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Maxpower 331981B 21-Inch Universal Gold Metal Mulching Lawn Mower Blade

4.3 4.3 out of 5 stars 2,029 ratings
$25.99
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Purchase options and add-ons

Brand Maxpower
Color Black and Brown
Product Dimensions 1.75"D x 6.13"W x 25.13"H
Product Care Instructions Wipe Clean
Unit Count 1.0 Count
Material
Metal
Item Weight
2 Pounds
Frame Material
Alloy Steel
Seat Material Type
Metal

About this item

  • 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
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Maxpower 331981B 21-Inch Universal Gold Metal Mulching Lawn Mower Blade
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From the manufacturer

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For All Your Outdoor Power Equipment Needs

MaxPower has ALL of your small engine replacement parts. Blades, filters, trimmer line, belts, chainsaw parts, engine parts, wheels, tubes and MORE!!

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USA Manufacturer

We proudly manufacture the following items at our facilities in Glennville, GA and Phoenix, AZ:

  • Mower Blades
  • Edger Blades
  • Trimmer Line
  • Foam and cartridge style air filters

Manufacturing Processes

Heat Treat Process for Blades

Heat Treat Process for Mower Blades

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Foam Filter Manufacturing

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Cartridge Filter Line

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Trimmer Line Extrusion

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Maxpower 331981B 21-Inch Universal Gold Metal Mulching Lawn Mower Blade

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Product Description

MaxPower's 331981S 21" Universal Gold Metal Commercial Mulching Blade includes a cover washer and 6 reducing washers in the following sizes: 3/8", 7/16", 9/16", 1/2", 5/8", and 13/16". This blade measures 21" long by 2-1/2" wide with a 1” center hole. Commercial mulching blades feature greater cutting surface for increased mulching performance, sharpened cutting teeth for a precision cut, and a centrifugal air lift design for uniform chopping distribution. MaxPower blades are proudly manufactured in the USA to meet or exceed OEM specifications.

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If ingested, seek medical help immediately.

Customer reviews

4.3 out of 5 stars
2,029 global ratings

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Customers say

Customers find that the blade cuts cleanly and mulches well. They find it easy to install and appreciate its build quality. However, some customers dislike how the blade cuts. There are mixed opinions on fit and value for money.

AI-generated from the text of customer reviews

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Blade qualityWorks wellMulching abilityEase of installationBuild qualityFitValue for moneyBlade cut
273 customers mention "Blade quality"207 positive66 negative

Customers appreciate the blade's quality. They mention it does a good job of cutting thick Bermuda grass lawns, has a straight cutting edge, and is easy to sharpen. The blade cuts cleanly and mulches grass clippings.

"...It does a good job of cutting my thick bermuda grass lawn...." Read more

"...This Maxpower blade has a straight cutting edge, very easy to sharpen, and provides lift and mulching via the "gator teeth" at the back edge- a..." Read more

"...To my surprise it cut so well that I ended up cutting all but a small section of the yard before it ran out of gas...." Read more

"...means more time to drink a favorite potage.... So the Maxpower is a good blade: good value, good performance for what they say it will do, and a..." Read more

185 customers mention "Works well"164 positive21 negative

Customers like the blade. They say it works well, provides good mulching power, and is an excellent upgrade from the stock mower blade. The gator teeth at the end provide lift and mulching. Customers find it easy to sharpen and consider it worth the money.

"...conclusion is that this MAXPOWER design works as well or better than the best mulcher I ever had, which was a 1970s Jacobson (sic?)..." Read more

"...blade has a straight cutting edge, very easy to sharpen, and provides lift and mulching via the "gator teeth" at the back edge- a better design..." Read more

"...Well worth the money! Knowing what I know now, I may actually enjoy the winter season this year" Read more

"...Well worth the money!" Read more

108 customers mention "Mulching ability"86 positive22 negative

Customers appreciate the mulching ability of the blade. It lifts the grass well and gives a fine mulch. They say it makes mowing less tedious. The blade has no issues mulching through small tree branches and does a great job of clearing the path.

"...I was especially impressed with the lifting power of the blade: it virtually erased the wheel tracks from the prior pass, even when the second pass..." Read more

"...the lawn there are no lines of cut grass left behind and virtually no grass thrown out when I turn around at the end of each pass...." Read more

"...mulch as well or better than the stock blade, and did not spit out large clots of mulched grass as the old blade did- and I think the lack of..." Read more

"...It did a great job of clearing the path (partly by just blowing the leaves far away from the mower as it passed over), but where it really shines is..." Read more

98 customers mention "Ease of installation"83 positive15 negative

Customers find the blades easy to install using the reducing adapter washers. They say it makes mowing easier and keeps the blade sharp.

"...Installation was simple and my mower runs with no noticeable additional strain...." Read more

"...The Maxpower Universal installed just fine to this mower, and on first use, it not only didn't bog down, but actually cleaned out the deck of old..." Read more

"...blade has more than impressed me and as a disabled veteran it made mowing so easy it was like taking a walk around the yard...." Read more

"...I gave it a couple of quick passes with an angle grinder and it sharpened up nicely and held the edge well after the first mowing...." Read more

67 customers mention "Build quality"60 positive7 negative

Customers appreciate the blade's build quality. They find it well-made, thick, and heavy. The blade is made in the U.S. and mulches grass quickly.

"...This blade is a thick bar of steel not a light weight stamped one with unnecessary curves and bends. Trust me, you'll love it...." Read more

"...It’s a little on the pricey side, but does appear to be a quality blade...." Read more

"Sturdy, well made in the USA, has all the extra washers to make it fit! Only complaint is the confusion on the side of the blade that is stamped...." Read more

"...of metal on both sides to maintain proper balance. It's a quality blade but you should check to see if you have enough clearance...." Read more

85 customers mention "Fit"48 positive37 negative

Customers have different views on the fit. Some say it fits their mowers well without an adapter, while others mention it may not fit if the deck is 21 inches. The clippings are smaller than the stock blade.

"Used a couple times but so far is performing good and fit well" Read more

"...to keep the center adapter washer in place- but that large washer was not large enough (inside diameter), to fit over my TB center bolt- I will..." Read more

"...Fit my mower with a Honda motor perfect. No adapter needed." Read more

"...The clippings are much smaller than the stock blade's. I will edit my review after I mow at the lower setting." Read more

52 customers mention "Value for money"35 positive17 negative

Customers have different views on the blade's value for money. Some find it a good blade for the price, saying it's fun for a little money. Others say it arrived dull and needed sharpening.

"...time to drink a favorite potage.... So the Maxpower is a good blade: good value, good performance for what they say it will do, and a larger cutting..." Read more

"...Overall, it's a good blade for the money and I'd recommend it to anyone looking for more cutting power." Read more

"...reason I went with these blades was because the blades Toro had were very cheap and one small little rock to a chunk out of the blade...." Read more

"Easily installed prices are good products are so far so good" Read more

75 customers mention "Blade cut"20 positive55 negative

Customers are dissatisfied with the blade cut. They mention it's inconsistent, leaves leaves uncut in spots, and doesn't cut even with the mower deck. Some say it cuts leaves into finer pieces but leaves distinctive lines where it's not effective.

"...Like most new blades today, the cutting edges were tapered but flat edged and carried a layer of paint. Sharpening/balancing is a must...." Read more

"...It cuts good but left many pieces uncut and it had a hard time cutting dandelions...." Read more

"...Now when I cut the lawn there are no lines of cut grass left behind and virtually no grass thrown out when I turn around at the end of each pass...." Read more

"...These blades chopped the leaves into finer pieces. It wasn't a huge difference, but it was significant...." Read more

Mulching leaves great
5 out of 5 stars
Mulching leaves great
Bought this after reading reviews. I have 2 Maple trees in front of my house that drop alot of big leaves. This blade has made clean up the easiest and fastest since I bought my house 10 years ago. I did sharpen the blade a bit more with an angle grinder before installing. In the pic jr is making a 2nd pass over the thicker material that was multched. Before the 1st pass the leaves were ankle deep and grass was not visible. Would buy this again in a second.
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Top reviews from the United States

  • Augenblick
    5.0 out of 5 stars EFFECTIVE DESIGN and PERFORMANCE. UNMATCHED?
    Reviewed in the United States on May 1, 2014
    Pattern Name: MowerVerified Purchase
    After having poor (and frustrating) experiences with an OEM (MTD/Yardman) blade and a split tipped replacement (MAXIEDGE at Ace Hdwre) I was a little anxious about this MAXPOWER design. Just finished my first mow of the season and have only good things to report. My grass ranged between 3-7" high and I set the height to leave about 3". The blade handled the highest growth easily and evenly, leaving no windrows and only a few "clumps" here and there, particularly noticeable at turns. No need to make a second (or third!) pass, although for you perfectionists a second run under these conditions might prove irresistable. But then, if you are a neat-freak about your lawn, you would have never let it reach 7 inches. I was especially impressed with the lifting power of the blade: it virtually erased the wheel tracks from the prior pass, even when the second pass was in the same direction. If the second pass was in the opposite direction the pressed-down blades of grass were lifted erect and indistinguishable from the blades in the main swath. Of course, each pass leaves its own tracks, so tracks cannot be completely eliminated. My point here is only the remarkable suction/vacuum created by this blade. I forgot to mention, and I need to emphasize: all this was in MULCHING MODE. I did not test the bagging or side discharge functions. My general conclusion is that this MAXPOWER design works as well or better than the best mulcher I ever had, which was a 1970s Jacobson (sic?) two-blade dedicated mulcher mower. The only negative is the dull condition of the blade as shipped. Like most new blades today, the cutting edges were tapered but flat edged and carried a layer of paint. Sharpening/balancing is a must. And I assume that the depth of the tempering of the cutting edges is fairly narrow and on the soft side. No proof, just based on my encounters with newer blades and the degree of resistence this blade gave to the file. For comparison, see my Amazon review of the split-tipped blade design also known as MAXIEDGE (Ace Hdwre).
    8 people found this helpful
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  • AK Donovan
    5.0 out of 5 stars Excellent upgrade
    Reviewed in the United States on July 4, 2022
    Pattern Name: MowerVerified Purchase
    I have a budget Troy-Bilt TB110 21” push mower with a Briggs 550EX 140cc 3.75hp engine. I bought it new at the beginning of this season. It does a good job of cutting my thick bermuda grass lawn. My only complaints were the line of cut grass it left on the right side with each pass and the clumps of cut grass at each turnaround when used in the mulching configuration.

    I did some research and settled on this replacement blade. As suggested by other reviewers, I used my angle grinder to remove the thick gold paint touch up the cutting edges. Installation was simple and my mower runs with no noticeable additional strain.

    Now when I cut the lawn there are no lines of cut grass left behind and virtually no grass thrown out when I turn around at the end of each pass. You can tell that the blade is moving a lot more air than the stock blade by the “sweeping” action on the driveway and sidewalks. I have not tried it in the bagging configuration yet, but I can tell that this blade will do a much better job of blowing the clippings deep into the bag.

    Overall, a very worthy upgrade to my cheap little mower.
    3 people found this helpful
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  • Joel Aycock
    4.0 out of 5 stars => Pretty happy so far
    Reviewed in the United States on June 11, 2013
    Pattern Name: MowerVerified Purchase
    Pretty pleased with this blade so far.

    I've been looking for a "Gator" style blade, for my mower:

    21" Troy-Bilt mulching mower model #34345
    with 21" blade p/n #1764381
    (1/2" center hole, 2 1/2" bolt hole spacing, 3/8" outer bolts)

    No one makes a "gator blade" built specifically for this mower.

    I received this Maxpower 331981S 21-Inch Universal Gold Metal Mulching Lawn Mower Blade today, and fitted it to my mower successfully. Tried it out, and it seems to work as well or better than the stock Troy-Bilt blade #1764381. I'm happy.

    The stock TB blade would load up with grass clippings and leave a lot of cuttings stuck to the inside of the deck, and bog down the mower- especially when the grass was tall or slightly damp. I had to leave the "grass chute" opening uncovered, so that some of the mulched clippings would be thrown out (in a clotted messy chunk), to avoid totally stalling the mower in these cases.

    The Maxpower Universal installed just fine to this mower, and on first use, it not only didn't bog down, but actually cleaned out the deck of old stuck-on grass clippings from the stock TB blade. It seemed to cut and mulch as well or better than the stock blade, and did not spit out large clots of mulched grass as the old blade did- and I think the lack of clipping build up under the deck, and the cleaning action, is a very good sign.

    One of the reasons I wanted to try a "gator style" blade was that the stock Troy-Bilt mulching blade has a wavy and convoluted cutting edge, designed to lift and recirculate the cut grass for mulching. That works OK, but it means that the blade is very difficult to sharpen with a grinding wheel- the cutting edge is not straight, but waves up and down over it's length. This Maxpower blade has a straight cutting edge, very easy to sharpen, and provides lift and mulching via the "gator teeth" at the back edge- a better design IMHO.

    There are some negatives worth mentioning (below), but overall I am very happy with this purchase.

    Negatives:

    1) The retail packaging is awful- there is a very heavy shrink wrap that requires a very sharp, thin, strong blade to remove. BE CAREFUL! Cut *AWAY* from yourself at all times! I didn't lose any fingers unpacking this blade, but I can imagine folks doing serious damage to themselves, cutting the shrink wrap off. Bad packaging design.

    2) The cutting edge of the blade is pretty dull as shipped- needs a quick file or grinder touch up before use.

    3) There is a large flat washer provided, meant to be used to keep the center adapter washer in place- but that large washer was not large enough (inside diameter), to fit over my TB center bolt- I will probably need to buy another washer to serve that purpose.

    4) There are no washers provided for the two outer slot mounting bolts- since these bolts are fitted into slots on the Maxpower, rather than 3/8" holes as on the original TB blade, I think they probably need additional washers for mechanical security. I'll be purchasing extra washers for that purpose.

    Bottom line is that I like this blade- it's worth the extra effort and cost of making the above adjustments, I think. I do however wish that someone would make a "Gator" blade designed specifically for my TB model #34345...
    26 people found this helpful
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Top reviews from other countries

  • David Brose
    5.0 out of 5 stars It was easy to install and worked very well.
    Reviewed in Canada on May 24, 2022
    Pattern Name: MowerVerified Purchase
    I did some research on you tube and they strongly recommended that I sharpen the mulching mower blade prior to installation. The reason is that there is a thick coating of paint (for corrosion prevention) on the blade which reduces its sharpness and affects the quality of the finished cut. I sharpened the blade and installed it (use a torque wrench set 40 to 50 foot pounds). The finished cut was perfect without any grass clumping. I am very impressed.
    Report
  • Sam Meehan
    5.0 out of 5 stars Great quality!
    Reviewed in Australia on July 1, 2024
    Pattern Name: MowerVerified Purchase
    Bringing back how things used to be made, of good quality material and not a flimsy price of garbage like they are selling for the most part. Will definately buy again!
    Report
  • Joe Gavura
    5.0 out of 5 stars A great time saver on lawn care
    Reviewed in Canada on November 11, 2020
    Pattern Name: MowerVerified Purchase
    Performs as advertised. Chews the leaves up to little pieces. Great quality.
    When you remove your old blade check to see the direction the cutting edge of the blade is facing and match the new blade to it.
    Make sure there is no wobble in the action. It should be tight
    After starting and running it for a few minutes shut the motor off and just double check to ensure tightness.
    Should have bought this 10 years ago. No wasted time this year bagging leaves and lawn gets a good mulch. Highly recommended.
    Thanks Amazon for a great product. Nothing like this was available locally.
    Report
  • James
    4.0 out of 5 stars Good, basic lawnmower blade.
    Reviewed in Canada on June 21, 2020
    Pattern Name: MowerVerified Purchase
    This thing looks kinda fancy, but it works just like a budget blade.
    Mulches adequately. Grass clippings are small and uniform.
    Needs sharpening out of the box.
    The blade has a good amount of mass which helps it power though thick patches.
    Universal mounting pattern fit my MTD 4 lobe mount
    Not as securely mounted as an OEM MTD blade since the blade is kept from spinning freely by only the two dimples and the bolt - not the 4 centre lobes. I expect the blade will need to be re installed after hitting a large rock or stump.
    Report
  • Daniel Vincent
    5.0 out of 5 stars Awesome product!
    Reviewed in Canada on June 10, 2023
    Pattern Name: MowerVerified Purchase
    Bought this blade as I could not find a replacement for my 25 years old mower, even on the manufacturer’s website.

    This blade not only fit like a glove, but also cut perfectly with very small mulch. Probably saved me buying a new machine.

    Edit: a few mows later, if I could review this twice to leave more stars, I would.
    Report