Keycci 115-2454-03 Lawn Mower Blades Compatible with to ro & Ex Mark 54" Deck, Mulching Blades Fit for to ro TimeCutter HD ZX5400 Titan MX5400 ZX5420, Replace 115-4999 115-4999-03 115-9650-03, 3 Pack

What It Is

This is a 3-pack of aftermarket mulching blades for 54" Toro and Ex Mark zero-turn mowers. Designed to cut grass into fine clippings that decompose quickly, they replace OEM part numbers 115-4999, 115-4999-03, and 115-9650-03.

Fitment & Compatibility

Before buying, verify your mower has a 54-inch cutting deck (not 50" or 60"). These fit Toro TimeCutter HD ZX5400, Titan MX5400, ZX5420, and Ex Mark models with 54" decks. Measure your existing blade length—OEM blades are approximately 18.5 inches long with a 5-point star center hole. Check that your spindle bolts use a 5/8" or 15/16" socket. These won’t fit 42" or 48" decks.

Key Things to Know

• Mulching vs. bagging: These blades have a curved, high-lift design. They work best for mulching; if you frequently bag or side-discharge, consider standard lift blades instead.
• Installation: Straightforward bolt-on replacement. Torque spindle bolts to 70-90 ft-lbs. Use a blade removal tool or block the blade to prevent spinning.
• Quality note: Aftermarket steel may dull faster than OEM. Sharpening after 10-15 hours of use is recommended for clean cuts.
• Wobble check: Inspect the star center hole for burrs; file down any rough edges to prevent vibration.

Should You Buy It

If you own a Toro or Ex Mark 54" zero-turn and primarily mulch, this 3-pack offers good value at roughly $11 per blade. For heavy-duty commercial use or if you need OEM durability for daily mowing, spending more on factory blades may be worthwhile. For residential use on a few acres, these will perform well.