping to high-lift may cause clumping in wet grass. Use only in dry conditions for best results.

Should You Buy It

Buy this if you have a compatible Troy-Bilt, Cub Cadet, or MTD 21" mower and want better bagging or side-discharge performance without paying OEM prices. Avoid it if you mostly mulch or mow wet, thick grass—stick with a low-lift or mulching blade. For the price, it’s a solid budget option for homeowners who mow dry, manicured lawns.