Lawn Mower Blade Compatible with Greenworks 20inch / 21inch Mowers, 25022, 25112

What It Is

This is a replacement lawn mower blade designed for Greenworks 20-inch and 21-inch electric mowers, specifically models 25022 and 25112. It’s a standard mulching or cutting blade for residential use on push mowers.

Fitment & Compatibility

• Deck size: Must be 20 or 21 inches. Measure your mower deck’s cutting width to confirm.
• Model check: Fits Greenworks 25022 and 25112. Verify your mower’s model number on the sticker under the rear discharge door or on the frame.
• OEM vs aftermarket: This is an aftermarket blade. Compare the center hole shape (usually a star or oval) and blade length (approx. 20–21 inches) with your original. If your mower uses a specific bolt pattern (e.g., 5-point star), ensure this blade matches.
• Measurements: Check the blade’s center hole diameter (typically 1 inch or 7/8 inch) and the bolt size (usually 5/16 or 3/8 inch). Use a ruler or caliper to avoid buying the wrong fit.

Key Things to Know

• Quality: Single review with 5.0 rating suggests good fit, but low review count means limited long-term feedback. Inspect for sharpness and balance before installing.
• Installation: Easy with a socket wrench. Lift the mower, remove the center bolt, swap blades, and torque to about 30–40 ft-lbs. Always disconnect the battery/spark plug first.
• Common gotchas: Aftermarket blades may need balancing (use a blade balancer). If the blade wobbles, it can damage the spindle. Also, check if your mower requires a specific blade adapter (some Greenworks models use a plastic insert).
• Durability: Standard steel blade—expect 1–2 seasons of residential use before dulling. Sharpen with a file or grinder as needed.

Should You Buy It

Buy this blade if you own a Greenworks 20- or 21-inch mower model 25022 or 25112 and need a quick, affordable replacement for basic mulching. It’s a solid choice for DIY homeowners, but verify the center hole and bolt pattern match your original blade to avoid returns.