Toro 4PK 108-9764-03 OEM 131-4547-03 22" Lawnmower Lawn Mower Atomic Blade 59534

What It Is

This is a genuine Toro 4-pack of Atomic blades (part #108-9764-03 / 131-4547-03) designed for 22-inch walk-behind mowers. The Atomic blade shape uses a wavy cutting edge to create a vacuum that lifts grass for a cleaner cut, ideal for mulching or bagging.

Fitment & Compatibility

• Deck size: Only fits 22-inch Toro mowers (do not use on 21" or 24" decks).
• Model check: Confirm your mower model number—these blades are standard on many Toro Recycler and Super Recycler models. Check your owner’s manual or the existing blade part number.
• OEM vs aftermarket: This is genuine Toro OEM, so it matches factory specs exactly. Aftermarket “Atomic-style” blades may differ in thickness or hole alignment.
• Measurements: Center hole diameter must be 1-inch (round) or 7/8-inch (star). Blade length is 22.25 inches end to end. Verify your current blade’s hole shape before ordering.
• Genuine part numbers: Also sold as 59534, 108-9764, or 131-4547. If your mower uses any of these, it’s a direct swap.

Key Things to Know

• Installation: Easy for DIYers—one bolt per blade. Torque to 35-50 ft-lbs. Use thread locker if bolts are reused.
• Sharpness: Atomic blades are not as sharp as standard blades out of the box but cut cleaner due to the wavy edge. Sharpen after 10-15 hours of use.
• Mulching performance: Excellent for mulching leaves and dry grass. Less effective in wet, thick grass—you may need to slow down or double-cut.
• Gotcha: The 4-pack is a good value if you have multiple identical mowers or plan to keep a spare set. Single blades are also available if you only need one.

Should You Buy It

Buy this if you own a 22-inch Toro Recycler or Super Recycler and want OEM-quality mulching blades that last. It’s a solid choice for homeowners who mow weekly and prefer genuine Toro parts for guaranteed fit and performance. Skip it if you have a different deck size or want a standard lift blade for bagging.