Greenworks Replacement Lawn Mower Blades (Fits : 20' Mower / 25302) Review

Overview

The Greenworks Replacement Lawn Mower Blades (model 25302) are a set of two 20-inch mulching blades designed specifically for select Greenworks cordless and electric mowers. Priced at just over $17 and backed by over 3,300 ratings with a stellar 4.5-star average, these blades are built for homeowners who own a compatible Greenworks 20-inch mower and want a reliable, drop-in replacement that maintains cutting performance without breaking the bank.

Who Should Buy This

1. Greenworks 20-inch mower owners – If you have a Greenworks 20-inch cordless or electric mower (like the 25302, 25142, or similar models), these blades are a perfect fit. They’re engineered to match the OEM specs, so you won’t need to fiddle with adapters or worry about bolt patterns.

2. Homeowners with small to medium lawns (under 1/4 acre) – These blades are ideal for typical suburban yards where a 20-inch deck is the sweet spot. They’re light enough to keep your battery-powered mower running efficiently, and they mulch clippings well for a clean look.

3. Budget-conscious DIYers – At $17.16 for a two-pack, these blades are a steal compared to buying singles at big-box stores. If you sharpen your own blades, having a spare set on hand means you can swap them out quickly and sharpen the dull ones at your leisure.

4. Eco-minded homeowners – If you’ve already ditched gas for a quiet, zero-emission electric mower, these blades keep that clean operation going. No fuel, no fumes, and no hassle—just a sharp cut that extends the life of your battery.

Key Features Breakdown

• 20-inch blade length – This is the standard size for Greenworks’ most popular cordless and electric mowers. It’s not too big for tight corners, but wide enough to cover ground efficiently. If your mower has a 20-inch deck, these are the blades you need.

• Mulching design – The blades feature a curved, lifted shape that recirculates clippings back into the lawn. This isn’t a bagging blade; it’s built to chop grass into fine particles that decompose quickly, feeding your lawn naturally. You’ll see less bagging and more green, healthy grass.

• Two-blade pack – You get two blades in the box, which is smart for a few reasons. First, you can install a fresh pair and keep the old ones as backups. Second, it’s cheaper per blade than buying singles. Third, it reduces downtime—swap both at once and you’re done.

• Steel construction – These are stamped steel blades, not hardened alloy. That means they’re affordable and easy to sharpen with a file or grinder, but they won’t hold an edge as long as premium aftermarket blades. For the price, it’s a fair trade-off.

• Compatibility – Designed to fit Greenworks models like 25302, 25142, 25252, and many others with a 20-inch deck. Always double-check your model number, but this is the most common replacement for Greenworks’ mid-range electric mowers.

Pros

1. Perfect OEM fit – These blades drop right into compatible Greenworks mowers. No wobble, no grinding, no alignment issues. The hole pattern and center bolt spacing match factory specs exactly.

2. Great value for a two-pack – At $17.16, you’re paying roughly $8.58 per blade. That’s about half the price of what you’d pay for a single blade at a hardware store. For the price of lunch, you get a full set.

3. Effective mulching performance – The blade design lifts grass and cuts it multiple times before it settles. On dry, normal-height grass, you’ll see fine clippings that disappear into the lawn. No clumping or windrowing.

4. Lightweight and easy to install – These blades are thin and light, so swapping them is a 10-minute job. No heavy lifting or wrestling with stuck bolts. Just flip the mower, remove the center bolt, and slide the new blade on.

5. Quiet operation – Because they’re balanced and match the mower’s deck, these blades run smooth and quiet. You won’t get the vibration or rattling you sometimes see with generic replacements.

6. Widely available and highly rated – With over 3,300 reviews and a 4.5-star average, you’re buying a proven product. Thousands of homeowners have used these without complaint.

Cons

1. Not for heavy-duty or wet grass – These are standard mulching blades, not high-lift or bagging blades. If you regularly mow wet, thick grass, you’ll get clumping and a less even cut. They’re best for dry, well-maintained lawns.

2. Steel is soft – dulls faster than premium blades – The stamped steel construction means the edge wears down quicker than hardened blades. Expect to sharpen or replace them every 10–15 mows, depending on your lawn conditions.

3. Limited compatibility – These only fit Greenworks 20-inch mowers. If you have a different brand or a 21-inch deck, they won’t work. Always verify your mower model before buying.

4. No bagging or side-discharge options – These blades are strictly for mulching. If you prefer to bag clippings or use a side chute, you’ll need a different blade design. They’re a one-trick pony.

Bottom Line

The Greenworks Replacement Lawn Mower Blades (25302) are a no-brainer for anyone with a compatible 20-inch Greenworks mower. They deliver OEM-level fit and mulching performance at a fraction of the cost of buying singles, and the two-pack gives you a spare for minimal downtime. They’re not built for heavy-duty abuse or wet grass, but for the average homeowner with a dry, well-kept lawn, these blades are a reliable, affordable choice. If you own a Greenworks 20-inch electric mower, buy these. If you don’t, look elsewhere.

Frequently Asked Questions

Q: Will these blades fit my Greenworks 25302 mower?
A: Yes, these blades are specifically designed to fit the Greenworks 25302 and many other 20-inch models, including the 25142, 25252, and 25312. Always double-check your mower’s model number, but this is the most common OEM replacement for those decks.

Q: How often should I replace these blades?
A: For normal use on a typical lawn (mowing once a week), plan to replace them every 10–15 mows, or when you notice tearing instead of cutting. If you hit rocks or sticks, inspect them immediately. You can sharpen them a few times before