Toro 3PK Genuine OEM Z Master 52" Atomic Mulching Blades 105-7796-03 105-7796

What It Is

This is a set of three genuine Toro OEM mulching blades designed specifically for 52-inch Z Master commercial zero-turn mowers. They use an “Atomic” blade design to finely chop clippings for superior grass recycling, reducing the need for bagging.

Fitment & Compatibility

Before buying, confirm your mower has a 52-inch cutting deck and is a Toro Z Master model (e.g., 74260, 74261, 74262, 74263, 74265, 74266, 74267, 74268, 74269, 74270, 74271, 74272, 74273, 74274, 74275, 74276, 74277, 74278, 74279, 74280, 74281, 74282, 74283, 74284, 74285, 74286, 74287, 74288, 74289, 74290, 74291, 74292, 74293, 74294, 74295, 74296, 74297, 74298, 74299). Measure blade length (should be ~20.5 inches), center hole diameter (should be a 5/8-inch hex), and thickness. These are OEM parts – aftermarket alternatives may vary in cut quality or durability. Check your deck’s blade count (3 blades) and ensure you have the correct spindle bolt size (typically 5/8-inch).

Key Things to Know

• Quality: Genuine Toro steel with heat-treated edges for longer life. Better balance and mulching performance than most aftermarket blades.
• Installation: Moderate difficulty. You’ll need a socket wrench and a blade removal tool or block of wood to prevent spinning. Torque bolts to 70-80 ft-lbs. Always sharpen or replace blades in sets for even cut.
• Common Gotchas: These are mulching blades – they have a higher lift and curved design. Do not use them for side-discharge or bagging without checking your deck’s baffle setup. Also, ensure your deck is level and blades are timed (if applicable) to avoid vibration or uneven cut.
• Maintenance: Replace every 25 hours of use or when edges show nicks/wear. Sharpen with a file or bench grinder, but avoid overheating the metal.

Should You Buy It

If you own a Toro Z Master with a 52-inch deck and want maximum mulching performance with OEM fit and durability, this set is a solid investment. It’s best for commercial operators or homeowners who mow frequently and prioritize grass recycling over bagging. Avoid if you need standard lift blades for side-discharge or if your deck is a different size.