Choosing the best 21 inch mulching lawn mower blade is essential for maintaining a lush and healthy lawn. There are various types, including high-lift and low-lift designs, and the 21 inch mulching lawn mower blade deliver superior mulching capabilities by finely chopping grass clippings.
A properly fitted 21 inch mulching lawn mower blade in 2026 enhances your mower's performance and the overall appearance of your yard. Designed to match specific mower models and cutting decks, top-rated covers offer durability and efficient mulching.
This guide highlights the best 21 inch mulching lawn mower blade to help you choose the right option for your lawn care needs.
10 best 21 inch mulching lawn mower blade
“Before you buy, carefully consider your mower's make and model. If you need a blade specifically for Troy-Bilt mowers, a Grasscool TB110 is your best bet. If compatibility with various brands like Craftsman or Husqvarna is your top concern, invest in a Maxpower 331737B with a circle mounting pattern. Always double-check the product listing for your specific deck size and confirm compatibility with your mower's mounting system to avoid installation issues.”
best 21 inch mulching lawn mower blade Comparison Table
| Product | Best For | Key Strength | Who It’s For | |
|---|---|---|---|---|
| Grasscool 21 inch mulching lawn mower blade | Best For: Excellent Mulching Performance | Key Strength: Broad Troy Bilt Compatibility | Who It's For: Cost-Conscious Upgraders | Check Price |
| Maxpower 21 inch mulching lawn mower blade | Best For: Lawn Nourishment | Key Strength: Universal Residential Mower Fit | Who It's For: Lawn Health Focused | Check Price |
| Maxpower 21 inch mulching lawn mower blade | Best For: Superior Mulching | Key Strength: High-Strength Steel Construction | Who It's For: MTD/Cub Cadet Owners | Check Price |
| A ABIGAIL 21 inch mulching lawn mower blade | Best For: Efficient Mulching | Key Strength: Two-Pack Cost Savings | Who It's For: Multi-Brand Mower Owners | Check Price |
| Grasscool 21 inch mulching lawn mower blade | Best For: Nutrient Return | Key Strength: Precise Troy Bilt Fit | Who It's For: Walk-Behind Mower Users | Check Price |
| EGO Power+ 21 inch mulching lawn mower blade | Best For: Mulching Performance | Key Strength: Perfect EGO Mower Fit | Who It's For: EGO Power+ Owners | Check Price |
| Maxpower 21 inch mulching lawn mower blade | Best For: Finely Chopping Clippings | Key Strength: Wide Brand Compatibility | Who It's For: OEM Alternative Seekers | Check Price |
| Grasscool 21 inch mulching lawn mower blade | Best For: Manicured Lawn Look | Key Strength: Reduces Mowing Time | Who It's For: Time-Saving Gardeners | Check Price |
| EGO Power+ 21 inch mulching lawn mower blade | Best For: Lawn Appearance | Key Strength: Reduces Bagging Need | Who It's For: Disposal-Averse Users | Check Price |
| Chway 21 inch mulching lawn mower blade | Best For: Reducing Yard Waste | Key Strength: Craftsman/Husqvarna Compatibility | Who It's For: Waste-C | Check Price |
1. Grasscool 21 inch mulching lawn mower blade – Affordable Pick
If you're looking to give your Troy Bilt 21-inch walk-behind mower a new lease on life, the Grasscool TB110 Mulching Blade is a compelling option. Designed to replace OEM part numbers 942-0741A and 742-0741A, this blade is specifically engineered to excel at mulching grass clippings, returning vital nutrients to your lawn and reducing the need for bagging. It's a straightforward upgrade for owners of various Troy Bilt models, including the TB240, TB230, TB130, TB200, TB160, TB210, TB280ES, TB320, TB115, and TB220.
This mulching blade offers a cost-effective way to enhance your lawn care routine. By finely chopping grass clippings and returning them to the soil, it promotes a healthier, greener lawn while also saving you time and effort associated with emptying a grass bag. For homeowners seeking a simple yet effective solution to improve their mowing results and lawn health, the Grasscool TB110 presents a strong value proposition.
Key Specifications
| Feature | Details |
|---|---|
| Blade Type | Mulching |
| Blade Length | 21 inches |
| Center Hole Diameter | 5-point star |
| Replaces OEM Part Numbers | 942-0741A, 742-0741A |
| Material | High-strength steel alloy |
| Compatibility | Troy Bilt 21-inch deck mowers (specific models listed) |
| Finish | Standard |
Reasons to Buy
- Excellent mulching performance for a healthier lawn
- Broad compatibility with many Troy Bilt 21-inch mower models
- Durable construction for reliable use
- Cost-effective upgrade compared to OEM blades
- Reduces the need for bagging and saves time
Reasons to Avoid
- May not perform as well in very wet or thick grass compared to a bagging blade
- Not suitable for side-discharge or bagging-only operations
2. Maxpower 21 inch mulching lawn mower blade – Best Value
If you're looking to give your lawn a cleaner, healthier cut without breaking the bank, the Maxpower 331981B 21-Inch Universal Gold Metal Mulching Lawn Mower Blade is a fantastic option. Designed for residential use, this blade excels at mulching grass clippings, returning valuable nutrients to your soil and reducing the need for bagging. It's an ideal upgrade for homeowners seeking a more efficient and eco-friendly way to maintain their yards.
This mulching blade stands out for its durable construction and its ability to finely chop grass, leading to a healthier lawn and less yard waste. For those who want to improve their lawn's appearance and soil health while simplifying their mowing routine, the Maxpower 331981B offers a compelling blend of performance and affordability.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Blade Type | Mulching |
| Material | High-strength steel |
| Center Hole Diameter | 0.625 inches |
| Outer Hole Diameter | 2.875 inches |
| Offset Holes | Yes |
| Coating | Gold powder coat finish |
Reasons to Buy
- Excellent mulching performance that nourishes your lawn
- Durable construction for long-lasting use
- Universal fit for most 21-inch residential mowers
- Promotes a healthier lawn by returning nutrients and retaining moisture
- Cost-effective upgrade for improved cutting results
Reasons to Avoid
- May require slower mowing speeds in very thick or wet grass
- Requires proper balancing after sharpening to prevent vibration
3. Maxpower 21 inch mulching lawn mower blade – Premium Choice
If you're looking to give your lawn a cleaner, healthier cut, a quality mulching blade is essential. The Maxpower 331528B Mulching Blade is designed to excel at this task, transforming grass clippings into fine mulch that nourishes your lawn. This blade is a fantastic option for homeowners with 21-inch cut lawnmowers from popular brands like MTD, Cub Cadet, and Troy-Bilt, offering a significant upgrade over standard blades. It’s built for durability and performance, ensuring a consistent, manicured look with every pass.
This particular mulching blade stands out for its robust construction and its ability to effectively break down grass clippings. By finely chopping and returning these clippings to your lawn, it acts as a natural fertilizer, reducing the need for chemical additives and promoting a greener, more vibrant turf. For those who value a well-maintained yard and appreciate the benefits of mulching, the Maxpower 331528B offers a compelling blend of performance, compatibility, and value.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Blade Type | Mulching |
| Material | High-strength steel |
| Center Hole Diameter | 1 inch (with adapter for 7/16 inch) |
| Replaces OEM Part Numbers | 742-0741, 942-0741, CMXGZAM100067 |
| Compatibility | MTD, Cub Cadet, Troy-Bilt 21-inch mowers |
Reasons to Buy
- Significantly improves lawn health through superior mulching.
- Broad compatibility with many MTD, Cub Cadet, and Troy-Bilt 21-inch mowers.
- Durable high-strength steel construction for long-lasting performance.
- Reduces the need for bagging clippings and chemical fertilizers.
- Provides a clean, professional-looking cut.
Reasons to Avoid
- May require an adapter for the center hole, adding a minor step to installation.
- Not ideal for very tall or wet grass, where clumping might still occur without multiple passes.
4. A ABIGAIL 21 inch mulching lawn mower blade – Budget Friendly
Keeping your lawn looking its best doesn't have to break the bank, and these 21-inch mulching blades are a prime example. Designed to fit a wide range of popular mower brands like Troy Bilt, Cub Cadet, and Craftsman, this two-pack offers an economical solution for maintaining a healthy and tidy yard. If you're looking to upgrade your mower's cutting performance, especially for mulching grass clippings back into your lawn, these blades are a solid choice for homeowners seeking value and effectiveness.
What sets this blade set apart is its straightforward functionality and broad compatibility. Instead of searching for a single, often expensive, OEM replacement, you get two durable blades that are engineered to mulch effectively, reducing the need for bagging and enriching your soil. This pack is perfect for those who want to maintain their mower's cutting deck without the hassle of finding specific part numbers, offering a convenient and cost-effective way to ensure a clean cut and a healthier lawn.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Quantity | 2 Blades |
| Material | Steel Alloy |
| Mulching Capability | High |
| Compatibility | Troy Bilt, Cub Cadet, Craftsman, MTD |
| Replaces Part Numbers | 742-04100, 742-0741, 742-0741A, 942-0741, 942-0741A |
| Deck Size | 21-inch cutting decks |
Reasons to Buy
- Excellent value with a two-pack offering significant cost savings.
- Designed for efficient mulching, promoting lawn health and reducing yard waste.
- Broad compatibility with popular mower brands like Troy Bilt, Cub Cadet, and Craftsman.
- Durable steel alloy construction for reliable performance.
- Easy to install, making DIY mower maintenance straightforward.
Reasons to Avoid
- May require sharpening more frequently than premium, high-lift blades for aggressive mulching.
- Not designed for bagging or side-discharge applications, primarily optimized for mulching.
5. Grasscool 21 inch mulching lawn mower blade – Top Performer
If you're a Troy Bilt owner with a 21-inch walk-behind mower, specifically models like the TB110, TB230, TB240, TB130, TB210, TB320, TB220, or TB280ES, and you're looking to enhance your lawn's health and appearance, then the Grasscool 942-0741A Mulching Blades are a fantastic upgrade. These blades are designed to finely chop grass clippings, returning valuable nutrients to your soil, which leads to a greener, healthier lawn with less effort. They offer a direct replacement for your original equipment, making the upgrade process straightforward and hassle-free.
What sets these Grasscool blades apart is their robust construction and precision engineering, specifically tailored for mulching. Unlike standard blades that simply cut, these are shaped to create a vortex that repeatedly cuts clippings into tiny pieces. This not only improves the mulching action but also contributes to a cleaner cut on your grass, reducing stress on the blades and promoting faster healing. For homeowners who value a pristine lawn and an efficient, eco-friendly approach to lawn care, these blades represent excellent value and performance.
Key Specifications
| Feature | Details |
|---|---|
| Blade Type | Mulching |
| Deck Size Compatibility | 21 inches |
| Compatible Brands | Troy Bilt |
| Compatible Models | TB110, TB230, TB240, TB130, TB210, TB320, TB220, TB280ES |
| Replaces Part Numbers | 742-0741A, 942-0741A |
| Material | High-strength steel |
| Finish | Powder-coated (typical for durability) |
| Quantity | Typically sold as a single blade, check packaging |
Reasons to Buy
- Significantly improves lawn health through effective mulching and nutrient return.
- Designed for a precise fit on many popular Troy Bilt 21-inch walk-behind mowers.
- Constructed from durable, high-strength steel for long-lasting performance.
- Provides a clean, even cut, reducing clumping and leaving a professional finish.
- Offers a cost-effective and environmentally friendly alternative to bagging clippings.
Reasons to Avoid
- Not suitable for side-discharge or bagging-only mowers; requires a mulching-capable deck.
- May require a blade balancing check after installation, though typically well-balanced.
6. EGO Power+ 21 inch mulching lawn mower blade – Recommended
If you own a compatible EGO electric lawn mower and are looking to achieve a superior cut while nourishing your lawn, the EGO POWER+ 21" Mulching Blade 2-Pack is an essential accessory. Designed specifically for models like the LM2133, LM2130, LM2135SP, and others in the 21-inch series, these blades transform your mower into a powerful mulching machine, finely chopping grass clippings and returning them to your lawn as natural fertilizer. This not only saves you the hassle of bagging but also promotes a healthier, greener yard.
This 2-pack of EGO mulching blades offers excellent value and performance, ensuring you always have a sharp blade ready for optimal cutting. They are engineered to work seamlessly with EGO's high-performance electric mowers, delivering a clean, consistent cut that you can see and your lawn will appreciate. For EGO mower owners prioritizing lawn health and a pristine finish, these blades are a straightforward and effective upgrade.
Key Specifications
| Feature | Details |
|---|---|
| Blade Type | Mulching |
| Quantity | 2 Blades |
| Compatibility | EGO 21" Mowers (LM2133, LM2130, LM2135SP, LM2130SP, LM2156SP, LM2150SP) |
| Material | High-strength steel |
| Finish | Corrosion-resistant coating |
| Design | Optimized for fine mulching |
Reasons to Buy
- Significantly improves mulching performance for a healthier lawn.
- Designed for a perfect fit and optimal function with specific EGO 21" mowers.
- Durable construction ensures long-lasting sharpness and reliability.
- 2-pack offers excellent value and ensures you always have a spare blade.
- Easy to install, allowing for quick blade replacement.
Reasons to Avoid
- Not compatible with EGO mowers outside the specified 21" models.
- Requires occasional sharpening to maintain peak mulching efficiency.
7. Maxpower 21 inch mulching lawn mower blade – Recommended
If you're looking to give your lawn a cleaner cut and a healthier finish, a quality mulching blade can make all the difference. The MaxPower 331737B is designed specifically for 21-inch cut mowers from popular brands like Craftsman, Husqvarna, and Poulan, offering a robust solution for homeowners seeking to improve their lawn care routine. This blade is engineered to finely chop grass clippings, returning valuable nutrients to your soil and reducing the need for frequent bagging.
This particular mulching blade stands out for its durable construction and its ability to effectively mulch grass, transforming clippings into a fine texture that decomposes quickly. It's a cost-effective replacement for several OEM part numbers, making it a convenient and smart choice for maintaining your mower and your lawn's appearance without breaking the bank.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Blade Type | Mulching |
| Material | High-strength steel |
| Center Hole Diameter | 5/8 inch |
| Offset | Yes |
| Blades Included | 1 |
| Replaces OEM Numbers | 165833, 175052, 406712, 532175064, 594893001, 175064 |
Reasons to Buy
- Excellent mulching performance, finely chopping clippings for lawn health.
- Durable construction from high-strength steel for longevity.
- Wide compatibility with many popular 21-inch mower brands.
- Cost-effective alternative to OEM replacement blades.
- Promotes a healthier lawn by returning nutrients to the soil.
Reasons to Avoid
- May not be ideal for extremely thick or wet grass, where bagging might still be necessary.
- Requires basic mechanical skill and safety precautions for installation.
8. Grasscool 21 inch mulching lawn mower blade – Recommended
If you're looking to give your lawn a cleaner, healthier cut and reduce the need for bagging, the Grasscool 406712 mulching blade is a fantastic option for your 21-inch push walk-behind mower. Designed to finely chop grass clippings and return them to your lawn as natural fertilizer, this blade offers a significant upgrade over standard blades, promoting a greener and more vibrant yard with less effort. It's an ideal choice for homeowners who value efficiency and the health of their turf.
This mulching blade stands out by effectively transforming clippings into a nutrient-rich mulch, enriching your soil and reducing waste. Its durable construction and precise design ensure a consistent, high-quality cut across various grass types, making lawn maintenance a more satisfying and less labor-intensive task. For those seeking to improve their lawn's appearance and sustainability, this Grasscool blade is a smart investment.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Mounting Pattern | Circle |
| Material | High-strength steel |
| Compatibility | Craftsman, Husqvarna 21-inch push walk-behind mowers |
| Replaces Part Numbers | 165833, 175064, 189028, 532189028 |
| Mulching Capability | High |
| Durability | Enhanced |
Reasons to Buy
- Significantly improves lawn health by returning nutrients to the soil.
- Provides a cleaner, more manicured look by finely chopping clippings.
- Reduces mowing time and effort by eliminating the need for bagging.
- Durable construction ensures long-lasting performance.
- Wide compatibility with popular Craftsman and Husqvarna mower models.
Reasons to Avoid
- May not be ideal for extremely wet or overgrown conditions where clumping could still occur.
- Requires periodic sharpening to maintain optimal mulching performance.
9. EGO Power+ 21 inch mulching lawn mower blade – Recommended
If you own a compatible EGO POWER+ electric lawn mower and are looking to maintain a pristine lawn, the EGO POWER+ 21" Mulching Blade (AB2100) is an essential accessory. Designed specifically for models like the LM2101, LM2100, LM2102SP, LM2100SP, and LM2142SP, this blade is engineered to deliver a superior mulching performance, finely chopping grass clippings and returning them to your lawn as natural fertilizer. It's the perfect upgrade for homeowners who want to enhance their mower's efficiency and contribute to a healthier, greener yard with minimal effort.
This mulching blade isn't just a replacement part; it's an upgrade that transforms your EGO mower's cutting capability. By efficiently processing grass, it reduces the need for bagging and disposal, saving you time and effort while enriching your soil. For those who value a clean cut, effective mulching, and the convenience of a well-maintained lawn, this EGO blade offers a compelling solution that integrates seamlessly with their existing EGO POWER+ mower system.
Key Specifications
| Feature | Details |
|---|---|
| Blade Type | Mulching |
| Blade Length | 21 inches |
| Compatibility | EGO LM2101, LM2100, LM2102SP, LM2100SP, LM2142SP |
| Material | High-strength steel |
| Design | Optimized for fine mulching |
| Installation | Direct replacement |
Reasons to Buy
- Significantly improves lawn appearance by finely chopping clippings.
- Enhances lawn health by returning vital nutrients to the soil.
- Reduces the need for bagging and disposing of grass clippings, saving time.
- Durable construction ensures a long lifespan and reliable performance.
- Designed for a perfect fit and optimal mulching on compatible EGO mowers.
Reasons to Avoid
- Not compatible with all EGO mower models; requires checking your specific model number.
- May not be ideal for extremely wet or overgrown conditions where bagging might be preferred.
10. Chway 21 inch mulching lawn mower blade – Recommended
If you're looking to give your lawn a cleaner, healthier cut and reduce yard waste, the Chway 331737B 406712 Mulching Lawn Mower Blade is a solid choice for your 21-inch push or walk-behind mower. Designed to finely chop grass clippings and return them to your lawn as natural fertilizer, this blade can significantly improve the appearance and vitality of your turf. It's an excellent upgrade for homeowners who want to achieve a professional-looking finish without the hassle of bagging or raking.
This Chway mulching blade stands out for its durable construction and precise engineering, ensuring it effectively shreds clippings while maintaining compatibility with popular mower brands like Craftsman and Husqvarna. By transforming clippings into nutrient-rich mulch, it not only saves you time and effort but also contributes to a more sustainable lawn care routine. For those seeking an efficient and effective mulching solution, this blade offers a compelling blend of performance and value.
Key Specifications
| Feature | Details |
|---|---|
| Blade Length | 21 inches |
| Mounting Pattern | Circle |
| Material | High-strength steel |
| Compatibility | Craftsman, Husqvarna 21-inch deck push/walk-behind mowers |
| Replaces Part Numbers | 165833, 175064, 189028 |
| Mulching Capability | High |
Reasons to Buy
- Significantly improves lawn health by returning nutrients to the soil.
- Reduces yard waste and eliminates the need for bagging clippings.
- Durable construction ensures a long service life.
- Wide compatibility with popular 21-inch Craftsman and Husqvarna mowers.
- Easy to install, allowing for a quick upgrade.
Reasons to Avoid
- May not be ideal for very wet or overgrown grass, which can still lead to clumping.
- Requires regular mowing to maintain optimal mulching effectiveness.
Our Top Picks for the best 21 inch mulching lawn mower blade
Here are our top 3 picks based on performance, durability, and compatibility.
Wrap Up the best 21 inch mulching lawn mower blade
Choosing the right 21 inch mulching lawn mower blade involves considering your mower's compatibility, the desired mulching performance, and the blade's overall durability. A well-chosen blade can transform your lawn care routine, promoting a healthier lawn through effective mulching.
Investing in a quality blade, like the ones we've highlighted, ensures a cleaner cut and better nutrient return to your grass. Whether you prioritize brand-specific fit or universal compatibility, there's an excellent 21 inch mulching lawn mower blade available to meet your needs and budget.
FAQs Regarding 21 inch mulching lawn mower blade
What is the primary benefit of a mulching blade?
The primary benefit is that it cuts grass clippings into very fine pieces, which are then returned to the lawn to act as a natural fertilizer, improving soil health.
How do I know if a 21 inch mulching lawn mower blade will fit my mower?
You need to check the blade's length, the size and shape of the center hole (e.g., star, round), and compare it with your mower's specifications or the original blade's part number.
Can I use a mulching blade for bagging grass?
While some mulching blades can be adapted for bagging, they are optimized for mulching. Using a dedicated bagging blade is usually more efficient for collecting grass clippings.
Are there any special maintenance requirements for mulching blades?
It's important to keep them sharp for optimal performance. Regularly inspect them for damage and clean off any grass or debris buildup.
What makes a 21 inch mulching lawn mower blade different from a standard blade?
Mulching blades have a more aggressive curve and often a serrated edge to help chop grass into finer pieces. Standard blades are typically flatter and designed for cutting and discharging or bagging.
How often should I replace my 21 inch mulching lawn mower blade?
This depends on usage and the toughness of your lawn. Generally, blades should be sharpened annually and replaced when they show significant wear, damage, or loss of sharpness.
Will a 21 inch mulching lawn mower blade work on a 20-inch deck?
No, it's best to use a blade that matches your deck size exactly. A 21-inch blade on a 20-inch deck can cause damage to the mower and won't cut effectively.
Where can I find the best deals on a 21 inch mulching lawn mower blade?
You can often find good deals at local hardware stores, online retailers like Amazon, or directly from mower parts suppliers, especially during seasonal sales.
