21 Inch Lawn Mower Blade Replacement AB2100 Compatible with EGO Power+ 56V Models LM2100 LM2101 LM2100SP LM2102SP, Black Mulching Lawn Mower Blade 21 Inch Deck

What It Is

This is an aftermarket 21-inch mulching blade designed to replace the OEM blade on EGO Power+ 56V cordless lawn mowers. It’s built for fine grass clipping mulching and is a direct fit for select 21-inch deck models.

Fitment & Compatibility

Before buying, confirm your mower’s deck size is exactly 21 inches (measure center hole to blade tip). This blade is compatible with EGO models LM2100, LM2101, LM2100SP, and LM2102SP. It replaces OEM part number AB2100. Check your mower’s model number on the underside of the deck or near the battery bay. This is an aftermarket blade, not made by EGO, so verify the center hole diameter (typically 1 inch) and blade thickness match your original. Not for use with EGO 20-inch or 22-inch deck models.

Key Things to Know

• Quality & balance: Users report decent steel thickness and sharpness out of the box, but some blades may need light balancing before installation. Use a blade balancer to avoid vibration.
• Installation difficulty: Easy swap with a socket wrench and a block of wood to lock the blade. Torque the center bolt to 35-40 ft-lbs (check your manual).
• Mulching performance: The curved wing design lifts clippings for finer mulching than standard bagging blades, but may struggle in wet or tall grass.
• Common gotcha: The blade is slightly lighter than OEM, which can affect cut quality on uneven terrain. Replace in pairs if your mower uses two blades (most EGO 21-inch models use a single blade).

Should You Buy It

If you own an EGO LM2100-series mower and want an affordable mulching blade that’s easy to install and works well for regular lawn care, this is a solid choice. Skip it if you need OEM durability for heavy-duty or commercial use—stick with genuine EGO parts for guaranteed fit and balance.