MaxPower's 33121EGB Mower Blade for 21 in. Cut EGO Mowers Replaces OEM # AB2101.

What It Is

The MaxPower 33121EGB is a replacement mulching blade designed for 21-inch cut EGO cordless lawn mowers. It replaces OEM part AB2101 and is built for mulching grass clippings into fine particles to return nutrients to the lawn.

Fitment & Compatibility

Before buying, verify three things: your mower deck size must be exactly 21 inches (not 20 or 22). This blade fits most EGO 21-inch models, including the LM2100, LM2101, LM2102SP, LM2110, LM2130SP, LM2135SP, and LM2142SP. Check your owner’s manual or current blade for OEM number AB2101. The blade measures 21 inches overall length with a 1-inch center hole and a 0.25-inch thickness. It will not fit EGO mowers with 20-inch or 22-inch decks, nor other brands like Greenworks or Ryobi.

Key Things to Buy

• Quality: Made from heat-treated steel with a durable coating. It’s a solid aftermarket alternative to OEM at a lower price, with consistent sharpness out of the box.
• Installation: Straightforward swap—remove the center bolt, replace the blade, and torque to manufacturer specs (typically 35–45 ft-lbs). Use a blade removal tool or block of wood to prevent spinning.
• Common Gotchas: This is a mulching blade only—not a lift blade for bagging. If you primarily bag clippings, you may get less airflow. Also, check blade balance after mounting; unbalanced blades cause vibration and uneven cuts.
• Wear: Replace after 25 hours of use or when nicked/dull. Sharpening is possible but shortens lifespan due to the hardened edge.

Should You Buy It

If you own a compatible 21-inch EGO mower and primarily mulch your grass, this blade offers OEM-level performance at roughly half the price. It’s a smart, durable upgrade for homeowners who want fine mulching without paying for the brand-name alternative. Avoid if you need a bagging or lift blade.