Choosing the best 21 lawn mower blade is essential for achieving a clean and healthy cut for your lawn. There are various types, including mulching and bagging blades, and the 21 lawn mower blade deliver superior performance for most residential mowers.
A properly fitted 21 lawn mower blade in 2026 enhances your mower's efficiency and the overall appearance of your grass. Designed to match specific deck sizes and mower models, top-rated covers offer durability and precision.
This guide highlights the best 21 lawn mower blade to help you choose the right option for your specific lawn care needs and mower type.
10 best 21 lawn mower blade
“Before you buy, carefully consider your mowing habits and grass type. If you need to finely chop grass clippings to return nutrients to your lawn, a mulching blade is your best bet. If bagging your clippings is your top concern, invest in a blade designed for efficient collection with a clean cut. Always double-check the product listing for your specific mower's make and model and confirm compatibility with your deck size to avoid installation issues.”
best 21 lawn mower blade Comparison Table
| Product | Best For | Key Strength | Who It’s For | |
|---|---|---|---|---|
| Grasscool 21 lawn mower blade | Best For: Excellent Mulching Performance | Key Strength: Promotes Natural Lawn Fertilization | Who It's For: Troy Bilt Owners | Check Price |
| Maxpower 21 lawn mower blade | Best For: Broad Mower Compatibility | Key Strength: Includes Dual-Size Adapter | Who It's For: MTD/Cub Cadet Users | Check Price |
| A ABIGAIL 21 lawn mower blade | Best For: Reducing Grass Clumps | Key Strength: Broad Brand Compatibility | Who It's For: Popular Brand Owners | Check Price |
| EGO Power+ 21 lawn mower blade | Best For: Guaranteed Perfect Fit | Key Strength: Optimized For Mulching & Bagging | Who It's For: EGO Mower Owners | Check Price |
| Maxpower 21 lawn mower blade | Best For: Natural Lawn Fertilization | Key Strength: Wide Brand Compatibility | Who It's For: Popular 21-Inch Mowers | Check Price |
| EGO Power+ 21 lawn mower blade | Best For: Superior Mulching Performance | Key Strength: Genuine EGO Part | Who It's For: EGO Power+ Owners | Check Price |
| Maxpower 21 lawn mower blade | Best For: Universal Fitment | Key Strength: Simplifies Installation | Who It's For: Many Mower Models | Check Price |
| Greenworks 21 lawn mower blade | Best For: Optimal Cutting Performance | Key Strength: Precise Fit For Easy Install | Who It's For: Greenworks Owners | Check Price |
| Wadoy 21 lawn mower blade | Best For: Convenient 2-Pack | Key Strength: Direct Greenworks Replacement | Who It's For: Greenworks Mower Owners | Check Price |
| UDC Parts 21 lawn mower blade | Best For: Excellent Value 2-Pack | Key Strength: Significant Cost Savings | Who It's For: Budget-Conscious Owners | Check Price |
1. Grasscool 21 lawn mower blade – Affordable Pick
If you're a Troy Bilt owner looking to get the most out of your 21-inch walk-behind mower, the Grasscool TB110 Mulching Blade is a fantastic upgrade. Designed to replace OEM part numbers 942-0741A and 742-0741A, this blade offers a significant improvement in mulching performance, helping you achieve a healthier, more manicured lawn with less effort. It’s an ideal choice for homeowners who want to return valuable nutrients to their grass without the hassle of bagging clippings.
This mulching blade stands out by effectively chopping grass clippings into fine pieces that decompose quickly, feeding your lawn and reducing the need for fertilizers. Its robust construction ensures durability, and the precise fit for various Troy Bilt models means installation is straightforward. For those seeking a cleaner cut and a more eco-friendly approach to lawn care, the Grasscool TB110 presents a compelling value proposition.
Key Specifications
| Feature | Details |
|---|---|
| Blade Type | Mulching |
| Deck Size Compatibility | 21 inches |
| Replaces OEM Part Numbers | 942-0741A, 742-0741A |
| Material | High-quality Steel |
| Finish | Standard |
| Compatibility | Troy Bilt TB240, TB230, TB130, TB200, TB160, TB210, TB280ES, TB320, TB115, TB220 |
Reasons to Buy
- Excellent mulching performance that finely chops clippings.
- Promotes a healthier lawn through natural fertilization.
- Direct replacement for common Troy Bilt mower models and part numbers.
- Durable construction from high-quality steel for longevity.
- Saves time and effort by eliminating the need for bagging.
Reasons to Avoid
- May require sharpening sooner than premium, high-end blades.
- Not ideal for users who prefer side-discharging or bagging all clippings.
2. Maxpower 21 lawn mower blade – Best Value
If you're looking to get the most out of your 21-inch MTD, Cub Cadet, or Troy-Bilt lawn mower, especially when it comes to a clean cut and healthy lawn, the Maxpower 331528B Mulching Blade is a fantastic upgrade. This blade is designed to finely chop grass clippings, returning valuable nutrients to your soil, which can lead to a greener, healthier lawn with less effort. It's an ideal choice for homeowners who want a superior mulching performance without breaking the bank.
What sets this Maxpower blade apart is its robust construction and thoughtful design, specifically engineered for mulching. It replaces several common OEM part numbers, making it a versatile option for many compatible mowers. For those seeking an affordable yet effective way to improve their lawn's appearance and health through better mulching, this blade offers a compelling solution that punches above its weight class in terms of value and performance.
Key Specifications
| Feature | Details |
|---|---|
| Blade Type | Mulching |
| Blade Length | 21 inches |
| Center Hole Size | 1 inch (with adapter for 3/4 inch) |
| Material | High-strength steel |
| Replaces Part Numbers | 742-0741, 942-0741, CMXGZAM100067 |
| Compatibility | MTD, Cub Cadet, Troy-Bilt 21-inch mowers |
| Recommended Use | Mulching |
Reasons to Buy
- Excellent mulching performance that finely chops grass clippings.
- Durable construction made from high-strength steel for longevity.
- Broad compatibility with MTD, Cub Cadet, and Troy-Bilt 21-inch mowers.
- Includes an adapter for both 1-inch and 3/4-inch center holes.
- Significantly more affordable than many OEM replacement blades.
Reasons to Avoid
- May not be ideal for users who primarily bag their grass clippings.
- Like all blades, requires occasional sharpening to maintain optimal performance.
3. A ABIGAIL 21 lawn mower blade – Premium Choice
If you're looking to give your lawn mower a serious upgrade in performance, especially when it comes to mulching, this 2-pack of 21-inch mulching blades is a fantastic option. Designed to be compatible with a wide range of popular brands like Troy-Bilt, Cub Cadet, and Craftsman, these blades offer a cost-effective way to maintain a healthier, tidier lawn. They're ideal for homeowners who want to improve their mower's ability to finely chop grass clippings and return them to the soil as natural fertilizer, reducing the need for bagging.
What sets these mulching blades apart is their robust construction and specialized design, engineered to create a finer cut and better recirculation within the mower deck. This not only leads to a cleaner-looking lawn but also contributes to its overall health by enriching the soil. For those who are tired of dealing with clumps of grass or want to embrace a more eco-friendly approach to lawn care, these blades provide a noticeable improvement in mulching efficiency and overall cutting performance.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Quantity | 2 Blades |
| Material | High-strength steel |
| Compatibility | Troy-Bilt, Cub Cadet, Craftsman, MTD (Replaces 742-04100, 742-0741, 742-0741A, 942-0741, 942-0741A) |
| Blade Type | Mulching |
| Center Hole Diameter | 1 inch (with adapter for 3/4 inch) |
| Outer Hole Diameter | 5/16 inch |
| Overall Width | 2.5 inches |
Reasons to Buy
- Excellent mulching performance that finely chops grass clippings, reducing clumps.
- Broad compatibility with popular mower brands like Troy-Bilt, Cub Cadet, and Craftsman.
- Durable construction from high-strength steel for extended blade life.
- Significant value for money with a 2-pack offering at an affordable price.
- Promotes lawn health by returning nutrients to the soil through effective mulching.
Reasons to Avoid
- May require more frequent sharpening than premium, coated blades.
- Performance in extremely wet or very tall grass might be less optimal than specialized bagging blades.
4. EGO Power+ 21 lawn mower blade – Budget Friendly
If you own one of the popular EGO 21-inch electric lawn mowers, keeping it running at peak performance means having a sharp, reliable blade. The EGO POWER+ 21" Replacement Blade (AB2100) is designed specifically for their LM2101, LM2100, LM2102SP, LM2100SP, and LM2142SP models, ensuring a perfect fit and optimal cutting results for a beautifully manicured lawn. This blade is the ideal choice for homeowners looking to maintain their mower's cutting efficiency without breaking the bank.
This replacement blade offers a straightforward solution for anyone experiencing reduced cutting performance due to a dull or damaged blade. It’s engineered to deliver clean cuts, promoting healthier grass growth and a more professional finish. For those who value the convenience and eco-friendliness of their EGO electric mower, investing in a genuine EGO blade ensures compatibility and maintains the high standards of performance you expect from the brand.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Compatibility | EGO LM2101, LM2100, LM2102SP, LM2100SP, LM2142SP |
| Material | High-strength steel |
| Design | Mulching and bagging optimized |
| Manufacturer | EGO Power+ |
| Model Number | AB2100 |
| Installation | Direct replacement |
Reasons to Buy
- Guaranteed perfect fit for specific EGO 21" mower models
- Delivers clean, efficient cuts for a healthier lawn
- Durable steel construction for long-lasting performance
- Optimized for both mulching and bagging functions
- Easy to install, allowing for quick blade replacement
Reasons to Avoid
- May require sharpening more frequently if used in very tough conditions
- Not compatible with non-EGO or other EGO mower sizes
5. Maxpower 21 lawn mower blade – Top Performer
If you're looking to get the most out of your 21-inch lawn mower, especially when it comes to achieving a clean, manicured finish, the MaxPower 331737B Mulching Blade is a fantastic upgrade. Designed to fit a wide range of popular mower brands like Craftsman, Husqvarna, and Poulan, this blade is engineered to excel at mulching grass clippings, returning valuable nutrients to your lawn and reducing the need for bagging. It's an ideal choice for homeowners who want a healthier, more attractive lawn with less effort.
What truly sets the MaxPower 331737B apart is its robust construction and thoughtful design, specifically optimized for mulching. It effectively chops grass into fine pieces, allowing them to decompose quickly and feed your turf. This not only saves you time and hassle by eliminating the need to empty a grass bag but also contributes to a greener, more sustainable lawn care routine. For those seeking superior mulching performance and a durable replacement blade, this MaxPower option is a standout contender.
Key Specifications
| Feature | Details |
|---|---|
| Blade Type | Mulching |
| Blade Length | 21 inches |
| Center Hole Size | 1 inch |
| Offset | Yes |
| Lift | High |
| Material | Steel |
| Replaces OEM Numbers | 165833, 175052, 406712, 532175064, 594893001, 175064 |
Reasons to Buy
- Excellent mulching performance for a healthier lawn and reduced bagging.
- Durable steel construction ensures long-lasting use.
- Wide compatibility with many popular 21-inch mower brands.
- Promotes natural lawn fertilization by returning clippings.
- Straightforward installation for DIY maintenance.
Reasons to Avoid
- May not be ideal for very wet or excessively long grass where clumping could still occur.
- Requires proper safety precautions during installation, as with any mower blade.
6. EGO Power+ 21 lawn mower blade – Recommended
If you're an owner of select EGO POWER+ 21-inch electric lawn mowers, keeping your grass looking its best is paramount. The EGO POWER+ 21" Mulching Blade 2-Pack is designed to do just that, offering a seamless replacement for your existing blades and enhancing your mower's mulching capabilities. This pack is ideal for homeowners who want to maintain a healthy, manicured lawn with minimal fuss, ensuring that clippings are finely cut and returned to the turf as natural fertilizer.
What sets this blade set apart is its specific design for EGO mowers, promising a perfect fit and optimal performance. By choosing these genuine EGO blades, you're not just replacing a worn part; you're investing in the continued efficiency and effectiveness of your electric mower, contributing to a greener lawn and a more sustainable approach to yard care.
Key Specifications
| Feature | Details |
|---|---|
| Blade Type | Mulching |
| Quantity | 2 Blades |
| Compatibility | EGO POWER+ 21" Electric Lawn Mowers (LM2133, LM2130, LM2135SP, LM2130SP, LM2156SP, LM2150SP) |
| Material | High-strength steel |
| Finish | Corrosion-resistant coating |
| Package Dimensions | 21.5 x 2.5 x 1 inches |
| Weight | 2.5 pounds |
Reasons to Buy
- Superior mulching performance for a healthier lawn.
- Genuine EGO part ensures perfect fit and optimal mower function.
- Durable construction with high-strength steel for longevity.
- Easy to install, allowing for quick DIY maintenance.
- Enhances lawn health by returning nutrients to the soil.
Reasons to Avoid
- Not compatible with EGO mower models outside the specified 21" range.
- Requires a basic tool kit and some mechanical aptitude for installation.
7. Maxpower 21 lawn mower blade – Recommended
If you're looking to give your lawn a cleaner cut and a healthier appearance, the Maxpower 331981B 21-Inch Universal Gold Metal Mulching Lawn Mower Blade is a fantastic option to consider. Designed for a variety of walk-behind mowers, this blade excels at mulching grass clippings, returning valuable nutrients back into your soil. It's an ideal upgrade for homeowners who want to improve their lawn's health and reduce the need for bagging.
This mulching blade stands out for its durable construction and its ability to finely chop grass, preventing clumping and promoting a manicured look. Its universal design means it's compatible with many popular mower brands, making it an accessible and practical choice for a wide range of users seeking a superior cut and an easier lawn care routine.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Blade Type | Mulching |
| Material | High-strength steel |
| Coating | Gold powder coat |
| Center Hole Size | 1 inch (with adapter for 7/16" and 9/16") |
| Offset | Yes |
| Lift | High |
| Replaces OEM Numbers | Many (e.g., John Deere AM104590, MTD 742-0616) |
Reasons to Buy
- Excellent mulching performance that finely chops clippings.
- Universal fitment with included adapters simplifies installation on many mowers.
- Durable construction ensures a long service life.
- Promotes lawn health by returning nutrients to the soil.
- Reduces the need for bagging, saving time and effort.
Reasons to Avoid
- Not ideal for very thick, wet grass where clumping might still occur.
- Requires periodic sharpening and balancing for optimal performance.
8. Greenworks 21 lawn mower blade – Recommended
If you own a Greenworks 21-inch electric mower and your blade is showing signs of wear and tear, or you simply want a reliable spare, the Greenworks Replacement Lawn Mower Blade is a solid choice. Designed to seamlessly fit specific Greenworks mower models, this blade promises to restore your mower's cutting performance, ensuring a clean and even cut for a healthier, more attractive lawn. It's an essential accessory for any Greenworks owner looking to maintain their equipment and achieve optimal mowing results.
This replacement blade offers a straightforward solution for keeping your Greenworks mower in top condition. Its durable construction and precise design mean you won't have to sacrifice cutting quality when it's time to replace your old blade. For those who value efficiency and a well-maintained yard, this genuine Greenworks part provides peace of mind and ensures your mower continues to perform as intended, making lawn care a less demanding chore.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Compatibility | Greenworks MO40L4413, MO40L03, MO48L4422 models |
| Material | Steel |
| Type | Mulching/Bagging Blade |
| Manufacturer | Greenworks |
| Package Contents | 1 Replacement Blade |
Reasons to Buy
- Ensures optimal cutting performance for specific Greenworks 21-inch mowers.
- Made from durable steel for long-lasting use.
- Designed for a precise fit, making installation straightforward.
- Supports both mulching and bagging functions for versatile lawn care.
- Genuine Greenworks part guarantees compatibility and quality.
Reasons to Avoid
- Only compatible with a limited range of Greenworks mower models.
- Requires periodic sharpening and maintenance to maintain peak performance.
9. Wadoy 21 lawn mower blade – Recommended
If you own a Greenworks 21-inch electric mower and are looking to keep your lawn looking its best, the Wadoy 21" Lawn Mower Blade 2 Pack is a solid replacement option. Designed to be compatible with several popular Greenworks models, these blades offer a straightforward way to maintain your mower's cutting performance without breaking the bank. Whether your current blade is worn out or you simply want a spare on hand, this two-pack provides a convenient solution for homeowners seeking reliable performance.
What sets this Wadoy blade set apart is its direct compatibility with specific Greenworks mower models, ensuring a proper fit and function. This means you can get back to mowing with confidence, knowing your mower is equipped with blades designed to deliver a clean cut. For those who value efficiency and a well-maintained yard, investing in quality replacement blades like these can make a noticeable difference in the overall health and appearance of your lawn.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Material | High-strength steel alloy |
| Quantity | 2 blades |
| Compatibility | Greenworks 21-inch mowers (MO40L03, MO48L4422, MO40L4413) |
| Part Number Compatibility | C3208101 |
| Finish | Standard metal |
Reasons to Buy
- Direct replacement for popular Greenworks 21-inch mower models.
- Comes as a convenient 2-pack, offering a spare or immediate replacement option.
- Constructed from a durable steel alloy for reliable cutting performance.
- Provides a clean cut, promoting lawn health and a manicured appearance.
- Offers excellent value for money compared to OEM blades.
Reasons to Avoid
- May require sharpening and balancing for optimal performance and longevity.
- Not designed for heavy-duty commercial use or extremely tough conditions.
10. UDC Parts 21 lawn mower blade – Recommended
If you're looking to keep your lawn looking its best without breaking the bank, the UDC Parts 942-0741A 21-inch mulching mower blades are a fantastic option. Designed as a direct replacement for a wide range of popular mower models from Troy-Bilt, Craftsman, and Cub Cadet, these blades offer a cost-effective way to restore your mower's cutting performance. They are particularly well-suited for homeowners who prefer mulching their grass clippings back into the lawn, enriching the soil and reducing the need for bagging.
This 2-pack of mulching blades provides excellent value, ensuring you have a spare on hand for the next season or if one blade gets damaged. They are engineered to deliver a clean cut and efficient mulching action, helping to maintain a healthier and more attractive lawn. For those seeking an affordable yet reliable solution to replace worn-out or damaged mower blades, the UDC Parts 942-0741A set stands out as a smart choice.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Blade Type | Mulching |
| Material | High-quality steel |
| Quantity | 2 blades per pack |
| Compatibility | Troy-Bilt, Craftsman, Cub Cadet, Yard Machines (specific models listed) |
| Part Numbers Replaced | 742-0741, 742-0741A, 942-0741, 942-0741A, CMXGZAM100067 |
| Center Hole Diameter | Standard (fits original equipment) |
Reasons to Buy
- Excellent value with a 2-pack offering significant cost savings.
- Designed for efficient mulching, returning nutrients to your lawn.
- Broad compatibility with popular Troy-Bilt, Craftsman, and Cub Cadet models.
- Durable construction made from high-quality steel for reliable performance.
- Easy to install as a direct replacement for OEM blades.
Reasons to Avoid
- May require more frequent sharpening than premium, hardened steel blades.
- Not ideal for users who prefer bagging clippings due to their mulching design.
Our Top Picks for the best 21 lawn mower blade
Here are our top 3 picks based on performance, durability, and user satisfaction.
Wrap Up the best 21 lawn mower blade
Choosing the right blade is essential for efficient lawn care and a healthy yard. Consider the type of cut you need, the compatibility with your mower, and the overall durability of the blade. For those seeking optimal mulching, the options reviewed provide excellent results.
Investing in a quality 21 lawn mower blade can make a significant difference in your mowing experience and the appearance of your lawn. Whether you prioritize mulching, bagging, or simply a clean cut, there's a blade designed to meet your needs.
FAQs Regarding 21 lawn mower blade
What is the best type of blade for mulching?
Mulching blades are specifically designed to finely chop grass clippings and return them to the lawn, acting as a natural fertilizer.
How often should I replace my 21 lawn mower blade?
Blade replacement frequency depends on usage and conditions. Generally, inspect your blade for wear and tear every season and replace it if it's significantly damaged or dull.
Can I use a blade designed for a different brand of mower?
It's crucial to ensure compatibility. While some blades are universal, it's best to match the blade length and mounting system to your specific mower model to avoid damage or poor performance.
Do these blades fit all 21-inch mowers?
Not all 21-inch blades are universal. Always check the product description and your mower's manual for specific compatibility information, especially for brands like Troy Bilt or Cub Cadet.
What is the difference between a mulching blade and a high-lift blade?
A mulching blade cuts grass into fine pieces to decompose on the lawn, while a high-lift blade creates strong suction to lift grass for bagging.
Are there any safety precautions I should take when changing a 21 lawn mower blade?
Yes, always disconnect the spark plug to prevent accidental starting. Wear sturdy gloves to protect your hands from sharp edges.
How can I tell if my 21 lawn mower blade needs sharpening or replacement?
Look for visible nicks, bends, or excessive wear. If the grass is being torn rather than cleanly cut, or if your mower seems to be struggling, it's time for maintenance.
Where can I find the part number for my mower's blade?
The part number is usually found on the old blade itself, in your mower's owner's manual, or on the manufacturer's website.
