742P05086-X 54 Inch Mulching Blade Set(3 Pack), Compatible with Cub Cadett MTD XT1-GT54 ST54 ZT1-54, Replacement for 54" Deck Lawn Mowers, Replaces 742P05086-X 490-110-C205 742-05086-X CMXGZAM110205

What It Is

This is a 3-pack of 54-inch mulching blades designed to replace worn OEM blades on Cub Cadet and MTD zero-turn and lawn tractors with a 54-inch deck. The set is intended for mulching—cutting grass into fine clippings that decompose quickly and return nutrients to the lawn.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 54 inches (measure from blade tip to blade tip across the deck). This set fits Cub Cadet XT1-GT54, ST54, and ZT1-54 models, plus other MTD-built 54-inch decks. It replaces OEM part numbers 742P05086-X, 742-05086-X, 490-110-C205, and CMXGZAM110205. Check your current blade’s center hole size (typically 7/8 inch or 1 inch) and overall length (54 inches tip-to-tip). If your deck uses a different spindle or blade pattern (e.g., 3-point star), this set won’t work. Also verify your model’s year—some older 54-inch decks may use different blade geometry.

Key Things to Know

• Quality vs. OEM: These are aftermarket blades. They may be slightly thinner or less balanced than genuine Cub Cadet blades, but most users report acceptable performance for residential use.
• Installation: Requires a socket wrench and torque wrench (tighten to 45-55 ft-lbs). Lift the deck safely or use a jack. Always replace all three blades at once for even cutting.
• Common gotcha: The center hole might be slightly smaller than OEM on some batches; check fit before tightening. If it binds, return immediately.
• Mulching vs. bagging: These blades are optimized for mulching. If you bag or side-discharge frequently, consider a high-lift blade set instead.

Should You Buy It

Buy this set if you own a Cub Cadet or MTD 54-inch deck tractor or zero-turn used primarily for mulching, and you want a budget-friendly replacement that’s readily available. Skip if you need OEM-grade durability for commercial use, or if your deck uses non-standard blade mounting.