A dull blade shreds grass instead of slicing it, leaving brown tips across your lawn within days. For owners of Murray walk-behinds and the wider family of 21-inch deck mowers, the right replacement blade changes how the whole yard looks after a single pass. The picks below cover the genuine 21-inch blade options, plus a few worth knowing for shoppers running Toro Recycler decks, EGO battery mowers, and Greenworks cordless machines in the same shed.
Your Options, Compared
Grasscool Recycler 22 inch Toro Mulching Blades
Grasscool 942-0741A Troy Bilt 21 inch Mulching Blade
Fourtry 2105200317A 21 inch Mower Blade
Grasscool 21 inch Deck Troy Bilt Mulching Blade
MTD Genuine Parts 490-100-M067 Mulching Blade
EGO POWER+ High-Lift Bagging Blade Set AB2102D
EGO POWER+ 21 inch Blade AB2100
EGO POWER+ 21 inch Mulching Blades AB2101D 2-Pack
Greenworks Replacement 21 inch Lawn Mower Blade
Taking A Closer Look At The Options
This Grasscool blade targets the Toro Recycler 22-inch deck specifically, replacing part numbers like 131-4547-03 and 108-9764-03. It covers a long list of Toro model numbers, which matters for owners who inherited an older machine and lost the paperwork years ago.
Unlike the smaller 21-inch deck blades further down this list, this one is built for a wider cutting path. For most suburban lots, the extra inch trims mowing time without asking for more engine power. Owners commonly report the factory edge holds up through a full season of weekly cuts before needing a touch-up.
What Earns Its Place
- Direct replacement for several Toro OEM part numbers, removing guesswork at install
- Mulching profile recuts clippings into fine fragments for healthier soil
- Broad compatibility across the 20001-20094 Toro model range
- Balanced steel construction helps the deck run smoother at full throttle
Points To Keep In Mind
- Only fits 22-inch Toro Recycler decks, not 21-inch walk-behinds
- Edge retention varies by grass type, with thick Bermuda wearing it faster
Quick Facts
Best Suited To
Toro Recycler owners running any of the listed 22-inch deck walk-behinds who want a clean OEM-style swap.
Reach For A Different Pick When
Murray and MTD owners with 21-inch decks should look at the Grasscool 942-0741A Troy Bilt blade below instead.
This is the Grasscool take on the 942-0741A specification, the OEM-style blade shared across Troy-Bilt, MTD, Craftsman, Cub Cadet, Bolens, White Outdoor, and yes, Murray walk-behinds with 21-inch decks. The cross-brand fit is its real selling point for shoppers who aren’t sure who actually made their mower.
It fits push and self-propelled models from 1995 onward, which covers nearly every used walk-behind still in service. You may find the listed OEM numbers (942-0741, 742-0741, 490-100-C089, and more) match what is stamped on your old blade, making this a near-guaranteed install.
Useful Touches
- One blade covers Murray, Troy-Bilt, MTD, Craftsman, and several sister brands
- Listed for both push and self-propelled walk-behinds
- Mulching profile reduces bagging trips on smaller lots
Trade Offs
- Confirm the OEM number on your existing blade before ordering, since fit is specific
- Edge sharpness out of the box is mixed; a quick file or bench stone helps on the first cut
Who It Suits Best
Murray, MTD, and Troy-Bilt owners with a 21-inch deck made from 1995 onward who want one blade across multiple mowers in the garage.
Look Elsewhere When
Owners of a 22-inch Toro Recycler should pick up the Grasscool Recycler blade reviewed above for a proper deck match.
For shoppers searching specifically for murray 21 lawn mower blades, this Fourtry blade is the most targeted option on the list. It cross-references 2105200317A, 84005221, and 2105200317, which are the part numbers Murray stamped on the 21-inch push mower and Blackmax series.
It also fits HyperTough 20-inch walk-behind models like the MNA152701, so anyone with a newer budget Murray or a HyperTough in the same shed is covered. The 21-inch length is the real Murray standard for the 2-in-1 gas push deck, and this blade is cut for that exact path.
Positive Points
- Direct fit for Murray MNA 152901, 152903, and 152905 push mowers
- Matches the OEM part number printed on the original blade
- Works as a HyperTough 20-inch replacement too
Honest Caveats
- Remove your old blade first and confirm the part number before ordering, since not every 21-inch Murray uses the same spec
- Single-pack only, so mulching-focused users cutting thick grass may want a spare on the shelf
Feature Snapshot
Whose Shelf It Belongs On
Murray push mower owners with a 21-inch deck looking for a part-number-exact replacement rather than a generic fit.
Swap It Out When
Anyone with a Troy-Bilt TB110 or TB130 in the same garage should grab the Grasscool 942-0741A blade instead, which is the standard for that family.
This is Grasscool’s other 942-0741A blade, the same OEM part number as Item 2 but sold as a multi-model Troy-Bilt fit. The model list runs deep, from the TB110 and TB130 up through TB240, TB320, and the TB360 self-propelled walk-behinds, which makes it useful when the deck is the same but the model number on the tag isn’t.
It uses the same family of stamped numbers (742-04100, 942-04276, 490-100-C089) as the cross-brand Grasscool blade, so for most shoppers the choice between Items 2 and 4 comes down to which OEM part list matches what is printed on the original blade.
What It Does Well
- Long Troy-Bilt model coverage including TB110, TB130, TB230, TB240, TB320
- Direct replacement for the OEM 742-0741A family of part numbers
- Designed to match the deck profile of a factory mulching 21-inch Troy-Bilt
Worth Noting
- Will not fit the Toro Recycler 22-inch deck from Item 1, despite the similar Grasscool branding
- Light surface coating can flash off during the first cut, so break it in on dry grass
Right Fit For
Troy-Bilt walk-behind owners with a 21-inch deck, particularly anyone running a TB110 or TB130 who wants a true mulching profile.
Where A Sibling Pick Shines
Anyone working on an older Murray push mower should grab the Fourtry 2105200317A blade above for a more direct part-number match.
For shoppers who prefer factory-original parts, this MTD Genuine Parts blade is the OEM-spec option for 21-inch walk-behinds built from 1995 onward. It carries part number 490-100-M067, the same number listed in the cross-reference lists on Items 2 and 4.
It is engineered for Troy-Bilt, MTD, Yard Machines, Huskee, and Bolens walk-behinds, which covers a long tail of machines that share the same MTD-built chassis. For a Murray owner whose mower was manufactured in the MTD family, this blade is the safe, factory-spec choice.
Positive Takeaways
- Factory-original MTD steel, matched to the OEM spec sheet
- Designed specifically to mulch clippings into fine particles
- Wide compatibility across MTD-family walk-behinds from 1995 onward
Some Limits To Know
- OEM branding typically costs more than the aftermarket Grasscool options above
- Sharpened edge is best preserved by storing the mower in a dry shed between cuts
Made For
Owners who want an authentic MTD replacement blade for any 21-inch walk-behind in the brand family built from 1995 on.
Not Your Match When
Anyone running a 22-inch Toro Recycler should skip this entirely and order the Grasscool Recycler blade from Item 1 instead.
The AB2102D is a two-blade set, not a single blade, designed for the EGO 21-inch battery platform that uses the LM2130 through LM2156SP chassis. The “high-lift” profile (blades with a steeper sail or angled rear edge) is engineered to push more air upward into the bag, which is the whole point of switching from the standard mulching blade.
The lower high-lift bagging blade is interchangeable with the mulching blade and the extended run time blade, so owners of the EGO multi-blade system can swap profiles without buying a full new deck. You may find the bag fills more completely on longer spring grass with this setup.
The Value In It
- Stronger suction for cleaner bagging on damp or thick grass
- Two-blade set replaces both upper and lower EGO blades in one purchase
- Interchangeable with the EGO mulching and extended run time lower blade
- Factory fit for LM2130, LM2133, LM2130SP, LM2135SP, LM2150SP, and LM2156SP
Less Ideal Details
- Only fits the EGO 21-inch platform, not gas walk-behinds like the Murray models in this list
- Higher lift means slightly more motor load, which can trim a few minutes off battery runtime
Perfect Match For
EGO POWER+ owners on the LM2130 to LM2156SP models who bag clippings regularly and want a cleaner pickup.
Skip It When
Murray gas mower owners with a 21-inch deck should grab the Fourtry 2105200317A blade from Item 3 instead.
The AB2100 is the original factory-sharpened EGO 21-inch blade for the LM2100, LM2101, LM2102SP, LM2100SP, and LM2142SP walk-behinds. EGO calls it a 3-in-1 blade, which simply means the same single blade supports mulching, bagging, and side discharging depending on how the mower is configured.
It is the lighter-duty option compared to the AB2101D and AB2102D sets reviewed here, since the LM2100 series uses a single-blade deck rather than the multi-blade system on the LM2130 and up. For most EGO owners on the older 21-inch cordless mowers, this is the right replacement.
Why It Works Well
- Single-blade simplicity for the LM2100, LM2101, LM2102SP, LM2100SP, and LM2142SP
- 3-in-1 design supports mulching, bagging, and side discharge in one blade
- Factory-sharpened edge out of the package for the first mow
Small Caveats
- Does not fit the LM2130 or LM2150SP series, which uses the multi-blade AB2101D and AB2102D systems
- Edge dulls faster on sandy or rough soil, so blade rotation matters in dry climates
Who Should Grab It
EGO POWER+ owners on the LM2100 family of 21-inch cordless mowers who want an OEM-spec replacement blade.
A Better Fit Elsewhere
Anyone running the newer LM2130 or LM2150SP mowers should pick the EGO mulching blade set (AB2101D) below for proper fit.
The AB2101D is the heavy-duty mulching lower blade for the EGO multi-blade system, sold as a two-pack so the deck runs a matched set. The lower mulching blade is interchangeable with the high-lift bagging lower blade and the extended run time lower blade, while the upper blade stays in place.
It is all steel and designed to turn clippings into fine fragments, which is exactly the mulching profile that reduces thatch and feeds the soil. The 2-pack matters because over time both blades wear and the deck gets noticeably rougher if you replace only one.
Noteworthy Benefits
- All-steel construction tuned for fine mulching on the LM2130 to LM2156SP mowers
- Two-pack keeps both blades in the deck matched for balanced cuts
- Interchangeable lower blade with the bagging and runtime blade sets
Things To Consider
- Only fits the EGO 21-inch multi-blade platform, not single-blade LM2100 mowers
- Mulching profile leaves a thin residue in the bag when you switch back to bagging mode
Essential Details
Who Will Love This
EGO POWER+ owners on the LM2130 to LM2156SP mowers who want a dedicated mulching setup and a matched pair of blades.
Where Another Pick Suits Better
Anyone on the older LM2100 platform should pick the AB2100 blade from Item 7, which is the OEM single-blade fit.
Greenworks makes this heat-treated steel replacement for its 21-inch cordless mowers, listed for the MO40L4413, MO40L03, and MO48L4422 models in the 40V and 80V families. The heat treatment (heating and cooling the steel in a controlled cycle to harden it) is the real upgrade over a generic aftermarket blade.
The compatible mower list runs across 80V walk-behinds like the 2550702, 2501202, and 2533902, plus the 40V MO40L4413 family. It is a genuine Greenworks part, not a third-party copy, so the fit should match the original blade without shimming.
A Strong Showing
- Heat-treated steel edge for longer sharpness between rotations
- Genuine Greenworks replacement, so the dimensions match the original
- Covers a long list of 40V and 80V 21-inch mowers
Practical Considerations
- Specific to Greenworks 21-inch platforms, so it won’t fit Murray gas decks
- Edge angle is set for factory deck height, so raising the cut too high reduces clipping quality
Built With In Mind
Greenworks 40V and 80V 21-inch walk-behind owners who want a genuine replacement blade for the MO40L4413 and MO48L4422 family.
Consider Something Else When
Murray gas mower owners with a 21-inch deck should grab the Fourtry 2105200317A blade from Item 3, which is built for that platform.
What To Look For In Replacement Blades For 21-Inch Decks
Match The OEM Part Number First
Pull the old blade and read the stamped number, then match it against the listing. For Murray 21-inch walk-behinds, that number is typically 2105200317A or 84005221, while MTD-family mowers use 942-0741A or 490-100-M067. The cross-reference list on any aftermarket listing is a sanity check, not a guarantee. Confirming the part number before ordering is the single biggest time saver.
Pick The Right Blade Profile
Mulching blades have a longer curved surface and more cutting edges to recut clippings into fine pieces, which feeds the soil but loads the engine slightly. High-lift blades have a steeper sail or angled rear edge that pulls clippings upward, ideal for bagging. Standard blades sit in the middle. Match the profile to how you actually mow, rather than buying the most aggressive option and hoping for the best.
Mind The Deck Width
A 21-inch blade belongs on a 21-inch deck, full stop. The Grasscool Item 1 is a 22-inch Toro Recycler blade and will not fit a 21-inch walk-behind. Running a slightly too-long blade throws off the deck balance, which is the kind of issue that shows up as uneven cuts and vibration over a season.
Consider Build Material And Sharpening
Heat-treated steel holds an edge longer than basic stamped steel, which matters in sandy soil or for anyone mowing weekly. Most blades can be sharpened with a bench grinder or file, but a heat-treated blade tolerates more sharpening cycles before thinning out. For most backyards, sharpening once a season is enough.
What Separates Premium From Basic In This Category
Pitfalls Shoppers Hit
The most common mistake is matching by brand alone. “Fits Murray” on a listing is a starting point, not a confirmation, because Murray walk-behinds came from different OEMs across model years. Always cross-check the OEM part number stamped on the old blade. Another slip-up is grabbing a 22-inch blade for a 21-inch deck, which clears the housing awkwardly and strains the spindle. Buying the cheapest available blade also tends to backfire, since thin stamped steel dulls after a few mows and throws off cut quality.
The Upgrade Payoff
Spending more for a heat-treated, all-steel blade, or a genuine OEM part from MTD or EGO, generally buys longer edge retention and better balance. For battery mowers like the EGO and Greenworks, OEM blades also tend to be precisely matched to the deck’s multi-blade geometry, so cut quality stays even. For Murray gas walk-behinds, aftermarket blades from Grasscool or Fourtry usually match OEM performance at a lower cost, and a heat-treated option is the smart upgrade if you mow a larger yard.
Frequently Asked Questions
How do I know which blade fits my Murray 21-inch mower?
Remove the old blade and look for a stamped part number on the steel. For most recent Murray push mowers, that number is 2105200317A or 84005221. Cross-check that number with the blade listing before ordering.
Are aftermarket blades as good as OEM?
For Murray and MTD-family walk-behinds, quality aftermarket blades from brands like Grasscool typically match OEM performance for daily residential use. Genuine OEM parts make more sense for EGO and Greenworks battery decks, where the multi-blade geometry is more sensitive.
How often should I replace or sharpen a mower blade?
A residential blade typically needs sharpening once per season, or after roughly 25 hours of mowing. Replace the blade when sharpening leaves it thinner than the original, when you see nicks along the cutting edge, or when the cut quality drops even after a fresh sharpening.
Can I use a mulching blade for bagging?
Yes, mulching blades work for bagging, though you may find the bag fills less completely than with a high-lift bagging blade. The EGO high-lift blade set on this list is the cleanest bagging option for the EGO 21-inch platform.
What is the difference between a 21-inch and 22-inch mower blade?
The numbers refer to the deck width, not the blade itself. A 22-inch deck needs a longer blade to cover the full cutting path. Using a 22-inch blade on a 21-inch deck can cause clearance issues with the housing and throw off balance.
Final Verdict
The right blade comes down to the part number stamped on your old one, the deck width, and how you prefer to mow. Murray push mower owners get the cleanest fit with the Fourtry 2105200317A blade, while anyone with a 21-inch MTD-family walk-behind should look at the Grasscool 942-0741A options. EGO and Greenworks shoppers stay inside their own brand’s OEM blades for the best cut quality. Whichever way you go, a fresh edge on a correctly matched blade is the cheapest way to make a lawn look better.