LawnRAZOR Blade for Cub Cadet MTD XT1-GT54 ST54 ZT1-54 54-Inch 742P05086-X 742-05086-X (Toothed) 3 Pack

What It Is

This is a set of three toothed (serrated) replacement blades designed for 54-inch Cub Cadet and MTD zero-turn and lawn tractors. The aggressive cutting edge is meant for thick, tall, or damp grass where standard blades struggle.

Fitment & Compatibility

Before buying, confirm your mower has a 54-inch cutting deck – this blade set is not for smaller decks. It directly replaces OEM part numbers 742P05086-X and 742-05086-X. Fits Cub Cadet models including XT1-GT54, ST54, and ZT1-54. Also compatible with many MTD-built 54-inch decks under other brands (check your deck’s blade bolt pattern – these use a 5/8” center hole and 1” arbor). Measure your current blade’s length (should be roughly 18.5 inches from tip to tip) and ensure the offset matches.

Key Things to Know

• Serrated edge wears faster than standard blades – expect to sharpen or replace more often, especially in sandy or rocky soil.
• Installation is straightforward with a socket and torque wrench (tighten to 70-90 ft-lbs). Use thread locker on bolts if you mow in heavy conditions.
• Balance check is critical – these aftermarket blades may need light balancing before install to avoid vibration.
• OEM vs aftermarket: These are a third-party alternative to Cub Cadet’s factory blades. Quality is solid for the price, but some users report slightly thinner steel than OEM.

Should You Buy It

Buy this set if you own a 54-inch Cub Cadet or MTD mower and regularly cut overgrown, damp, or tough grass where a toothed edge makes a noticeable difference. Skip it if you mow a clean, dry lawn – standard blades will last longer and give a finer finish.