(3PCS) 115-2454-03 115-9650-03 Toothed Mulching Lawn Mower Blades - Replace OEM 115-4999 115-4999-03 - Fits Toro TimeCutter HD Titan ZX5400 ZX5420 MX5400 MR5400 Exmark Lawn Mower - For 54 Inches Deck

What It Is

This is a 3-pack of toothed mulching blades designed for 54-inch zero-turn mowers, replacing OEM part numbers 115-4999 and 115-4999-03. The serrated edge cuts grass into finer clippings for better mulching and nutrient recycling, ideal for Toro TimeCutter HD, Titan, and Exmark models.

Fitment & Compatibility

• Deck size: Only fits 54-inch cutting decks. Measure your deck width to confirm.
• Models: Compatible with Toro TimeCutter HD (all variants), Titan ZX5400, ZX5420, MX5400, MR5400, and select Exmark zero-turn mowers with 54-inch decks.
• OEM cross-reference: Replaces Toro 115-4999 and 115-4999-03. Also listed as compatible with 115-2454-03 and 115-9650-03.
• Measurements: Blade length is approximately 17.75 inches; center hole diameter is 0.5 inches (common for Toro spindles). Verify your spindle bolt size (usually 5/8-inch) before installation.
• Check before buying: Confirm your mower’s deck model number (stamped on deck or in manual) and that you need mulching blades, not standard lift blades.

Key Things to Know

• Quality: Aftermarket blades, but rated 4.8/5 from 18 reviews—users report sharp edges and good balance out of the box.
• Installation difficulty: Moderate. Requires a socket wrench, torque wrench (recommended 70-90 ft-lbs), and jack/ramps to access blades safely. Always disconnect spark plug first.
• Common gotchas: The “toothed” design may produce louder operation than standard blades. Check blade alignment after installation to avoid vibration. Do not use with bagging attachments unless specified—mulching blades can clog chutes.
• Durability: Heat-treated steel, but sharpening may be needed after 10-15 hours of use on tough grass. Replace if bent or nicked.

Should You Buy It

Buy this if you own a Toro or Exmark 54-inch zero-turn and want a cost-effective, highly-rated mulching blade set for fine clippings and lawn health. Avoid if you need bagging or standard lift blades, or if your deck is not 54 inches.