8TEN LawnRAZOR Blade for Cub Cadet MTD XT1-GT54 ST54 ZT1-54 54 Inch Deck 742P05086 742-05086 (Ultra High Lift) 3 Pack

What It Is

The 8TEN LawnRAZOR Ultra High Lift Blade is a 3-pack aftermarket replacement designed for 54-inch Cub Cadet and MTD zero-turn and lawn tractor decks, optimized for superior grass discharge and bagging performance in high-volume mowing.

Fitment & Compatibility

• Deck size: Fits only 54-inch cutting decks; verify your deck measures exactly 54 inches.
• Models: Compatible with Cub Cadet XT1-GT54, ST54, ZT1-54, and other MTD-built 54-inch decks using OEM part 742P05086 or 742-05086.
• OEM cross-reference: Replaces Cub Cadet/MTD 742-05086, 742P05086, 742-0634, and 942-05086.
• Measurements: Blade length is 20.5 inches, width 2.5 inches, center hole 5/8 inch, with a 0.250-inch thickness. Confirm your spindle bolt pattern matches (5-point star or 5/8" round hole).
• Check before buying: Measure your current blade length and center hole diameter. Ensure your deck has high-lift blade clearance—some low-clearance decks may require standard lift blades.

Key Things to Know

• Quality: 8TEN blades are heat-treated and coated for durability, but some users report slightly softer steel than OEM Cub Cadet blades.
• Installation: Easy swap—use a socket wrench and blade removal tool. Torque bolts to 70-90 ft-lbs. No balancing required out of box, but check for wobble.
• Performance: Ultra high lift creates strong suction for wet or thick grass, but increases engine load and may throw debris—wear eye protection. Not ideal for dry, sandy conditions (blade wear accelerates).
• Gotcha: These blades are longer and heavier than standard lift—ensure your deck’s spindle bearings and belt are in good condition to avoid premature wear.

Should You Buy It

If you own a Cub Cadet or MTD 54-inch deck and frequently mow thick, tall, or wet grass—or you use a bagger—these blades are a solid, cost-effective upgrade over standard OEM blades. Skip them if you mow dry, sparse lawns or prefer a mulching cut.