Quick verdict
For most 21 inch walk behind mowers, the MaxPower 331528B USA made mulching blade is the pick I would start with. It fits many 21 inch MTD, Cub Cadet, Troy-Bilt, and Craftsman decks, uses a bow tie center hole, and ships factory sharpened so it chops clippings fine right out of the box.
Maxpower 331528B USA MADE 21" Cut Mulching Blade
This MaxPower mulching blade leads because it targets the most common walk behind size, fitting many 21 inch MTD, Cub Cadet, Troy-Bilt, and Craftsman mowers. It uses a bow tie center hole pattern and is designed to chop clippings finely for mulching rather than bagging. Like the rest of the MaxPower line it arrives factory sharpened under a powder coat that wears off on the first cut.
Check price on Amazon âThe best mulching blades for finely chopped clippings that feed your lawn. I compared deck fit, center holes, and blade design across walk behind and rider
Why you should trust this guide
Mulching blades live or die on two things, fitment and blade design, so I built this guide around both. I read the deck compatibility lists, center hole shapes, and blade dimensions for each set, then looked at how each blade is shaped to recut clippings into fine mulch rather than simply throwing them into a bag. A blade that fits your deck but is a standard high lift design will not mulch well, and a great mulching blade that has the wrong center hole will not mount at all.
I have tried to be honest about the fact that mulching performance also depends on your habits, not just the blade. Mulching works best when you cut little and often on dry grass, and even the best blade struggles with a tall, wet lawn. My recommendations are grouped by deck size so you can start with the blades that actually fit your mower.
How we evaluated
The criteria I weighed were deck size compatibility, center hole shape and size, blade dimensions, and how the blade is designed to mulch. Center hole and deck width are the deciding specs, so I gave them the most weight, and I noted where a listing warns that a deck uses more than one mounting pattern, since that is where most fitment mistakes happen. I also looked for the toothed or high curve edges that define a true mulching blade.
Beyond fit, I considered build quality and finish. The MaxPower commercial sets state they meet or exceed OEM specifications and arrive factory sharpened, while the ZALANA and Grasscool toothed blades use heavy duty metal aimed at recutting clippings and handling rough growth. I did not physically install or run these blades, so every detail here comes from the published specifications and stated compatibility.
What to look for
- Deck size: match the blade set to your exact deck width, from 21 up to 54 inches.
- Center hole: confirm the shape, whether bow tie, 5 point star, 6 point star, or round, and the diameter.
- Mulching design: look for the curved or toothed edges that recut clippings into fine mulch.
- Mounting pattern warnings: some decks use two patterns, so heed the listing’s fitment notes.
- Blade dimensions: length and width must match so the blade clears the deck and cuts fully.
- Set versus single: buy a matched set for a multi spindle rider so the deck stays balanced.
- Sharpness: factory sharpened blades mulch better and save you a sharpening step.
How we test
We base every pick on real-world use, published manufacturer specifications and verified owner feedback. We compare the tools on the things that actually matter for your lawn, power, runtime, cut quality, build and value, and we never accept payment for a ranking. When we have not used a specific model first-hand, we say so.
The picks at a glance
| Tool | Best for | Score | |
|---|---|---|---|
| Maxpower 331528B USA MADE 21" Cut Mulching Blade | Best Overall | Check price | |
| MaxPower 561738XB USA MADE 3 Blade Commercial Mulching Set | Best Value | Check price | |
| Maxpower 561735XB 3 Blade Commercial Mulching Set | Best Premium | Check price | |
| ZALANA 110 | Best Budget | Check price | |
| Grasscool 942 | Also Great | Check price |
The picks, reviewed
Maxpower 331528B USA MADE 21" Cut Mulching Blade
This MaxPower mulching blade leads because it targets the most common walk behind size, fitting many 21 inch MTD, Cub Cadet, Troy-Bilt, and Craftsman mowers. It uses a bow tie center hole pattern and is designed to chop clippings finely for mulching rather than bagging. Like the rest of the MaxPower line it arrives factory sharpened under a powder coat that wears off on the first cut.
Reasons to buy
- Includes 1 mulching blade for many 21 in. cut MTD, Cub Cadet, Troy-Bilt, and Craftsman mow
- Replaces OEM #'s: 742-0741, 742-0741A ,742-04276, 742-04276S, 942-0641, 942-0741, 942-0741
- Fits Cub Cadet Models: CC Series- CC 46M, CC 46MZ, CC 46ES, CC 439, CC 469, CC 949, CC 94M
- Fits Troy-Bilt Models: TB 105, TB 110, TB 115, TB 120, TB 125, TB 130, TB 130 XP, TB 140,
- CENTER HOLE: Bow Tie Center Hole Pattern. Diameter of Outside Hole is 5/16". Center to Cen
Reasons to avoid
- The bow tie center hole must match your exact mower, so check the OEM number first
- As a single blade it only suits single blade 21 inch decks
MaxPower 561738XB USA MADE 3 Blade Commercial Mulching Set
The MaxPower 561738XB is the value set for larger riders, with three commercial mulching blades for 54 inch Craftsman, Husqvarna, and Poulan decks. Each blade measures 18-1/2 inches long by 3 inches wide with a 5 point star center hole. The commercial grade build and matched three blade set make it a practical upgrade for a wide 54 inch deck.
Reasons to buy
- Includes 3 commercial mulching blades for 54 in. Craftsman, Husqvarna, and Poulan mowers
- Replace OEM #'s 187254, 187255, 187256, 594892901, 532187255, 532187256
- Each blade measures 18-1/2 in. L and 3 in. W
- 5 point star center hole
- Manufactured to meet or exceed all OEM specifications
Reasons to avoid
- The 5 point star hole is specific, so confirm it matches your spindles
- A 54 inch commercial set is more blade than a small deck needs
Maxpower 561735XB 3 Blade Commercial Mulching Set
The MaxPower 561735XB is the premium pick for 48 inch decks, again with three commercial mulching blades for Craftsman, Husqvarna, and Poulan mowers. Each measures 16-5/8 inches long by 2-1/2 inches wide with a 5 point star center hole. It is essentially the 48 inch sibling of the value set, built to the same commercial standard as a matched trio.
Reasons to buy
- Includes 3 commercial mulching blades for a 48" cut Craftsman, Husqvarna, Poulan mowers
- Replaces OEM #'s 173921, 532173921
- Each blade measures 16-5/8" L and 2-1/2" W
- 5 point star center hole
- Manufactured to meet or exceed all OEM specifications
Reasons to avoid
- It only fits 48 inch decks with the 5 point star mount
- Buying a full commercial set is overkill for occasional homeowner use
ZALANA 110
The ZALANA 110 is the budget choice, a toothed mulching blade for 50 inch Toro TimeCutter Z and MX series mowers. It has a round 5/8 inch center hole and measures 17-1/2 inches long, and the toothed edge is designed to recut clippings for finer mulch. It carries a 6 month warranty and heavy duty metal construction for the price.
Reasons to buy
- ăREPLACES OEMăToro 110-6837-03, 112-9759-03, 112-9759, 115-5059-03, 115-5059
- ăFITS MODELSă50" Toro TimeCutter Z Series: Z5000, Z5020, Z5030, Z5035 Z5060. Compatible wi
- ăFITS MODELSă50" Toro TimeCutter MX5060, MX5025, MX3450, MX5075, MX5050, MX5000, SS5000, S
- ăAFTER-SALES SERVICEă------ We provide 6 months warranty service, if you have any question
- ăHIGH QUALITYăThe Toothed Mulching Blade is made of heavy duty metal, ensuring its durabil
Reasons to avoid
- It is specific to 50 inch Toro TimeCutter models, so check your model number
- The 6 month warranty is shorter than some competing blades
Grasscool 942
The Grasscool 942 set rounds out the lineup for 42 inch Cub Cadet and Troy-Bilt riders. These toothed mulching blades measure 21-1/4 inches long with a 6 point star center hole, and the listing is clear that the deck uses two mounting patterns, so it warns you to confirm the 6 point star fit. The toothed design also handles overgrown weeds and rough terrain.
Reasons to buy
- Blades Mounting Pattern Compatibility Notice: CUB CADET ZT1-42 XT1-42 XT2-42 RZT42 Mower U
- Mulching Blades Replace MPN 942-04308-X, 942-04308 ,942-04126, 742-04126, 942-04126-x, Win
- 942-04308-X 942-04308 Mulching Blades For Cub Cade 42 Inch Riding Tractor Zero Turn Mower,
- 942-04308-X 942-04308 Mulching Blades For Troy Bilt TB42, TB42 7-Speed, TB42 Hydro, Pony 4
- BLADE SPECIFICATION: Length: 21-1/4"(540mm), Width: 2-3/8"(60mm), Thickness: 5/32"(4mm), C
Reasons to avoid
- The 42 inch decks it fits use two mounting patterns, making a fitment mistake easy
- It is aimed at homeowner riders rather than heavy commercial duty
What to look for
Deck size
Mulching blades are sold by deck width, so match a 21, 42, 48, 50, or 54 inch set to your mower.
Center hole
Confirm the hole shape and diameter, since bow tie, star, and round mounts are not interchangeable.
Mulching edge
A true mulching blade has a curved or toothed edge that recuts clippings finer than a standard blade.
Mounting pattern
Some 42 inch decks use two mounting patterns, so follow the listing's fitment warnings closely.
Matched set
Replace all blades on a multi spindle rider at once so the deck stays balanced and cuts evenly.
Mowing habits
Mulching works best on dry grass cut little and often, so pair the blade with good timing.
Our verdict
For most 21 inch walk behind mowers, the MaxPower 331528B USA made mulching blade is the pick I would start with. It fits many 21 inch MTD, Cub Cadet, Troy-Bilt, and Craftsman decks, uses a bow tie center hole, and ships factory sharpened so it chops clippings fine right out of the box.
FAQs
A mulching blade has a more curved or toothed cutting edge that keeps clippings under the deck and recuts them into fine pieces, so they break down on the lawn instead of being bagged.
It depends on the deck width and center hole. Match your deck size, then confirm the hole shape, such as bow tie or star, against your current blade before ordering.
On many mowers, yes. A mulching plug or kit closes the discharge chute so the blade can keep clippings circulating and cut them finer.
Not well. Mulching is most effective on dry grass cut little and often, since tall or wet clumps can clog the deck and leave clumps on the lawn.
On a multi spindle riding deck, yes. Installing a full matched set keeps the deck balanced and avoids an uneven cut or vibration.