There are a few things to consider when purchasing a mulching blade for your lawn mower. The size of your lawn mower deck is the first thing to consider. The most common deck size for a lawn mower is 21 inches. Therefore, a 21-inch mulching blade is a good choice for most lawn mowers. The second thing to consider is the type of lawn mower you have. A gas-powered lawn mower will require a different blade than an electric lawn mower. Be sure to consult your lawn mower’s owner’s manual to find the correct blade for your lawn mower.

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Follow This Table For Choosing The Right on For The Best 21 Inch Mulching Blade

Review of The10 Best 21 Inch Mulching Blade Reviews with Features

Maxpower 331528B Mulching Blade for 21 Inch Cut MTD/Cub Cadet/Troy-Bilt Replaces 742-04100, 742-0741, 742-0741A, 942-0741, 942-0741A
  • Replaces OEM numbers 742-04100, 742-0741, 742-0741A, 942-0741 and 942-0741A
  • Also fits Craftsman CMXGZAM100067
  • Includes 1 mulching blade for many 21” cut MTD, Cub Cadet, Troy-Bilt and Craftsman mowers
  • Measures 21" in length and 2-1/4" in width
  • Bow tie center hole design
Maxpower 331981B 21-Inch Universal Gold Metal Mulching Lawn Mower Blad, black
  • Includes (1) 21 in. universal gold metal commercial mulching blade
  • Measures 21 in. L x 2-1/4 in. W with a 1 in. center hole diameter
  • Includes a cover washer and 6 reducing washers in the following sizes: 3/8 in., 7/16 in., 9/16 in., 1/2 in., 5/8 in., and 3/16 in
  • Fits MOST 21" cut mowers
  • Recommended for gas powered mowers - not battery powered or electric mowers
Oregon 598-631 Mulching Blade, Gator® G5™, 21"
  • Center hole: bow-tie
  • Tungsten carbide is “fused” into the blade – creating an ultra-hard layer at the cutting edge and increasing the time between sharpening.
  • X-Tended Cutting Length optimizes the cutting efficiency with each revolution.
  • Gator Mulcher provides cleaner, more efficient cutting performance that can eliminate the need to bag, saving time and hassle.
  • High-lift: The aggressive blade angle increases air flow to push debris up-and-out for superior bagging or side discharge.
MaxPower 331737B Mulching Blade for 21 in. Cut Craftsman, Husqvarna, Poulan Mowers Replaces OEM #'s 165833, 175052, 406712, 532175064
  • Replaces OEM numbers 165833, 175064, 189028, 406712, 176135, 159267, 008020, 175052, 406706, 406712X431, 531300765, 532 15 92-67, 532 17 50-52, 532159267, 532165833, 532175064, 532176135, 532189028, 532406712, 539111878 and PP23020
  • Also fits Craftsman CMXGZAM100129
  • Includes 1 mulching blade for many 21-in cut Craftsman, Husqvarna, and Poulan mowers
  • Measures 21-in L x 2-1/4-in W
  • 5/8-in center hole diameter
MAXPOWER 33121GWB Mulching 21 in. Cut Greenworks and Kobalt Replaces OEM #'s 29423 and 535386 Mower Blade, Black
  • Includes one mulching blade for many 21 in. cut Greenworks mowers
  • Replaces OEM #'s Greenworks 29423; Kobalt 535386
  • Fits models Greenworks 2502202; Kobalt KM210-06
  • Measures: 19.45 in. L and 2 in. W.
  • To ensure a proper fit, please check your owner's manual to verify the proper replacement part number and be sure that it matches one of the OEM numbers listed in this description.
EGO Power+ AB2101D 21-Inch Mulching Blade Set EGO Mowers LM2133/LM2130/LM2135SP/LM2130SP/LM2156SP/LM2150SP, Green
  • Compatible with EGO POWER+ 56-Volt Lithium-Ion Cordless Lawn Mowers LM2156SP, LM2150SP, LM2135SP, LM2130SP, LM2133. LM2130
  • Heavy duty mulching and bagging blade
  • Interchangeable lower blade on the Select Cut Multi-Blade System
  • All steel blade for excellent cutting performance
  • For use with EGO POWER+ 56-Volt Select Cut Mowers: LM2130, LM2133, LM2130P, LM2135SP, LM2150SP, and LM2156SP models
Maxpower 331387XB Commercial Mulching Blade for 21 in. Cut Toro, Exmark, Lawn Boy Mowers Replaces OEM #'s 108-0954-03, 116-4500, 1164500S, 1350413S
  • Replaces OEM #: 108-0954-03, 116-4500, 1164500S, 1350413S
  • Fits 21" cut Toro, Exmark and lawn Boy mowers
  • Size: 20-27/32" x 2-1/4" with a 7/16" center hole
  • Package contains 1 blade and Made in the USA
  • To ensure a proper fit, please check your owner's manual to verify the proper replacement blade number and be sure that it matches one of the OEM numbers listed in our description. We make our best effort to ensure all replacement OEM numbers are detailed in our product description.
USA Mower Blades 2 AYP340BP Mulching Blade Fits AYP Craftsman 0134149 24676 422719 424752 531005085 531307223 Length 21 in. Width 2-1/4 in. Thickness .134 in. Center Hole 5 PT ST 42 in. Deck
  • AYP: 134149, 24676, 422719, 424752, 531005085, 531307223, 532134149, 532422719, 532424752, 539110460
  • AYP: 594892701, 91724676, 917532422719, 917532424752, 917539110460, 917777134149, 954636867
  • Craftsman: 134149 Husqvarna: 532134149, 594892701, 777134149, 422719, 424752, 532134149, 532422719
  • Husqvarna: 532424752 MTD: 742-025040-637 Poulan: 531307223, 532134149, 594892701
  • 21 in. x 2-1/4 in. x 0.134 in. x 5 Point Star
8TEN LawnRAZOR Mulching Blade for MTD Cub Cadet Troy Bilt CC999ES SC500E 942-0741A 942-0741 742-0741 2 Pack
  • Replaces OEM Part Numbers: Craftsman SPM209370365, Cub Cadet 742-04276, 742-0741, 742-0741-0637, 942-0741, 942-0741A, MTD 742-0741, 742-0741-0637, 742-741, 942-0741, 942-0741A, 942-0741-X
  • Compatible with Models: Cub Cadet: CC439, CC949, CC989, CC997ES, PR521, S621SS, SC621, SC621E, SRC621, SRE621, SRS621, CC469, CC46M, CC46MZ, CC98M, CC997ES, S621, SR621, 5521, CC46ES, CC94M, CC98H,
  • Compatible with: MTD: RM105, RM110, RM120, RM210, RM220 Walk Behind Mowers with 21" Mower Decks
  • Compatible with: Troy Bilt: Tru-Cut 100, Tru-Cut 110, Tuff-Cut 200, Tuff-Cut 210, Tuff-Cut 220, Tuff-Cut 230, Pro-Cut 300, Pro-Cut 310, Pro-Cut 320, TB 105, TB 110, TB 115, TB 120, TB 125, TB 130 XP,
  • Blade Length: 20 3/4", Blade Width: 2 1/4", 11/16 Center Hole
MTD Genuine Parts (490-100-M067 Mulching Blades-for 21-Inch Lawn Mowers (1995 and After) Fits Various Troy-Bilt, MTD, Yard Machines, and Other Top Models, Natural
  • Fits 21" mowers, 1995 and after
  • For Troy-Bilt, MTD, Yard-Man, Yard Machines, Huskee and Bolens mowers
  • 3-in-1 blade: mulch, bag and side discharge
  • Star center hole
  • Replaces O.E. # 942-0741, 942-0741A, 742-0741 and 742-0741A

Important Aspects to Consider When Choosing 21 Inch Mulching Blade

When looking for the best 21 inch mulching blade, there are a few things to keep in mind. First, consider the make and model of your lawn mower. Some blades are designed specifically for certain models. Second, think about the size of your lawn. A larger blade may be necessary for a larger lawn. Finally, consider the type of grass and leaves you have on your lawn. Different blades are designed for different types of vegetation.

Frequently Asked Questions

1.What are the dimensions of a 21 inch mulching blade?
21 inch mulching blades typically have a length of 21 inches and a width of 2.5 inches.
2.How does a 21 inch mulching blade compare to other sizes?
21 inch mulching blades are larger than standard blades and offer more coverage for mulching.
3.What are the benefits of using a 21 inch mulching blade?
21 inch mulching blades offer increased coverage and protection when mulching, making them ideal for use in larger areas.


The best 21 inch mulching blade is the one that will give you the best results. There are many different blades on the market, so it is important to do your research before you buy. If you are looking for a blade that will give you a nice, even cut, then you should consider the Xcalibur X21. This blade is made of high quality materials and is designed to give you a precise, clean cut.

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