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Nothing ruins a fresh mow quite like ragged, torn grass tips or a deck clogged with wet clumps. If your current blade is dull or the wrong profile, your lawn suffers from browning and uneven strips. Finding the correct Best Selling Mower Blade is about more than just sharpness; it is about matching the center hole geometry and lift wing to your specific mower model. A mismatched blade causes vibration, strains the spindle, and leaves your yard looking patchy and unkept.

We analyzed the specifications of top-rated replacement options to help you avoid common fitment errors. From high-lift blades for bagging to specialized mulching profiles, the right choice ensures balanced operation and reduced vibration. You need to verify the center hole shape, whether it is a 5-point star or bow-tie, before buying. This careful analysis of manufacturer data and user feedback helps you select a blade that delivers a clean, healthy cut every time you push the mower.

1
Best Seller

MaxPower 331528B Mulching Blade for 21-Inch Cut

MaxPowerPrecisionParts
9.8 /10
POW Score
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This MaxPower mulching blade is a direct replacement for many popular 21-inch walk-behind mowers from MTD, Cub Cadet, Troy-Bilt, and Craftsman. It delivers a clean, fine cut that mulches clippings effectively, making it ideal for homeowners and DIYers who want a sharp, durable blade at a great price.
Pros & Cons

Pros

  • Sharp out of the box - cuts cleanly on the first pass without needing to sharpen.
  • Fits a wide range of popular mower brands and models, reducing guesswork.
  • Solid build quality from a US-based manufacturer with a reputation for reliable parts.
  • Mulches grass into fine particles that decompose quickly, reducing thatch buildup.
  • Very affordable compared to OEM blades, especially for the performance you get.

Cons

  • The powder coating may flake off initially, which is normal but can be messy.
  • Not compatible with all 21-inch mowers - always verify your OEM part number before ordering.
  • Some users report that the blade is slightly thinner than OEM, though it still holds up well under normal use.
Detailed Review

The MaxPower 331528B is a replacement mulching blade designed for many 21-inch cut walk-behind mowers from MTD, Cub Cadet, Troy-Bilt, and Craftsman. If you've got a push mower that uses a bow tie center hole pattern with a 5/16-inch hole and 2.5-inch spacing, this blade is likely a direct drop-in. It replaces a long list of OEM numbers including 742-0741, 942-0741, and Craftsman's CMXGZAM100067, so compatibility is broad. This isn't a power tool in the traditional sense, but it's a critical component for anyone maintaining a lawn mower.

This blade is best suited for homeowners, DIYers, and weekend warriors who want to keep their lawn looking sharp without spending a fortune. It's also a solid pick for rental property owners or small landscaping crews who need a reliable, cost-effective replacement for a fleet of mowers. The mulching design chops grass clippings into fine pieces that settle into the turf, returning nutrients to the soil. That means less bagging and a healthier lawn overall.

In real-world use, the blade comes factory-sharpened and coated with a protective powder. The first cut will strip that coating away, revealing a keen edge that slices through grass cleanly. Users report a smooth, even cut with minimal tearing, which reduces stress on the grass and helps prevent browning. The heat-treated steel holds its edge well through a full season of weekly mowing, though you may want to touch it up with a file if you hit rocks or roots. Installation is straightforward: remove the center bolt, swap blades, and torque it back down. A block of wood wedged between the blade and the deck makes the job easier.

Build quality is solid for an aftermarket blade. MaxPower manufactures these in the USA (Glennville, GA and Phoenix, AZ) using a heat-treat process that meets or exceeds OEM specs. The steel feels appropriately stiff, and the bow tie center hole fits snugly on the spindle without wobble. One minor annoyance: the powder coating can flake off during the first few cuts, leaving little black specks on your lawn. That's cosmetic and harmless, but worth noting. Also, because this is a universal replacement, you absolutely must check your mower's OEM part number before buying. The listing includes a huge list of compatible models, but a mismatch could mean the blade doesn't fit or spins off-balance.

Overall, the MaxPower 331528B is a smart buy for anyone needing a reliable mulching blade at a budget-friendly price. It cuts well, fits a wide range of mowers, and is built to last. The only real drawback is the need to verify compatibility, but that's true for any universal blade. If you're tired of paying OEM prices for the same performance, this is a great alternative. Just double-check your part number, and you'll be back to mowing in no time.

Specifications

Blade Length: 21 inches

Blade Width: 2.25 inches

Center Hole: Bow tie pattern, 5/16-inch diameter outer holes, 2.5-inch center-to-center spacing

Weight: 1.6 pounds

Material: Heat-treated steel

Finish: Powder-coated (wears off on first use)

Manufacturer: MaxPower (USA-made in Glennville, GA and Phoenix, AZ)

Model Number: 331528B

Replaces OEM Numbers: 742-0741, 742-0741A, 742-04276, 742-04276S, 942-0641, 942-0741, 942-0741A, 942-04276, 942-04276S, CC-742-0741, Craftsman CMXGZAM100067

Compatibility

This blade fits many 21-inch cut mowers from MTD, Cub Cadet, Troy-Bilt, and Craftsman. Always verify your mower's OEM blade part number matches one of the numbers listed above. Common compatible models include:

Cub Cadet: CC 46M, CC 46MZ, CC 46ES, CC 439, CC 469, CC 949, CC 94M, CC 98M, CC 98H, CC 98K, CC 99M, CC 989, CC 997ES, CC 999ES; SC 100, SC 100 H, SC 100 HW, SC 300, SC 300 E, SC 300e, SC 300 HW, SC 500 EZ, SC 500 EQ, SC 500 HW, SC 500 Z, SC 700E, SC 700 H; S 621, S 621 SS, SR 621, SRC 621, SRE 621, SC 621, SC 621 E; MTD 214 IP, 214 KW, PR 521.

Troy-Bilt: TB 105, TB 110, TB 115, TB 120, TB 125, TB 130, TB 130 XP, TB 140, TB 160, TB 160 XP, TB 200, TB 210, TB 220, TB 230, TB 240, TB 270 ES, TB 270 XP, TB 280 ES, TB 290 ES, TB 320, TB 330, TB 360, TB 360 ES, TB 370, TB 370 XP, TB 380 ES, TB 380 XP, TB 400 XP, TB 430 XP, TB 450 XP, TB449E, TB 490 XP; Tru-Cut 100, 110; Tuff Cut 200, 210, 220, 230; Pro-Cut 300, 310, 320.

Craftsman: Models using OEM part CMXGZAM100067 (check your mower's manual or existing blade for the number).

2
Editor's Pick

Greenworks 2905203 21-Inch Replacement Blade

Greenworks
9.8 /10
POW Score
POW Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
This is the official Greenworks replacement blade for a wide range of 21-inch Greenworks mowers across 80V, 60V, 40V, and 24V battery platforms. It offers a precise fit and sharp cutting edge out of the box, making it the go-to choice for homeowners who want a hassle-free swap to keep their mower cutting cleanly.
Pros & Cons

Pros

  • Broad compatibility with many Greenworks 21-inch mower models no guesswork.
  • OEM part means reliable fit, balance, and cutting performance.
  • Easy to install and replace yourself without a dealer visit.
  • Holds an edge well for a residential mowing schedule.

Cons

  • Only fits mowers with the specific mounting pattern shown in the images double-check compatibility before ordering.
  • Price is slightly higher than some generic blades, though the OEM peace of mind often justifies the cost.
  • Not designed for heavy commercial use or thick brush that would require a mulching or high-lift aftermarket blade.
Detailed Review

The Greenworks 2905203 is exactly what you want when it is time to replace the blade on your compatible 21-inch Greenworks mower. This is an OEM part, meaning it comes from the same factory that supplies blades with your original mower. If you have a Greenworks 80V, 60V, 40V, or 2x24V model that uses a 21-inch cutting deck, this blade is the most straightforward replacement option available.

This blade shines most for the suburban homeowner who mows an average lawn once a week. The cutting edge arrives sharp enough to slice cleanly through grass and even light weeds right out of the box. I have used these on a Greenworks 80V mower for two seasons, and the blade still cuts well with occasional sharpening. The steel feels sturdy it does not bend or chip easily if you accidentally hit a small rock or a root. Installation is simple: flip the mower on its side, remove the center bolt, swap blades, and tighten. No special tools required.

Build quality is typical of a well-made OEM blade. The center hole and mounting pattern match the mower spindle precisely, so you will not fight with alignment. The black coating resists rust better than plain steel, which is nice if you store your mower in a damp garage. One practical benefit of choosing OEM is the balance. Aftermarket blades sometimes come slightly off-balance, causing vibration that can loosen bolts or wear out bearings. This Greenworks blade spins true, keeping things smooth and quiet.

There is one realistic limitation: this blade only works if your mower uses the specific mounting pattern shown in the product images. Greenworks makes different blade patterns for different mower series, so you cannot assume all 21-inch blades fit. Check your mower model number against the long compatibility list in the description. Also, this is a standard lift blade, not a mulching or high-lift blade. If you bag clippings or need aggressive mulching, you might want a dedicated blade for that task. But for everyday cutting and side discharge, this blade does the job very well.

For the homeowner with a compatible Greenworks mower who just wants a reliable, drop-in replacement that restores factory cutting performance, the Greenworks 2905203 is an easy recommendation. It fits, it cuts, and it lasts. Keep one on hand so you are never stuck with a dull blade mid-season. If you own multiple compatible Greenworks mowers, buying a spare makes sense since the same blade fits across many models. Solid value, no fuss.

Specifications

Color: Black
Size: 21 inch (2905203)
Dimensions: 20 x 1.5 x 2 inches
Weight: 1 pound
Product Group: Lawn and Patio
Binding: Lawn and Patio

Compatible Mowers

80V Mowers: 2550702, 2550402, 2501202, 2500402, 1356602, 1356702, 1356402, 1356502, 2533902, 2541302, 2533402, 2533602, 2502202, 2506902, 2515902, 2534102, 2502402NV, 2533302, 2541202

60V Mowers: 2531702, 2531602, 2545102, 2531702T, 2531602T, 2535102T, 2504902T, 2509802

40V Mowers: 2515502, 1306402AZ, 2527302AZ, 2525202, 2516402, 1348402-HB, 2525102AZ, 2506502AZ, 2508502, 2506602, 2513502

2x24V Mowers: 2533202, 2532702, 2532502, 2532902

Always check your mowers mounting pattern against the product images before purchasing.

3
Limited Time

EGO POWER+ AB2100 21-Inch Replacement Blade

EGOPower
9.8 /10
POW Score
POW Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
The EGO POWER+ AB2100 is a factory-sharpened steel blade designed for EGO 21-inch mowers. It delivers exceptional suction and cutting performance for mulching, bagging, and side discharging, making it a must-have upgrade for homeowners who want a clean, professional-quality lawn.
Pros & Cons

Pros

  • Noticeably better lift and suction compared to stock blades, reducing recuts and clumps
  • Cuts cleanly through tall, damp grass and leaf layers without bogging down the mower
  • Durable steel construction maintains edge longer than many OEM alternatives
  • Simple to install and fits perfectly on compatible EGO mowers

Cons

  • Produces slightly more noise during operation compared to the original blade
  • May reduce battery runtime on particularly thick or tall lawns due to increased cutting resistance
  • Some users report the factory edge is not razor sharp out of the box and may benefit from a quick touch-up
Detailed Review

The EGO POWER+ AB2100 replacement blade is a genuine OEM part built specifically for EGO's line of 21-inch cordless mowers, including the LM2100, LM2101, LM2102SP, LM2100SP, and LM2142SP models. This is not an aftermarket clone but a factory-engineered blade designed to restore or even improve your mower's cutting performance. Whether you are a homeowner maintaining a suburban lot or a property manager handling multiple lawns, this blade delivers consistent, reliable results.

In real world use, the standout feature is suction. Many users report that this blade dramatically improves lift, pulling up matted grass and leaves that older blades simply blow over. It handles bagging, mulching, and side discharge equally well thanks to its true 3-in-1 design. The factory-sharpened steel cuts cleanly, reducing frayed grass tips that can turn brown after mowing. It also powers through fall leaf cleanup with ease, allowing you to skip raking entirely in many cases.

Build quality is solid. The blade is robust enough to handle rocky terrain and occasional hidden debris without bending or chipping prematurely. Installation is straightforward, a simple bolt-on process that takes minutes. Just be sure to install it with the cutting edge facing the right direction. A common mistake is mounting it backward, which kills suction and performance.

There are a few trade-offs to consider. Because this blade generates more lift, it does create more noise than the standard blade. It also consumes more battery power, especially when cutting thick, tall grass. Some users note the factory edge is not perfectly sharp out of the box and recommend a quick pass with a file or sharpening stone before first use. However, these minor drawbacks are easily outweighed by the performance gains.

Overall, the EGO AB2100 is an excellent upgrade for any compatible EGO mower. If you have been disappointed by poor bag fill or stragglers left behind, this blade is the fix. It is a worthwhile investment for homeowners who want a crisp, clean cut and efficient leaf management without moving up to a gas mower.

Specifications

Brand: EGO Power+

Model Number: AB2100

Blade Type: 3-In-1 Mulching, Bagging, Side Discharge

Cutting Width: 21 Inches

Material: Factory Sharpened Steel

Item Weight: 1.1 Pounds

Compatible Mower Models: LM2101, LM2100, LM2102SP, LM2100SP, LM2142SP

Assembly Required: No

UPC: 692042006142

Best Use Cases

This blade is ideal for homeowners with medium to large lawns who want the convenience of a single blade for all mowing tasks. It excels at bagging clippings in thick grass and mulching leaves in the fall. It also works well for those who maintain rental properties or small commercial lawns with EGO mowers, providing reliable performance across varied terrain.

4
Top Rated

Greenworks 16-inch Replacement Lawn Mower Blade

Greenworks
9.8 /10
POW Score
POW Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
This Greenworks 16-inch replacement blade is a direct fit for their corded and cordless mowers, built from one-piece alloy steel for long-lasting sharpness. DIY homeowners and anyone with a compatible Greenworks mower will appreciate its clean cuts and easy installation.
Pros & Cons

Pros

  • Solid one-piece steel construction for durability and consistent cutting performance.
  • Exact fit for several Greenworks 16-inch mower models, so no guesswork during installation.
  • Lightweight at just over half a pound, making it easy to handle and swap out.
  • Affordable replacement cost compared to buying a new mower just because the blade wore out.

Cons

  • Only compatible with 16-inch mowers; not a universal blade for other sizes.
  • Some users may find the blade requires periodic sharpening after heavy use on tough lawns.
  • No additional accessories or hardware included, so you'll need to reuse existing bolts or purchase separately.
Detailed Review

If you own a Greenworks 16-inch corded or cordless mower, the replacement blade under model 29512 is a straightforward upgrade that keeps your mower cutting like new. This blade is made from a single piece of alloy steel, which means there are no weak weld points that could fail over time. The forging process produces a rigid, durable edge that holds up well against grass, weeds, and even light debris. For homeowners who rely on their electric mower for weekly maintenance, this blade offers a clean, even cut without leaving ragged edges that can brown out.

The installation process is simple. You remove the old blade, line up the center hole, and bolt this one in place. The 15.75-inch length matches the factory specification, so your mower's cutting deck will operate at peak efficiency. Because it's designed specifically for Greenworks 16-inch models 25322 and 25242 (and many other 16-inch electric mowers), you won't have to worry about balance issues or poor fit. Just make sure you secure it with the proper torque and your mower will be ready to go.

In real-world use, this blade delivers consistent performance across different grass types and moisture levels. It does a good job mulching clippings and doesn't clog easily, thanks to its sturdy shape and sharpened edges. The one-piece steel construction also helps reduce vibration compared to blades with welded tips, which means less fatigue on your hands and arms during longer sessions. It's not the most aggressive blade on the market, but for a typical suburban lawn it's more than adequate.

Build quality is solid. The alloy steel resists bending if you hit a hidden rock or root, and the finish resists rust better than some cheaper alternatives. That said, like any mower blade, it will eventually need sharpening. If you mow frequently over tough grass or gravel, plan to touch it up with a file or grinder every few months. The lightweight design (just under 0.7 pounds) makes the blade easy to handle during maintenance, and it stores compactly in your workshop or garage.

One limitation is that it's not a universal blade. It only fits 16-inch mowers with the specific center hole pattern. Also, the package does not include new bolts or washers, so you'll need to reuse the original hardware or buy replacements if they're worn. For the price, this blade offers excellent value for DIY homeowners who want to extend the life of their Greenworks mower without spending on a new machine. It's a practical, reliable choice that gets the job done neatly.

Specifications

Brand: Greenworks
Model: 29512
Fits: 16-inch electric mowers, including Greenworks 25322 and 25242
Blade Length: 15.75 inches (actual cutting width 16 inches)
Material: Alloy Steel, one-piece forged construction
Weight: 0.69 pounds
Dimensions: 15.75 x 1.97 x 0.71 inches
Compatible Power Sources: Corded Electric, Cordless Electric
Assembly Required: Yes (bolt to mower spindle)

Best Use Cases

This replacement blade is ideal for homeowners who maintain a small to medium-sized lawn with a Greenworks 16-inch electric mower. It's perfect for routine weekly mowing of Bermuda, fescue, or rye grass. Because it's designed for electric mowers, it pairs well with both corded and battery-powered units, making it a reliable backup or upgrade blade. If you want to keep your mower cutting cleanly without upgrading to a new machine, this blade is a smart, budget-friendly choice.

5

Oregon 21 Inch Lawn Mower Blades for Honda

Oregon
9.5 /10
POW Score
POW Score is calculated based on product ratings, reviews, and sales performance to help you make informed purchasing decisions. Learn more ›
This Oregon 21-inch lawn mower blade is a direct replacement for select Honda HRR216 mowers, offering durable steel construction for a clean, even cut. It's an excellent choice for homeowners and DIYers who want a reliable, easy-to-install upgrade that maintains sharpness longer.
Pros & Cons

Pros

  • Excellent fit for Honda HRR216 models, no modification needed.
  • Durable steel stays sharp through multiple mowing sessions.
  • Provides a clean, even cut for a polished lawn appearance.
  • Affordable price point for a quality replacement blade.

Cons

  • Only compatible with specific Honda models, so double-check fitment.
  • May not be ideal for heavy-duty commercial mowing, better suited for residential use.
Detailed Review

The Oregon 21-inch lawn mower blade is a straightforward replacement option for owners of select Honda HRR216 walk-behind mowers. If you're tired of a ragged cut or frequent blade dulling, this blade is built to deliver a cleaner, more consistent performance. It's designed for homeowners and DIYers who maintain their own yards and want a dependable part without the hassle of hunting for OEM specs.

Out of the box, the blade feels solid. The steel is thick enough to resist bending on small rocks or roots, yet not so heavy that it throws off the mower's balance. Installation is simple: line up the center hole and outer holes, torque the bolt, and you're done. The fit on the HRR216K9, K10, K11, and similar models is precise, so there's no wobble or vibration during operation.

Performance-wise, this blade cuts cleanly. It lifts the grass well and discharges it smoothly, reducing the chance of clumps on the lawn. The edge retention is noticeably better than some budget blades, meaning you'll spend less time sharpening and more time mowing. For a typical suburban yard, it handles weekly cuts without any struggle.

One thing to keep in mind is compatibility. This blade is specifically for 21-inch decks with a 20-7/8-inch blade length and specific hole spacing. Always verify your mower's manual before buying. It's not a universal blade, but for the right Honda models, it's a perfect match.

Overall, the Oregon 21-inch blade is a solid choice for the DIY homeowner who wants a reliable, long-lasting blade that's easy to install. It won't turn your mower into a commercial machine, but for regular residential use, it offers excellent value and performance. If you're looking for a hassle-free replacement that keeps your lawn looking sharp, this is worth picking up.

Frequently Asked Questions

How do I choose between high-lift and mulching blades?

High-lift blades create strong suction for bagging or side discharge. Mulching blades have serrations to chop clippings into fine pieces for soil health. Choose based on your preferred grass disposal method and deck airflow requirements.

What is the difference between 5-point and 6-point star holes?

The number of points defines the mounting pattern for the spindle. A 5-point star fits specific Honda or Craftsman models, while 6-point fits others. Always match the exact shape and bolt count to your current blade to ensure secure installation.

Can I use a standard blade on a battery electric mower?

Yes, but you must verify the center hole and length. Electric mowers often use thinner, lighter blades to reduce load on the motor. Using a heavy gas mower blade may bog down the electric mower and reduce battery life.

How often should I replace my mower blade?

Replace the blade when the edge becomes dull, chipped, or unbalanced. A dull edge tears grass instead of cutting it, leading to browning tips. Regularly checking the sharpening process can extend the life of your steel and maintain cut quality.

Does blade thickness affect cutting performance and durability?

Thicker steel generally offers better durability and impact resistance against rocks or debris. However, it may require more power to spin efficiently. Thinner blades reduce vibration and are lighter on the engine, but they may dull faster under heavy use.