8TEN LawnRAZOR Blade for Toro Titan ZX5400 ZX5420 TimeCutter HD X5450 XS5450 54" 115-4999-03 (Toothed Mulching) 3 Pack

What It Is

The 8TEN LawnRAZOR Blade is a toothed mulching blade designed for 54-inch Toro zero-turn mowers. It replaces OEM part 115-4999-03 and is optimized for fine grass clipping mulching, not bagging or side discharge.

Fitment & Compatibility

Before buying, confirm your mower has a 54-inch deck and is one of these Toro models: Titan ZX5400, ZX5420, TimeCutter HD X5450, or XS5450. Measure your existing blade’s length: it must be 20 inches center-to-center. The center hole is 1 inch diameter, and the blade thickness is 0.203 inches. This is a direct replacement for OEM 115-4999-03, but double-check your blade’s part number—some 54-inch Toro decks use a different blade (e.g., 115-4999-02) with a different wing shape. If your current blade has a straight edge, this toothed version will change cutting behavior.

Key Things to Know

• Mulching only: The serrated edge is for fine mulching; it won’t work well with baggers or side-discharge kits.
• Installation: Torque blade bolts to 70-90 ft-lbs—use a torque wrench. Reverse threads on some Toro spindles (lefty-tighty, righty-loosey) are rare but check your manual.
• Performance: The toothed design cuts grass rather than shearing it, which can leave a slightly rougher cut on wet or tall grass. Best for dry, maintained lawns.
• Durability: 8TEN uses heat-treated steel; expect similar lifespan to OEM but check for warping after hitting hard objects.

Should You Buy It

Buy this if you own a 54-inch Toro Titan or TimeCutter HD/XS, want aggressive mulching action, and don’t need bagging or side discharge. It’s a solid aftermarket alternative at $42.95 for a 3-pack, but verify your exact blade part number first—mismatched wing profiles can cause poor cutting or vibration.