52" Deck Mower Blades Fit for Toro Z Master Z500 Z400 Z441 Z449 Z450 Lawn Mowers Replaces OEM 105-7796-03 105-7796 105-7779-03 (Toothed Mulching) 3 Pack

What It Is

This is a 3-pack of toothed mulching blades designed for 52-inch cutting decks on Toro Z Master commercial zero-turn mowers. They slice clippings into fine particles for nutrient recycling, ideal for frequent mowing where bagging isn’t needed.

Fitment & Compatibility

• Deck size: Only for 52-inch Toro Z Master decks. Measure your deck width—do not assume 52" fits all models.
• Models confirmed: Z500, Z400, Z441, Z449, Z450 series. Check your specific model number (e.g., Z452) on the mower plate.
• OEM replacement: Replaces Toro 105-7796-03, 105-7796, and 105-7779-03. These are aftermarket, not OEM—quality may vary slightly.
• Measurements: Blade length must be exactly 21 inches (center hole to tip). Verify your current blade length before ordering.
• Center hole: Fits standard 5/8-inch hex spindle. Confirm your spindle size; some older decks may differ.
• Gotcha: Toothed mulching blades require higher spindle speed or engine RPM to work effectively—check your deck’s RPM rating.

Key Things to Know

• Quality: Aftermarket, but rated 5.0/5 (1 review). Expect similar performance to OEM at lower cost, but watch for uneven balance out of the box—check with a blade balancer.
• Installation: Moderate difficulty. Requires lifting mower, removing deck, and using a torque wrench (spec: 70-90 ft-lbs). Use thread locker on spindle bolts.
• Common gotcha: Toothed edges dull faster than standard blades on sandy or rocky lawns. Inspect after every 10 hours of use.
• Mulching vs. discharge: These are mulching-only—do not use with side discharge chute unless you want clumps. Keep deck clean to prevent clogging.

Should You Buy It

Buy these if you own a 52-inch Toro Z Master Z400/Z500 series and want an affordable aftermarket mulching blade pack for fine clippings. Avoid if you need standard lift blades for bagging or discharge, or if your lawn is often wet/tall (mulching blades struggle there). For the price, it’s a solid value for routine mulching replacement.