You want a lawn that looks like a green velvet carpet. But your mower is leaving behind clumps of grass and bare patches. That’s where lawn mower mulching blades come in. They cut grass into super fine particles that disappear into the turf. No bagging needed. No raking. Just free fertilizer dropped right where your grass needs it most.
Think about it. Those tiny clippings break down fast and feed your soil. They shade the ground too, keeping moisture in and weeds out. You get a healthier lawn with less effort. And honestly, who doesn’t love cutting down on yard work? These blades really do transform your mowing game.
Product Comparison Table: 9 Best Lawn Mower Mulching Blades
| 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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9.5 |
Read Review |
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Grasscool GY20852 Mulching Blades with 7 Star Mounting Pattern…
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9.3 |
Read Review |
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Grasscool 942-04308 942-04308A Mower Blades for Troy Bilt Bronco…
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9.0 |
Read Review |
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Maxpower 331528B Mulching Blade for some 21 Inch Cut…
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8.8 |
Read Review |
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EGO POWER+ 21″ Mulching Blades for Electric Lawn Mowers…
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8.6 |
Read Review |
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Grasscool 942-0741A Mower Blades for Troy Bilt 21 inch…
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8.3 |
Read Review |
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MaxPower 331376XB Commercial Mulching Mower Blade for 22″ Toro…
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8.1 |
Read Review |
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MaxPower 331387XB Commercial Mulching Blade for 21 in. Cut…
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7.8 |
Read Review |
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budrash 942-04308-X Mower Blades Fit for Cub Cad et…
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7.6 |
Read Review |
Quick Review For Top 9 Lawn Mower Mulching Blades
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 designed to fit a specific group of Craftsman mowers. Before you buy, the most important thing to know is your blade’s mounting pattern. Craftsman 42-inch decks use two different types. This blade uses a 5-point star hole. If your current blade has a 6-point star hole, this set wont work for you.
You would need to look for part numbers 942-0616A or 942-04308 instead. Checking this first saves you from the hassle of returns.
These blades replace a number of Craftsman OEM part numbers, including 422719, 134149, 532134149, 424752, and 138971. They are compatable with the Craftsman LT1000 and LT2000 series tractors, among others with a 42-inch deck. The specs are: 21 inches long, 2-1/4 inches wide, and 9/64 inches thick.
The center hole is a 5-point star shape, and the lift height is 1-1/16 inches. They are mulching blades, so they are meant to cut grass into fine clippings.
These blades are built for tough mowing tasks. They handle overgrown weeds and rugged terrain well. If you want a cleaner cut for a normal lawn, you can sharpen them. The cutting edges come painted to prevent rust and protect your hands during instalation.
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 D-eere 48 inch Deck Mower are designed for a specific fit. Before you buy, stop the guesswork. John D-eere 48 inch deck zero turn mowers use two different blade types. You need to identify your original blade’s mounting pattern first. This blade has a 7 Star Shaped mounting pattern.
If your current blade has a Circle Shaped pattern, you will need a different product, specifically MPN M145476 or GY20568.
These blades are a direct replacement for John D-eere part numbers GX21784, GY20852, AM137757, and AM141035. They fit a wide range of 48 inch deck models, including the 145, 155C, D140, D150, D155, D160, E140, E150, E160, E170, L120, LA130, LA140, LA145, LA155, LA165, S140, S160, S170, X140, X165, X166, X167, Z245, Z255, and Z355E lawn tractors.
Check your deck size carefully to make sure you have a 48 inch deck.
The blade specifications are as follows. Length is 17-1/8 inches (435mm). Width is 2-3/4 inches (70mm). Thickness is 5/32 inches (4mm). The center hole shape is a 7 point star. The lift height is 1-3/16 inches (30mm). This is a mulching blade. It works as a 3-in-1 blade, serving three purposes at the same time: mulching, bagging, and side discharging.
Grasscool 942-04308 942-04308A Mower Blades for Troy Bilt Bronco Pony Mustang 42 inch Mower with 6 Star Hole Cub Cadet XT1-42 ZT1-42 42'' Zero Turn Lawn Tractor Replace 942-04308A 942-04312 High Lift
The Grasscool 942-04308 942-04308A Mower Blades are designed to fit several popular 42 inch lawn tractors and zero-turn mowers. This is a high-lift blade, meaning it creates strong suction to lift grass before cutting and throw clippings out the discharge or into a bagger.
Before you order, you need to check one important detail. Many Troy-Bilt, Cub Cadet, and Craftsman models use two different blade types depending on the exact year or build.
This blade has a 6-point star center hole. If your current blade has a 5-point star or a different S-shaped hole, this set won’t fit. For a 5-point star hole, you would need a different part number like 138971 for Craftsman models. For an S-shaped hole on a Cub Cadet XT1 or ZT1, look for part 742-05177. Stop the guesswork and just look at your old blade before buying.
The specs on these blades are precise. Each blade is 21-3/16 inches long, 2-3/8 inches wide, and 5/32 inches thick.
The center hole is a 6-point star measuring 5/8 inch. They are high-lift blades with a lift of 1-1/8 inches. They replace a long list of OEM numbers including 942-04308, 942-04308A, 742-04308, 742-04312, and 490-110-M108.
Compatibility is broad. They work with many Troy-Bilt models like the Bronco, Pony, Mustang, and Super Bronco with a 42 inch deck. They fit Cub Cadet XT1 LT42, ZT1-42, RZT42, and RZT-SX models.
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 designed for many 21 inch cut mowers from MTD, Cub Cadet, Troy-Bilt, and Craftsman. This single blade replaces OEM numbers 742-0741, 942-0741, CMXGZAM100067, and several others listed in the compatibility guide. Before you buy, it is critical to match your current blade’s OEM number to ensure an exact fit. This blade is not a universal part, so checking your mower’s model and existing blade code will save you time and frustration.
This blade fits a wide range of specific models. For Cub Cadet, it works with the CC Series like CC 46M and CC 99M, the SC Series like SC 100 and SC 300, as well as S, SR, SRC, and SRE models including S 621 and SC 621. It also covers MTD models such as the 214 IP and PR 521. For Troy-Bilt, it fits the TB series from TB 105 up to TB 490 XP, plus the Tru-Cut 100 and 110, Tuff Cut 200 through 230, and Pro-Cut 300 to 320.
Always double-check your mower’s manual or the blade you are removing to confirm compatibility. The blade has a bow tie center hole pattern. The outside hole diameter is 5/16 inch, and the center-to-center measurement of those outside holes is 2.5 inches. This specific hole shape and spacing is common on many MTD and related brand mowers, but it may not fit machines with a different mounting system. If your mower has a star or oval center hole, this blade will not work.
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 LM2133/LM2130/LM2135SP/LM2130SP/LM2156SP/LM2150SP, 2-Pack – AB2101D is a replacement blade set made specifically for your EGO 56-volt Select Cut mower. If you own one of the compatible models—like the LM2156SP, LM2150SP, LM2135SP, LM2130SP, LM2133, or LM2130—these blades are a direct fit.
They work as the interchangeable lower blade in the Select Cut Multi-Blade System, so swapping them is straight forward.
These are heavy duty mulching and bagging blades. They are built from all steel, which gives you excellent cutting performance. The design focuses on delivering a clean cut, and thats important for lawn health. A clean cut means the grass heals faster and stays greener, rather then turning brown at the tips.
When you mulch, these blades chop clippings fine enough to break down quickly, returning nutrients to the soil. For bagging, they lift and cut effectively so your collection bag fills with smaller pieces.
Because these are genuine EGO parts, you get full compatability and quality. Aftermarket blades might not fit right or could reduce battery life, but these are engineered for your mower. They keep the cutting system balanced, which helps your mower run smoothly.
Grasscool 942-0741A Mower Blades for Troy Bilt 21 inch Deck Riding Tractor TB110 TB230 TB240 TB130 TB210 TB320 TB220 TB280ES 21" Walk Behind Push Mower Replace 742-0741A 942-0741 Mulching
The Grasscool 942-0741A Mower Blades are a direct replacement for a wide range of Troy-Bilt and Craftsman 21-inch walk-behind mowers, including the TB110, TB230, TB240, and many more models listed in the compatibility chart. This blade is designed to fit a bow tie spindle, so you need to double-check your center hole pattern before buying to avoid a mis-match.
It replaces several OEM numbers like 942-0741A, 742-0741, 742-04276, and others, which makes it a solid option for keeping your mower running without hunting for a specific brand part.
The blade measures exactly 21 inches in length, 2-1/4 inches wide, and 9/64 inches thick, with a lift of 1-1/8 inches. It is classified as a mulching blade, but it actualy serves three purposes: mulching, bagging, and side discharging.
The multiple curves on the blade cut and re-cut grass into very fine pieces, which then fall back into the soil as natural fertilizer. The high-lift design also boosts bagging capacity by about 50%, so you won’t be stopping to empty the bag as often.
One of the better features is how it handles tough conditions. If you have overgrown weeds or rough, uneven ground, this blade can chew through it without bogging down.
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 a direct replacement part for many 22-inch cut Toro Recycler mowers. This blade is designed to handle the job without any fuss. It replaces several OEM numbers, including 104-8697-03, 108-9764-04, and 131-4547-03, so you can be confident it fits your machine. Just check your mower’s deck size and existing blade pattern. It measures 21-11/16 inches in length and 2-1/4 inches in width, with a standard 7/16-inch center hole diameter.
These dimensions match the original specs for a secure install.
This is a commercial-grade blade, meaning it is built for heavy use and consistent performance. The blade is manufactured to meet or exceed all OEM specifications, so you are not sacrificing quality. One thing you will notice is the black powder coating. This coating is there to protect the blade during shipping and storage. Do not worry when you see it wear off.
It is designed to come off during the first cut, revealing a precision-sharpened edge underneath. That means you get a fresh, sharp blade right out of the box without any extra work.
The mulching action is what makes this blade effective. It is designed to cut grass clippings into fine pieces, which then fall back into the lawn as natural fertilizer. This reduces the need for bagging and helps your lawn retain moisture. For a 22-inch Toro Recycler, this blade is a straighforward swap.
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 a direct replacement for a specific range of mowers. It is designed to fit 21-inch cut Toro, Exmark, and Lawn Boy mowers. The blade measures 20-27/32 inches long and 2-1/4 inches wide, with a 7/16-inch center hole. This package contains one blade, and it is made in the USA.
You need to make sure this blade fits your mower. It replaces several OEM numbers: 108-0954-03, 116-4500, 1164500S, and 1350413S.
Before you buy, check your owner’s manual to find the correct replacement blade number for your machine. Then, confirm that number matches one of the OEM numbers listed here. We do our best to list all compatible OEM numbers, but you are the best person to verify the fit.
This blade works for mulching grass clippings. It cuts the grass and then recuts it into fine pieces. Those small pieces can then settle into your lawn as natural fertilizer.
The design helps to keep your yard looking clean without leaving clumps of clippings behind. It is a commercial-grade part, so it is built for regular use and durability.
Instalation is straightforward if you have basic mower maintence skills. Always disconnect the spark plug before working on your mower. Use the correct tools to remove the old blade and install the new one. Tighten it to the torque spec in your manual.
budrash 942-04308-X Mower Blades Fit for Cub Cad et Troy Bilt MTD Craftsman 42" Deck, 742-0616A Gator Mulching Blades Fit for 42" Riding Tractor Zero Turn Mower, 2 Pack
The budrash 942-04308-X mower blades are a 2 pack of gator mulching blades designed to fit a 42 inch deck. Before you buy, check your hole shape carefully. These use a 6 point star center hole. Also verify your part number and size. This set is a replacement for many numbers including 742-0616A, 942-04360, 742-04410, and 942-04126-X.
It is not a fit for every 42 inch deck out there, so double checking is worth your time.
These blades work with a range of riding tractors and zero turn mowers. Compatible models include Cub Cadet 1170, 1600, LT-1040, and LTX-1040. They also fit Craftsman models like the 604G, LT-1500, and T1000. Troy Bilt owners can use them on the Bronco and Bronco 42 Auto. Huskee models like the 606G and 673G are also compatible.
This list is not every model, so check the full description for more options.
The blades are made from heavy duty steel. They have a gator mulching design. The high lift pulls the grass up as you mow, giving you a clean and even cut. For better mulching, the teeth point toward the center of the blade. This reroutes airflow and forces clippings back onto the cutting edge. The result is smaller clippings that break down faster.
Lawn Mower Mulching Blades Buying Guide
Fine clippings require teh right blade. Choose mulching blades for your mower. These curved, often serrated blades cut grass into tiny pieces that fall back into the lawn. No bagging needed. But not all mulching blades work the same. You might wonder why your clumps look uneven or your mower struggles. The answer is often in the material, design, and fit. Let’s break down what matters most so you get a cleaner cut without the extra work.
Blade Material and Durability
Steel quality matters here. Most blades use hardened steel, but some add coatings to resist rust and wear. You want something that holds an edge for more than a few mows. A cheaper blade might bend on a hidden rock or dull fast. That means more sharpening—or buying replacements sooner. Look for boron steel or heat-treated options. They last longer and stay sharper through tough grass. Your lawn will thank you for it.
Cutting Design and Lift
Mulching blades have a different shape than standard ones. The curved design creates airflow that recuts clippings multiple times. Some blades have serrated edges, which help shred thicker grass. Others rely on a smooth edge with a steep curve. Which is better? It depends on your mower and grass type. Serrated blades work well for damp or tall grass, while smooth ones give a cleaner finish on short lawns. Test a few to see what suits your yard.
Compatibility and Fit
Not every blade fits every mower. Check your mower’s manual or measure the existing blade. Length, center hole size, and shape must match exactly. A loose blade wobbles, causing bad cuts and vibration. A tight fit ensures smooth operation. Some brands offer universal options, but stick with recommended sizes for safety. You don’t want a blade flying off mid-mow.
Cost vs. Value
Price varies widely. A budget blade might cost $10, but it could warp or dull quickly. A premium set runs $30 or more but lasts seasons. Think about your lawn size and how often you mow. For a small yard, a mid-range blade works fine. For larger areas, invest in quality. You’ll save time and frustration. Plus, a good blade keeps your grass healthier by returning nutrients evenly.
Frequently Asked Questions About Lawn Mower Mulching Blades
What exactly is a mulching blade?
A mulching blade is a special mower blade. It has a curved shape and extra cutting edges. Unlike regular blades, it cuts grass clippings into tiny pieces. These small pieces fall back onto your lawn. They decompose quickly and feed your grass naturally.
Will mulching blades work on my mower?
Most walk-behind mowers and riding mowers can use them. Check your owner’s manual first. You need to make sure teh blade fits your mower’s deck size. Also look for the correct center hole shape. Many blades are universal, but it’s always best to double-check.
Do I need a special mower for mulching?
Not really. Many mowers come with a mulching plug or kit. You can also buy aftermarket mulching blades. Just swap them out with your standard blades. Your mower might need a little more power to spin them, but most handle it fine.
How often should I replace mulching blades?
Replace them once a year or after about 25 hours of use. Dull blades tear grass instead of cutting it. This can lead to brown tips and disease. If you hit rocks or roots, check for damage right away. A bent blade should be replaced immediatly.
Can I use mulching blades in wet grass?
It’s not a good idea. Wet grass clumps up easily. Mulching blades work best on dry grass. Wet clippings can clog the deck and leave piles on your lawn. Wait until the grass is dry for the best results.
Do mulching blades save time?
Yes, thay do. You don’t have to bag or rake clippings. The fine clippings disappear into the lawn. This can cut your mowing time in half. Plus, you save money on bags and disposal.
Will mulching blades kill my lawn?
No, not at all. In fact, they help your lawn. The fine clippings return nutrients to the soil. Just don’t let the grass get too tall. Mow frequently and only cut off one-third of the blade height. This keeps everything healthy.
Before You Decide
This article has covered the essential information you need to make an informed decision. We’ve examined the key features and considerations that matter most when choosing the right product for your needs.
When thinking about lawn mower mulching blades, remember to focus on what works best for your specific situation. The ideal choice depends on your individual requirements and preferences. Take your time to evaluate all the options carefully.