You know that feeling when you finish mowing, but instead of a clean look, your lawn is littered with clumps of grass? It’s frustrating, right? That’s usually a sign you need better lawn mower blades for mulching. They don’t just cut the grass; they chop it up fine enough to disappear into the turf. This gives your lawn free fertilizer, and keeps it looking neat.
But finding the right blades can be confusing. There are so many shapes and materials. You might think any blade will do, but that’s not really true. A bad set will leave your yard patchy or pull at the grass. We tested several popular options to save you the guesswork. I’ll show you which ones actually preform and which ones are a waste of your time. You deserve a great looking lawn without the headache. Let’s get started.
Product Comparison Table: 9 Best Lawn Mower Blades For Mulching
| Image | Why We Like This Product | Editor’s Rating | |
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Grasscool 532134149 422719 134149 Mulching Blades for Craftsman 42…
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9.9 |
Read Review |
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Grasscool GY20852 Mulching Blades with 7 Star Mounting Pattern…
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9.7 |
Read Review |
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Maxpower 331528B Mulching Blade for some 21 Inch Cut…
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9.4 |
Read Review |
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EGO POWER+ 21″ Mulching Blades for Electric Lawn Mowers…
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9.2 |
Read Review |
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MaxPower 331376XB Commercial Mulching Mower Blade for 22″ Toro…
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8.9 |
Read Review |
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MaxPower 331387XB Commercial Mulching Blade for 21 in. Cut…
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8.7 |
Read Review |
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Fismiuta 21 Inch Lawn Mower Blade – Mulching Blade…
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8.5 |
Read Review |
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MAXPRO Lawn Mower Mulching Blades Replaces 104-8697,104-8697-03P,104-8697-03,108-9764-03, 59534P, 59534,108-9764,108-9764-03P,131-4547-03,131-4546-03,108-9764-02P…
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8.2 |
Read Review |
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budrash 138971 Mower Blades for 42″ Lawn Tractor, 138498…
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8.0 |
Read Review |
Quick Review For Top 9 Lawn Mower Blades For Mulching
Grasscool 532134149 422719 134149 Mulching Blades for Craftsman 42 inch Deck Riding Lawn Mower Tractor with 5-Star Mounting Pattern LT1000 LT2000 Replace 424752 138971
The Grasscool 532134149 422719 134149 Mulching Blades for Craftsman 42 inch Deck Riding Lawn Mower Tractor with 5-Star Mounting Pattern LT1000 LT2000 Replace 424752 138971 is a replacement blade set designed for specific Craftsman riding mowers. Before you order, you need to check your current blade’s mounting pattern. Craftsman 42-inch decks use two different patterns. This blade has a 5-point star hole. If your old blade uses a 6-point star hole, this set won’t fit.
For a 6-point pattern, you’d need a different part number. Measure or look at your blade first to avoid the guesswork.
These blades are a direct replacement for Craftsman part numbers 422719, 134149, 532134149, 424752, and 138971. They fit the LT1000 and LT2000 series tractors, plus other Craftsman models with a 42-inch deck that use the 5-star pattern. The blade size is 21 inches long, 2-1/4 inches wide, and 9/64 inches thick. The center hole is a 5-point star shape.
The lift height is 1-1/16 inches, and these are mulching blades.
This is a 3-in-1 blade. It can mulch, bag, and side discharge at the same time. The curved design cuts grass multiple times into small pieces. Those pieces go back into the soil as nutrients, which helps your lawn grow healthy. The high-lift design also increases bagging capacity by about 50 percent.
Grasscool GY20852 Mulching Blades with 7 Star Mounting Pattern for John D-eere 48 inch Deck Mower E140 D140 D160 E160 E170 E150 LA145 LA140 48" Zero Turn Lawn Tractor Replace GX21784
The Grasscool GY20852 Mulching Blades with 7 Star Mounting Pattern for John Deere 48 inch Deck Mower is a direct replacement part designed for specific models. Before you order, the most important thing is to check your current blade’s mounting hole. John Deere 48-inch zero turn mowers use two different blade types. This blade has a 7 star shaped mounting pattern. If your existing blade has a circle shaped hole, you need a different part number (M145476 or GY20568).
Don’t skip this step—it saves you the trouble of returning the wrong item.
These blades are made to fit a wide range of John Deere lawn tractors with a 48-inch deck. They replace original part numbers GX21784, GY20852, AM137757, and AM141035. Compatible models include the E140, D140, D160, E160, E170, E150, LA145, LA140, and many others like the Z245, Z255, and Z355E zero turn mowers.
If you own a 145, 155C, D150, D155, L120, LA130, LA155, LA165, S140, S160, S170, X140, X165, X166, or X167, these will work too.
Let’s talk specs. Each blade is 17-1/8 inches long, 2-3/4 inches wide, and 5/32 inches thick. The center hole is shaped like a 7 point star, and the lift height is 1-3/16 inches. It’s a mulching blade, meaning it cuts grass clippings into smaller pieces that settle back into your lawn as natural fertilizer.
Maxpower 331528B Mulching Blade for some 21 Inch Cut MTD/Cub Cadet/Troy-Bilt Replaces 742-0741, 942-0741, CMXGZAM100067
The Maxpower 331528B Mulching Blade is a replacement blade designed for a wide range of 21 inch cut mowers from MTD, Cub Cadet, Troy-Bilt, and Craftsman. Before you buy, you need to match your current blade’s OEM number to make sure this is the right fit. It replaces a long list of OEM numbers, including 742-0741, 942-0741, and CMXGZAM100067, among others like 742-04276 and 942-0641. So, double check that number on your old blade first. This blade fits many specific models.
For Cub Cadet, it works with the CC Series like the CC 46M, CC 46ES, and CC 949, plus the SC Series such as the SC 100, SC 300 HW, and SC 700E. It also covers S, SR, SRC, and SRE models like the S 621 and SRC 621. Troy-Bilt models are well covered too, including the TB 105, TB 130 XP, TB 160, TB 230, TB 270 ES, TB 360, TB 380 XP, and TB 490 XP. It even fits the Tru-Cut 100 and 110, plus the Tuff Cut and Pro-Cut lines. There are also some MTD models like the 214 IP and PR 521 that are compatible.
The list is long, so it pays to verify your model against the full list provided. The blade itself has a bow tie center hole pattern. The outside hole diameter is 5/16 inches, and the center to center distance of those outside holes is 2.5 inches. That specific pattern is important for a secure mount on your mower deck. All MaxPower blades are sharpened during the manufacturing process. After sharpening, they get a powder coating to protect the edge during shipping and storage.
EGO POWER+ 21" Mulching Blades for Electric Lawn Mowers LM2133/LM2130/LM2135SP/LM2130SP/LM2156SP/LM2150SP, 2-Pack – AB2101D
The EGO POWER+ 21″ Mulching Blades for Electric Lawn Mowers, model AB2101D, is a 2-pack of replacement blades designed for the Select Cut Multi-Blade System. These are genuine EGO parts, so you can be confident they will fit and perform as intended. They are compatible with a range of EGO POWER+ 56-Volt cordless mowers, including the LM2156SP, LM2150SP, LM2135SP, LM2130SP, LM2133, and LM2130 models.
This blade is a heavy duty option that works for both mulching and bagging.
It is the interchangeable lower blade on the Select Cut system, meaning it swaps out quickly when you need to switch between cutting modes. The all steel construction gives you excellent cutting performance. It delivers a clean cut that helps promote lawn health by reducing stress on the grass blades. A clean cut also helps your lawn recover faster and look more uniform.
Because these are genuine EGO parts, you get the quality and performance that matches your mower.
They are built to last and provide reliable results season after season. The blades are made from durable steel, so they stay sharp longer and handle tough grass with ease. You should note that nuts and bolts are not included with this pack. You will need to reuse the hardware from your old blades or purchase new ones seperately.
If you own one of the listed EGO mowers, these blades are a direct replacement for the lower blade in the multi-blade system.
MaxPower 331376XB Commercial Mulching Mower Blade for 22" Toro Recyclers, Replaces OEM no. 108-9764-03, 131-4547-03, Black
The MaxPower 331376XB Commercial Mulching Mower Blade is designed for 22-inch Toro Recycler mowers. This blade replaces OEM numbers 104-8697-03, 108-9764-04, and 131-4547-03. It is a direct fit for many models from Toro that use a 22-inch cutting deck.
You get one blade in the package. The blade is built for commercial use. It measures 21-11/16 inches in length and 2-1/4 inches in width. The center hole has a 7/16 inch diameter. This sizing matches the original factory part.
You should check your mower’s deck to be sure this fits your specific model. Most Toro Recyclers with a 22 inch cut will accept this blade without any modifications.
The blade is manufactured to meet or exceed all OEM specifications. That means you can expect the same performance and durability as the original blade from Toro. MaxPower starts with a sharp edge. The blade is sharpened during the manufacturing process. After sharpening, it recieves a powder coating.
This coating is a protective layer. It keeps the blade safe from rust and damage during shipping and storage. The coating will come off during your first cut. Underneath is a precision sharpened blade ready for work.
This is a mulching blade. It is designed to cut grass clippings into fine pieces. Those fine pieces then fall back into the lawn. This helps return nutrients to the soil. The blade can handle thick grass. It also works well with leaves. The commercial grade steel is strong.
MaxPower 331387XB Commercial Mulching Blade for 21 in. Cut Toro, Exmark, Lawn Boy Mowers Replaces OEM #'s 108-0954-03, 116-4500, 133-8182-03
The MaxPower 331387XB Commercial Mulching Blade is made for 21 inch cut mowers from Toro, Exmark, and Lawn Boy. This blade replaces OEM numbers 108-0954-03, 116-4500, 133-8182-03, as well as 1164500S and 1350413S. Before you buy, you should check your owners manual to confirm that one of these numbers matches the part you need.
This blade measures 20-27/32 inches long by 2-1/4 inches wide. It has a 7/16 inch center hole.
The size is made to fit the specific deck and spindle setup on these popular commercial and residential mowers. If you have a Toro, Exmark, or Lawn Boy with a 21 inch cut, this is the correct profile for your machine.
Mulching blades work differently than standard blades. Instead of lifting and throwing grass out a chute, this blade is shaped to cut and recut clippings into fine particles.
The design pushes the grass down into the deck for multiple cuts before it falls back onto the lawn. This helps the clippings break down fast and return nutrients to the soil. You wont have to bag or rake as often, and your yard will look clean without clumps of grass sitting on top.
This blade is made in the USA. It comes as a single blade in the package. The steel is heat treated for strength and durability.
Fismiuta 21 Inch Lawn Mower Blade – Mulching Blade for Cub Cade MTD Craftsman Troy Bilt TB110 TB200 Some 21" Walk Behind Push Mower Replace Parts 942-0741A 742-0741A CMXGZAM100067
The Fismiuta 21 Inch Lawn Mower Blade is a mulching replacement blade designed for walk-behind push mowers from Cub Cadet, MTD, Craftsman, and Troy-Bilt. If you own a model like the TB110, TB200, or a similar 21-inch deck mower, this blade is built to handle your cutting needs.
This blade uses an upgraded 32mm lift height, which is a bit taller than the standard 28mm you might find on other blades. What that means for you is stronger airflow and suction.
It helps pull grass up for a cleaner cut and feeds clippings into the bag more efficiently. You will spend less time emptying the bag because the blade reduces clogging. It works as a three-in-one option: mulching, bagging, and side discharging. The mulching action shreds clippings finely so they decompose quickly and return nutrients to your lawn.
The blade is made from high-carbon steel, which gives it a good balance of toughness and sharpness.
It holds its edge better than softer steel, especially if you run into thick weeds or bumpy ground. There is a rust-resistant coating on the surface, but it will wear off during normal use. Thats fine because you can still sharpen the blade yourself to keep it cutting evenly. It is not a forever blade, but it should last through several seasons with proper care.
It replaces several OEM part numbers, including 742-0741A, 942-0741A, and CMXGZAM100067, among others.
MAXPRO Lawn Mower Mulching Blades Replaces 104-8697,104-8697-03P,104-8697-03,108-9764-03, 59534P, 59534,108-9764,108-9764-03P,131-4547-03,131-4546-03,108-9764-02P Compatible with 22" Toro Recyclers
The MAXPRO Lawn Mower Mulching Blade replaces OE numbers like 104-8697, 108-9764-03, and 131-4547-03. It is designed specifically for 22-inch Toro Recycler mowers, including models like the 20001, 20370, and 21485. It also fits select 22-inch Lawn Boy models like 10654. This is a direct replacement part, so you can swap out your old blade and get back to mowing without any modifications.
This blade is made from Maxpro carbon steel, which is known for being tough.
The material is forged to hold up against rocks, roots, and thick grass. It is built to last through many seasons of regular use. The carbon steel also helps maintain a sharp cutting edge for longer, so you don’t have to sharpen it as often. It is an ulta premium high quality mulching blade that can handle tough conditions without bending or breaking.
The dimensions are precise for a 22-inch deck. The blade is 21-11/16 inches long when measured diagonally from tip to tip.
It is 2-1/2 inches wide and 0.149 inches thick. The center hole is 7/16 of an inch, and the side holes are 3/8 of an inch. The center to center distance on the outside holes is 2-1/2 inches. The air lift measures 29/32 of an inch, and the cutting edge length is 5-3/64 inches. These measurements ensure a proper fit on your Toro Recycler.
The cutting performance is consistent and clean.
budrash 138971 Mower Blades for 42" Lawn Tractor, 138498 Gator Mulching Blades Compatible with Craftsman/Hus qvarna/Pou LAN Riding Mower, Replace 127843, 134149, 138971, 2 Pack
The BudRash 138971 mower blades for 42″ lawn tractor, specifically the 138498 gator mulching blades, are a solid replacement option if you own a compatible Craftsman, Husqvarna, or Poulan Pro riding mower. This 2-pack is designed to fit many 42-inch deck models, including popular units like the Craftsman LT1000, LT2000, Husqvarna LT125, YTH1842, and Poulan Pro PB19H42YT. You should always double-check your original part number before ordering, since compatibility can be tricky.
This set replaces a huge list of numbers, including 134149, 532134149, 777134149, 422719, 424752, and many more like 594892701 and 539110460. Its always a good idea to cross-reference with your current part.
These blades are built from heavy-duty metal with a black coating, which helps them last longer and resist rust. The toothed design features distinct, curvier edges compared to standard blades.
This shape lets them cut grass into finer pieces, which then fall back to the ground and act as natural fertilizer for your lawn. You won’t need to bag clippings as often, and your grass gets nutrients returned to it. The blades measure 21 inches long, 2-1/2 inches wide, and are about 0.197 inches thick. The center hole is a 5-point star, so make sure your mower deck uses this type of mount before you buy.
Lawn Mower Blades For Mulching Buying Guide
Mulching blades for lawn mowers chop clippings finely to return nutrients to soil. This means less work for you and a healthier lawn. Instead of bagging clippings, you let them decompose right where they fall. Sounds good, right? But not all mulching blades work teh same way. You need to pick the right ones for your mower and your grass.
Blade Design and Cutting Edge
Ever looked at a normal blade and a mulching blade side by side? They look different. Mulching blades have a curved shape and extra cutting surfaces. This design creates a vacuum inside the mower deck. Clippings get cut multiple times before they hit the ground. The result? Tiny particles that disappear into the lawn. You want a blade with a deep curve and sharp edges. Dull blades tear grass instead of cutting it cleanly.
Material and Durability
Steel matters. Cheap blades bend or chip on rocks and sticks. Look for heat-treated steel or boron steel. These hold an edge longer. But here’s the catch—harder steel is harder to sharpen. You’ll need a file or grinder. Some blades have a coating to prevent rust. That helps if you store your mower outside. How long do you want to go between sharpenings? That’s the real question.
Compatibility with Your Mower
Not every blade fits every mower. Check your owner’s manual for size and center hole shape. A wrong fit is dangerous. Measure your current blade length and width. Also, look at the lift—the angled part that pulls air. Some mowers need a high-lift blade for thick grass. Others work better with low-lift for less power draw. Dont guess. Measure twice, buy once.
Mulching vs. Bagging Performance
Mulching blades are great for frequent mowing. If you let grass grow tall, they struggle. Long clippings clump and suffocate the lawn. For those times, you might switch to bagging blades. Some people keep two sets—one for mulching and one for bagging. It’s a bit of work, but your grass will thank you. Think about your mowing habits before you choose.
Frequently Asked Questions About Lawn Mower Blades For Mulching
What makes a mulching blade different from a regular blade?
A mulching blade has a curved, wavy, or serrated design. It is not straight like a standard blade. This shape creates a vacuum inside the mower deck. The grass clippings get cut multiple times before thay fall. This turns them into fine pieces. Your lawn can absorb these tiny clippings quickly.
Can I use mulching blades with a regular mower deck?
Yes, you can. Most mowers accept mulching blades. But you may need to buy a special plug or kit. This blocks the side discharge. It keeps the clippings inside the deck longer. If your mower has a bag, you might need to remove it. Check your mower’s manual first. Not all decks work perfectly with mulching blades.
How often should I replace mulching blades?
Replace them once a year for best results. Or after every 25 hours of use. Sharp blades make better mulch. Dull blades tear the grass. This can hurt your lawn. If your clippings look ragged, it is time for a change. Also, replace bent or chipped blades immediatly.
Do mulching blades work for all grass types?
They work well for most cool-season grasses. Like fescue or bluegrass. Warm-season grasses can be trickier. Think Bermuda or zoysia. These grow thick and fast. You might need to mow more often. Wet or long grass is hard to mulch. Always mow when the grass is dry. Keep your lawn height moderate.
Is mulching better than bagging?
It depends on your goal. Mulching returns nutrients to the soil. It saves you time. No more bagging and hauling. It is great for the environment. But bagging is better if your grass is very tall or damp. Or if you have a disease problem. Mulching is the best choice for regular maitenance.
What size blade do I need?
Measure your old blade or check your mower’s manual. Blades come in common lengths like 18, 20, or 21 inches. The center hole size matters too. Usually it is round or star-shaped. Get the exact fit. A wrong size blade is dangrous. It can wobble or damage your mower.
Can I sharpen mulching blades myself?
Yes, you can. Use a file or a grinder. Follow the original angle of the blade. Do not overheat it. That softens the metal. Balance the blade after sharpening. An unbalanced blade causes vibration. This wears out your mower. If you are not sure, take it to a shop. A pro can do it fast.
What to Remember
Mulching with teh right blade is simpler than you think. You want a blade that cuts grass finely, so it breaks down fast. This puts nitrogen back into the soil, which feeds your lawn naturally. Check your mower deck to get the correct fit. A sharp blade makes a big difference, so sharpen yours a few times each season. Dull blades tear grass, leaving it brown and stressed. Your lawn will thank you for the extra care.
Choosing quality lawn mower blades for mulching is a smart move for any yard. They save you time on bagging and reduce waste. Your grass gets the food it needs, and you get a greener lawn without extra work. Focus on a blade with a curved design and plenty of cutting edges. This helps chop clippings into tiny bits that fall between the grass blades. With the right setup, you can recycle clippings into nutrients using these mulching blades for a healthier lawn ecosystem. Just keep an eye on blade sharpness and youll be set.