8TEN LawnRAZOR Mower Blade Set for Cub Cadet RZT MTD LT2000 42 Inch Deck 942-04308 742-04308 742-04312 (High-Lift)

What It Is

This is a set of three high-lift mower blades designed to replace OEM parts on Cub Cadet RZT, MTD, and LT2000 series mowers with a 42-inch cutting deck. The high-lift design creates stronger airflow for improved grass discharge and bagging performance, making it ideal for lawns with thick or tall grass.

Fitment & Compatibility

Before buying, verify your mower has a 42-inch deck and uses three blades (each roughly 16.5 inches long). These blades replace OEM part numbers 942-04308, 742-04308, and 742-04312. Compatible with Cub Cadet RZT 42, LT2000, and many MTD-branded tractors with similar decks (check your owner’s manual). Measure your existing blade’s center hole diameter (typically 5/8-inch) and overall length to confirm fit. Aftermarket fit is generally reliable, but minor differences in blade thickness or balance may occur.

Key Things to Know

• Installation: Simple swap with basic tools (socket wrench, jack stands). Always disconnect the spark plug and lift the mower safely.
• Quality: Reports good durability for residential use, but high-lift blades may dull faster on sandy or rocky lawns.
• Gotcha: High-lift blades increase engine load and can cause poor mulching or clumping in wet grass. Not ideal for mulching kits.
• Balance: Check blade balance after installation; some users report needing to file or rebalance for smooth operation.

Should You Buy It

If you own a Cub Cadet RZT, MTD, or LT2000 with a 42-inch deck and prioritize bagging or side-discharge performance over mulching, this is a solid, well-reviewed choice at a fair price. Avoid it if you mainly mulch or have a small, delicate lawn where high-lift blades might scalp or leave clumps.