8TEN LawnRAZOR Blade Set for Husqvarna YTH2242 RZ4222 42 Inch Deck 539112078 (High Lift) 3 Pack

What It Is

The 8TEN LawnRAZOR Blade Set is a high-lift replacement blade pack for 42-inch Husqvarna mower decks. Designed for side-discharge cutting and bagging, these blades create stronger airflow to lift grass for a cleaner cut and better clippings collection.

Fitment & Compatibility

• Deck size: Only fits 42-inch cutting decks.
• Models: Direct replacement for Husqvarna YTH2242, RZ4222, and many other 42-inch Husqvarna riders. Also fits Craftsman, Poulan, and AYP models using OEM part 539112078.
• Measurements: Blade length 20.5 inches, center hole 1 inch with a 5-point star drive, 0.25-inch thickness.
• Check: Verify your deck is 42 inches (measure blade tip to tip). Confirm your spindle has a star-shaped drive hole—some older decks use a round hole with a keyway. Cross-reference your OEM part number; this replaces 532539112078, 539112078, and 532415136.

Key Things to Know

• High lift = more power draw – These blades require a strong engine (15+ HP recommended). Underpowered mowers may bog down in thick grass.
• Installation tip – Use a torque wrench to tighten blades to 45–55 ft-lbs. Star drive can strip if over-torqued. Apply anti-seize to spindle threads.
• Sharpness out of box – Edges are sharp but not razor-finished. A quick light touch-up with a file improves cut quality.
• Balance – Blades come pre-balanced, but always check with a blade balancer before mounting. Unbalanced blades cause vibration and spindle wear.

Should You Buy It

Buy this set if you own a 42-inch Husqvarna or compatible AYP deck and need reliable high-lift blades for bagging or tall grass. The price is competitive with OEM, and the 4.8-star rating reflects solid steel and consistent sharpness. Avoid if your deck is under 20 HP or you use a mulching kit—these are strictly for discharge/bagging.