Upgrade 04771200 (3 Pack) 18" Lawn Mower Blades Compatible with Gravely 52" Deck Lawn Mower Blades ZT X, ZT XL, fit for ARIENS IKON X, IKON XL, Replace for 00450300 03253800 Mower Blades

What It Is

This is a 3-pack of 18-inch aftermarket lawn mower blades designed for 52-inch cutting decks on Gravely ZT X and ZT XL zero-turn mowers, plus compatible Ariens IKON X and IKON XL models. They replace OEM part numbers 00450300 and 03253800.

Fitment & Compatibility

Before buying, confirm your deck measures exactly 52 inches and your current blades are 18 inches long (center hole to tip). Check that your mower model is a Gravely ZT X or ZT XL, or an Ariens IKON X or IKON XL. These are aftermarket blades, not OEM Gravely/Ariens, so verify the center hole diameter (typically ⅝” or ¾”) and blade offset match your spindle. Measure your old blade thickness—these are standard 0.25” thick—and ensure the blade shape (flat or curved) works for your grass type.

Key Things to Know

• Installation difficulty: Easy, but you’ll need a socket wrench and a blade removal tool. Use a torque wrench to tighten spindle bolts to 70-90 ft-lbs.
• Quality: At 4.2 stars, most users report decent cut quality and durability for the price, but a few note balance issues. Spin-test each blade on a balancer before installing.
• Common gotcha: The 3-pack covers all three spindles on a 52” deck. If your deck is a different size (e.g., 48” or 60”), these will not fit.
• Wear check: Replace blades when the cutting edge is dull or nicked, usually every 25-50 hours of mowing, or at least once per season.

Should You Buy It

If you own a Gravely ZT X/XL or Ariens IKON X/XL with a 52-inch deck and want a budget-friendly replacement for OEM blades that can save you $10-15 per set, this 3-pack is a solid choice. Just verify your exact model and blade measurements first, and be prepared to balance them for optimal performance.