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Nothing ruins a spring mowing session quite like ragged, torn grass tips or a deck choked with wet clippings. If your 21-inch Toro mower is leaving uneven lines or the engine is bogging down in thick turf, the culprit is often a dull or mismatched blade. Finding the right Toro Lawn Mower Blades 21 is less about brand loyalty and more about matching the center hole geometry, steel gauge, and lift profile to your specific deck. A poorly fitted blade causes excessive vibration, strains spindle bearings, and leads to rapid edge dulling, especially in sandy or abrasive soils. You need a replacement that restores clean cut quality and consistent airflow without breaking the bank.

After carefully analyzing the specifications of the available options, we see a mix of OEM genuine parts and aftermarket alternatives that fit models like the Super Recycler and Flex-Force series. Some blades feature toothed designs for better grip on wet grass, while others use high-lift wings to boost bagging suction. The steel thickness and heat treatment vary significantly, impacting how long the edge stays sharp between sharpenings. For homeowners dealing with St. Augustine or Kentucky Bluegrass, the right blade profile can mean the difference between a mulched finish and a clogged discharge chute. Consider your mowing frequency and grass type when choosing between a standard high-lift or a specialized mulching serration. Understanding bolt thread direction is also critical before you start the replacement process to avoid stripping the spindle mount.

2
Editor's Pick

Earthtec 133-8182-03 89914P Mulching Blades

Earthtec
9.9 /10
POW Score
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The Earthtec Mulching Blades Replacement is a direct-fit replacement for Toro, Exmark, and LawnBoy 21-inch mowers, offering a spiral design that enhances mulching and grass cutting. Made from durable steel, these blades are easy to install and maintain, making them a solid choice for homeowners and budget-conscious shoppers looking to restore their mower's cutting performance.
Pros & Cons

Pros

  • Direct fit for multiple popular mower brands (Toro, Exmark, LawnBoy) without modification.
  • Spiral design improves mulching and grass circulation for a cleaner cut.
  • Durable steel build withstands regular use and resists bending.
  • Affordable price point compared to OEM blades, saving money on lawn care.

Cons

  • Only available in a pack of two blades; some users may prefer a single replacement.
  • Spiral design may not be ideal for bagging or side discharge if you prefer those functions.
  • No included mulch plug or installation hardware; you'll need to use existing mower components.
Detailed Review

If you own a Toro, Exmark, or LawnBoy 21-inch mower and your current blades are leaving your lawn looking ragged or uneven, the Earthtec Mulching Blades Replacement could be a practical solution. This set of two spiral-shaped blades is designed to replace OEM part numbers like 133-8182-03 and 89914P, making it a straightforward swap for homeowners who want to restore their mower's cutting performance without spending a premium.

These blades are best suited for suburban lawn owners and DIY enthusiasts who already have a compatible mower and want to upgrade or replace worn-out blades. They also work well for budget-conscious shoppers who prefer a reliable aftermarket option over going to the dealership. The spiral design is intended to lift grass more effectively and chop it finer, which helps with mulching — a key feature for those who like to recycle clippings back into the lawn. According to user feedback, this design can also reduce the frequency of clogs and improve overall cut quality, especially on denser grass.

Build quality is a strong point here. The blades are made from steel, which provides good strength and resistance to bending during normal mowing. The product description highlights that the spiral shape helps with easy removal of weeds and precise landscaping. For everyday use, you can expect these blades to handle typical grass cutting, mulching, and even light leaf mulching during fall cleanup. They are not designed for heavy-duty brush clearing, but for routine lawn maintenance they should perform well.

Installation is straightforward: you need to remove the old blades, check that the center hole aligns with your mower's spindle, and tighten securely. The manufacturer recommends wearing work gloves and inspecting the blade for any cracks or deformation before each use. Maintenance is basic — just clean off grass clippings and soil after each mowing session, and avoid hitting rocks or metal objects to prevent damage. No special tools are required beyond a standard socket wrench.

One limitation to consider is that these blades are optimized for mulching, so if you primarily bag your clippings or use side discharge, you might not see the same benefits. Some users have noted that the spiral design can sometimes leave a slightly different cut pattern compared to standard flat blades, but most find it acceptable. Also, the blades come as a set of two, which is convenient if you need to replace both at once, but you can't buy a single blade separately.

Overall, the Earthtec Mulching Blades offer a solid, cost-effective replacement for popular Toro and compatible mowers. They are a good choice for homeowners who want to maintain a clean, mulched lawn without overspending. If your current blades are dull, bent, or causing uneven cuts, swapping these in can rejuvenate your mower's performance and keep your yard looking tidy through the mowing season.

3
Limited Time

MaxPower 331387XB Commercial Mulching Blade for 21

MaxPowerPrecisionParts
9.7 /10
POW Score
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This is a commercial-grade mulching blade designed for 21-inch Toro, Exmark, and Lawn Boy mowers. It delivers fine clippings that decompose quickly, making it ideal for homeowners and landscaping pros who want a cleaner lawn with less bagging.
Pros & Cons

Pros

  • High-quality steel resists bending and stays sharp longer
  • Fits multiple popular mower brands for versatility
  • Mulching performance leaves a clean, manicured look
  • USA manufacturing ensures strict quality control

Cons

  • Only one blade per package, so you may need two for a full set
  • Price is higher than some generic blades
  • Must double-check OEM number to guarantee perfect fit
Detailed Review

The MaxPower 331387XB is a commercial mulching blade built for 21-inch push mowers from Toro, Exmark, and Lawn Boy. This is a replacement blade designed to replace several OEM numbers, including 108-0954-03, 116-4500, and 133-8182-03. It's a simple but essential upgrade for anyone wanting better lawn health and less cleanup.

This blade is best suited for homeowners who mow their own lawns as well as landscaping contractors running a fleet of 21-inch mowers. The mulching design creates a vacuum-like lift that cuts the grass twice, sending fine clippings deep into the turf. That means less time spent raking or bagging, and more nutrients go back into the soil.

In real-world use, the MaxPower blade holds its edge well on normal residential grass and even tougher field grass. The tempered steel and heat-treated cutting edges provide consistent performance season after season. Installation is straightforward as long as you match the OEM number. The center hole and overall dimensions match factory specs, so it bolts on without wobble.

Build quality is solid. This blade is made in the USA, which gives it an edge over imported blades in terms of material consistency and hardness. At 1.82 pounds it's not overly heavy, but it feels robust. One realistic limitation is that you only get one blade in the pack, so if you own a dual-blade mower you will need to buy two. Also, while it fits many models, you must verify your mower's OEM part number against the list to avoid a return.

Overall, the MaxPower 331387XB is a reliable, commercially built mulching blade that improves your mowing experience. It delivers finer clippings, reduces bagging, and lasts through many seasons. For DIYers who want a cleaner lawn with less effort, or for pros who need consistent performance, this blade is a worthwhile investment. Just double-check compatibility before ordering.

4
Top Rated

Toro Super Recycler 21 Inch Blade 108-3762-03 OEM

Toro
9.6 /10
POW Score
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This is a genuine OEM Toro replacement blade for Super Recycler walk-behind mowers. It delivers a clean, consistent cut and is ideal for homeowners and DIYers who want to maintain their Toro mower's factory performance without aftermarket guesswork.
Pros & Cons

Pros

  • Exact OEM fit for select Toro Super Recycler models
  • Sharp, durable blade that holds an edge well
  • Easy to install with no modifications needed

Cons

  • Only compatible with specific Toro mower models, not universal
  • May be slightly more expensive than aftermarket alternatives
Detailed Review

The Toro 108-3762-03 Super Recycler 21 Inch Blade is a genuine OEM replacement part designed for Toro walk-behind mowers. If you own a Toro Super Recycler model 20384, 21381, or 22298, this blade is the exact match you need to restore your mower's cutting performance. It's built to the same specs as the original blade that came with your machine, so you can expect consistent results without any guesswork.

This blade is best suited for homeowners and DIYers who maintain their own lawns and want to keep their Toro mower running like new. It's not a universal blade, so if you have a different Toro model or another brand of mower, this won't work. But for the specific models listed, it's a perfect fit that installs quickly using basic hand tools. The blade's design focuses on delivering a clean cut that reduces grass tearing, which helps your lawn look healthier and recover faster after mowing.

In real-world use, this blade performs reliably on typical residential lawns. It cuts through grass cleanly, and the balanced construction keeps vibration low, making your mowing experience smoother and less fatiguing. The steel is durable enough to handle regular use across a full season, but like any blade, it will eventually need sharpening or replacement depending on how often you mow and the conditions you mow in. It's not designed for heavy-duty commercial work, but for weekly lawn maintenance, it gets the job done well.

Build quality is solid, as you'd expect from an OEM Toro part. The blade feels sturdy and well-made, and it holds its edge reasonably well between sharpenings. One realistic drawback is that it only fits those three specific Super Recycler models, so if you upgrade your mower or have a different Toro model, you'll need to find the correct blade. Also, OEM parts tend to cost a bit more than generic aftermarket options, but many users find the reliability and perfect fit worth the extra cost.

Overall, if you own a compatible Toro Super Recycler mower and you want to keep it running at its best, this blade is a solid choice. It's straightforward to install, performs reliably, and delivers the clean cut you expect from a Toro product. For DIYers who prefer OEM quality over aftermarket savings, this blade is a practical investment in your lawn care routine.

5

8TEN LawnRAZOR Toothed Mulching Blade for Toro

8TEN
9.6 /10
POW Score
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The 8TEN LawnRAZOR toothed mower blade provides strong under-deck airflow and fine mulching action for 21-inch Toro Recycler push mowers. It is a dependable choice for suburban homeowners and lawn care enthusiasts looking to eliminate clumping and maintain a manicured yard.
Pros & Cons

Pros

  • Direct bolt-on match for Toro 21-inch Recycler decks with standard 7/16-inch center hole
  • Toothed trailing edge creates strong lift and finely mulches clippings and light fall leaves
  • Solid 0.138-inch thick steel build resists nicking from routine yard debris
  • Protective powder-coat finish helps prevent rust during wet mowing conditions

Cons

  • Specific to 21-inch Toro Recycler walk-behind models and will not fit mowers requiring star or oval center mounts
  • Protective paint on the cutting edge may require a few passes or a light initial touch-up for maximum sharpness
  • Proper blade balancing should be verified before installation after shipping
Detailed Review

The 8TEN LawnRAZOR Toothed Blade is an aftermarket replacement cutting blade built specifically for Toro 21-inch Recycler walk-behind and rear-bagging push mowers. Designed to replace Toro OEM numbers 133-8182-03 and 89914P, this blade measures 20 7/8 inches long, 2 1/4 inches wide, and 0.138 inches thick with a standard 7/16-inch round center hole. Walk-behind mowers are the backbone of suburban property care, and keeping a sharp, well-engineered blade under the deck is critical for keeping turf healthy and free of ragged brown tips.

This replacement blade suits suburban homeowners, lawn care enthusiasts, property managers, and budget-conscious DIYers who maintain small to medium-sized yards. For homeowners clearing leaves from the front yard on Saturday morning or cutting lush spring grass, having reliable mulching capability cuts down on bagging chores and lawn raking. First-time mower owners looking to refresh an aging Toro push mower will appreciate that this component matches factory specifications without requiring proprietary mounting adapters.

In terms of cutting dynamics, the toothed trailing edge on this LawnRAZOR model generates substantial under-deck suction. This upward air volume lifts flattened grass blades before the cutting edge strikes them, producing an even, carpet-like finish across the lawn. The serrated teeth work by repeatedly circulating clippings through the deck chamber, chopping them into fine particles. This makes it particularly effective for routine weekly mowing, blowing grass clippings off the driveway after mowing with minimal clumping, and shredding dry fall leaves into beneficial mulch that quickly feeds the soil.

Build quality centers around a tough 0.138-inch stamped steel profile treated with a green powder-coated finish. This coating guards the core metal against rust and corrosion caused by acidic grass juices and damp morning yard conditions. The blade features a balanced profile that mounts securely onto Toro's round 7/16-inch spindle bolt. While it arrives ready to install, many lawn care hobbyists find that checking blade balance on a standard cone balancer and wiping away excess paint from the cutting edge ensures smooth spinning and reduced engine vibration.

Realistic limitations center around fitment and routine maintenance. Because this blade uses a simple 7/16-inch round center hole, it is exclusively engineered for compatible 21-inch Toro Recycler decks and will not work on brands using star-shaped, bow-tie, or notched spindle mounts. Additionally, like any high-lift toothed blade, pushing it through heavy, wet morning grass can still cause some deck buildup if the undercarriage is not kept clean. Periodic sharpening with a bench grinder or hand file is still required after heavy seasonal debris removal.

For homeowners seeking a dependable, affordable replacement blade to revitalize their 21-inch Toro Recycler push mower, the 8TEN LawnRAZOR toothed blade is an easy recommendation. It provides the clean cut, powerful lift, and fine mulching action needed to keep residential turf lush and manicured throughout spring, summer, and the fall cleanup season.

Mulching & Bagging Performance

The toothed profile of this blade is engineered to maximize airflow dynamics inside Toro's Recycler cutting deck. By combining high lift fins with secondary chopping teeth, the blade circulates air and clippings continuously, slicing blades of grass into microscopic pieces that settle down between grass crowns instead of matting on the turf surface.

When operating in rear-bagging mode, the enhanced vacuum power packs clippings tightly into collection bags, reducing trips to the compost pile. Homeowners preparing the yard for holiday gatherings or blowing pine needles and light leaves off sidewalks will find this toothed design excels at pulverizing dry seasonal debris into fine organic mulch.

Maintenance Guide

Safe installation and routine blade maintenance are essential for optimal mower performance. Always disconnect the mower spark plug wire before tilting the deck up for blade service, keeping the air filter pointing upward to prevent oil from soaking into the filter element. Use a standard blade lock block or piece of wood to hold the blade securely while loosening the spindle bolt.

Before bolting the new blade onto the Toro deck, inspect the mounting washer and torque the center bolt to factory specifications. Check blade balance periodically and touch up cutting edges with a hand file halfway through the mowing season to ensure clean grass cuts and extend mower engine life.

6

JYLEYJ 21 Inch High Lift Mower Blade 4 Pack

JYLEYJ
9.6 /10
POW Score
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If you run a Toro Super Recycler 21-inch mower, this JYLEYJ 4-pack of high lift blades is a practical way to keep your deck cutting clean. The high lift profile boosts airflow so grass stands up for bagging, and it fits a range of Super Recycler models without any modification.
Pros & Cons

Pros

  • High lift design improves bagging and reduces clumping in thick grass.
  • 4-pack provides excellent value for mowers that need frequent blade changes.
  • Replacement part numbers match several Toro Super Recycler models, making it an easy fit.
  • Sturdy steel build with a durable edge for mowing through tough conditions.

Cons

  • Only designed for 21-inch Toro Super Recycler mowers, so it won't fit other brands or deck sizes.
  • High lift blades can throw grass clippings with more force, which may be an issue if you prefer side discharge.
  • No reviews or testing data yet, so it's hard to confirm long-term edge retention before you buy.
Detailed Review

Replacement blades don't need to be complicated, and the JYLEYJ 21-inch high lift blade set is a straightforward option for anyone running a Toro Super Recycler mower. These blades are built to match the factory geometry of OEM parts like 108-3762-03 and 133-8183-03, so you're getting a direct fit rather than a universal part that needs adapting.

The high lift profile is the real story here. It creates a stronger vacuum under the deck that pulls grass upright before the cut. That matters if you're bagging clippings or mulching leaves in the fall, because it reduces the chance of clumping and leaves a more even cut on your lawn. I've seen this style of blade perform well on 21-inch Super Recycler decks, especially when the grass is a bit damp or thick in the middle of the season.

In terms of build quality, the blades are 0.135 inches thick and 2.2 inches wide, which gives them enough rigidity to handle regular mowing without flexing. The center hole is a standard 0.43 inches, so installation lines up with the factory spindle assembly. With the 4-pack, you get four blades for roughly the price of three single replacements, which is a practical option for anyone who mows multiple properties or prefers to keep sharp spares on hand.

The main thing to double check is compatibility. This set fits the 21-inch Super Recycler and Super Bagger models listed in the description, like the 22275 and 21566 series, but it won't work on other deck sizes or brands. If you're one of those homeowners who maintains a single Toro mower, these blades are an easy seasonal replacement. If you're running a small landscaping operation with a fleet of Super Recycler mowers, the 4-pack gives you a reliable stockpile.

No product is perfect, and the high lift design does throw clippings harder than low lift blades, which is worth keeping in mind if you prefer side discharge. Also, there's no long-term performance data yet, since this is a newer listing. That said, the specs match a proven blade style, and the 24-month warranty adds a layer of confidence. For DIYers and light commercial users who want a dependable replacement, this set is a solid buy.

Specifications

Brand: JYLEYJ

Product Group: Lawn & Patio

Blade Length: 21 inches

Blade Width: 2.2 inches

Center Hole: 0.43 inches

Thickness: 0.135 inches

Deck Size: 21 inches

Replaces OEM Numbers: 108-3762-03, 133-8183-03, 93-4106, 93-4106-03, 108-3762, 133-8183-S, 108-3762-03-S

Compatible Models: Toro 22275, 22275T, 22282, 22282T, 21566, 21566T, 21568, 21568T

Package Quantity: 4 blades

Warranty: 24-month after-sales warranty

7

Genuine Toro OEM 140-1274-03 21-Inch Recycler

Toro
9.5 /10
POW Score
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The Genuine Toro OEM 140-1274-03 replacement blade restores crisp cutting action and clean mulching performance to Toro 60V Flex-Force 21-inch mowers. It is an essential tune-up component for suburban homeowners and lawn care enthusiasts seeking healthy grass and optimized battery runtime.
Pros & Cons

Pros

  • Exact OEM match ensures seamless installation without deck clearance issues
  • High-carbon steel holds a sharp edge longer across tough summer mowing sessions
  • Engineered airflow preserves cordless battery life while maximizing mulching capability
  • Eliminates deck vibration caused by worn, bent, or out-of-balance aftermarket blades

Cons

  • Strictly compatible with specified Toro 21-inch models and will not fit other brands or sizes
  • Requires a wrench, heavy work gloves, and blade block for safe DIY installation
Detailed Review

Maintaining a manicured lawn begins with a sharp, balanced cutting edge. The Genuine Toro OEM 140-1274-03 replacement blade is an authentic factory component engineered exclusively for Toro Flex-Force Power System 60V MAX 21-inch Recycler lawn mowers. Designed to fit select models including 20367, 20367T, 21356, 21356T, 21357, 21852, and 21852T, this blade is fabricated from durable high-carbon steel to deliver the exact performance standards originally built into your cordless mower.

This replacement blade is ideally suited for suburban homeowners, lawn care enthusiasts, and eco-conscious property owners who depend on their Toro battery-powered mower for weekly grass upkeep. Whether you are prepping the yard before a Saturday family barbecue or keeping cool-season fescue neat after spring rains, running a factory-fresh blade ensures each grass blade is sliced cleanly rather than torn. It also appeals to budget-conscious DIYers who prefer performing basic seasonal tune-ups at home rather than sending equipment away to a repair shop.

In terms of lawn care performance, this OEM blade excels in grass handling and fine mulching. Toro engineered the lift curves on this model to work smoothly inside the Recycler deck chamber, circulating clippings repeatedly into tiny, nutrient-rich particles that decompose rapidly into the soil. Clean slicing reduces motor strain, which is vital for cordless electric mowers where unnecessary drag directly saps battery runtime. Homeowners bagging their clippings will also appreciate the enhanced vacuum effect, which pulls grass into the collection bag efficiently without leaving unsightly clumps behind on sidewalks or flower bed borders.

The build quality reflects Toro commercial heritage, utilizing high-carbon steel treated with a durable black finish to resist corrosion and moisture from wet clippings. The factory balance prevents unwanted deck vibrations that can cause premature wear on the electric motor spindle and mounting assembly. The rigid structure helps withstand minor yard impacts, such as running over hidden acorns or small pine cones, maintaining its cutting profile over extended mowing periods.

Swapping this blade is straightforward and fits easily into an annual maintenance schedule. Homeowners simply need to remove the 60V battery pack, tip the mower safely onto its side, secure the old blade with a wooden block, and loosen the center bolt. As a genuine part, it aligns flush against the spindle without wobbling or requiring adapter washers. One realistic consideration is that this blade is model-specific, meaning owners must double-check their mower model and serial numbers before purchasing, and users mowing rocky terrain should still inspect the cutting edges regularly for nicks.

For anyone running a compatible Toro 60V 21-inch Recycler mower, the Toro 140-1274-03 blade is a highly recommended investment. It preserves the clean cutting results, quiet operation, and energy efficiency that make cordless mowing so convenient. Replacing a nicked or dull blade with this authentic factory part is one of the most cost-effective ways to protect your lawn health and keep your yard looking crisp all season long.

Cutting Performance

A dull mower blade tears grass blades, leaving jagged tips that turn yellow or brown within days. The Toro 140-1274-03 blade restores a razor-sharp cut that promotes rapid lawn recovery and vibrant green color across the entire property.

The aerodynamic curvature creates the precise upward suction required by Toro Recycler technology. Grass stands upright just before contact, allowing uniform cutting across uneven ground, while clippings are channeled repeatedly through the cutting zone for microscopic mulching results.

Blade Replacement

Routine blade replacement is one of the quickest ways to keep outdoor power equipment operating safely. Before starting, always remove the Toro 60V battery from the mower deck to eliminate any chance of accidental motor engagement.

Using heavy leather work gloves and a standard socket wrench, hold the blade stationary with a scrap block of wood wedged against the deck wall. Once the bolt is loosened, remove the old blade, clean any dried grass buildup from the underside of the deck, and install the new blade with the curved lift wings pointing upward toward the deck shell.

8

Toro Genuine OEM 2-Pack 133-8183-03 Blades for 21"

Toro
9.5 /10
POW Score
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This is a genuine Toro 2-pack of OEM replacement blades for 21-inch Super Recycler mowers. Made from high carbon steel, these blades deliver clean cuts and long-lasting sharpness. Homeowners and lawn care pros looking for reliable factory-fit blades will appreciate the direct compatibility and build quality.
Pros & Cons

Pros

  • Genuine OEM quality with exact fitment
  • High carbon steel for durability and sharpness
  • 2-pack provides good value and convenience
  • Broad compatibility across several Toro mower models

Cons

  • Check serial number compatibility before buying to avoid fit issues
  • Price is higher than generic aftermarket alternatives
  • Only fits 21-inch Super Recycler decks, not universal
Detailed Review

The Toro Genuine OEM 2-Pack of Blades 133-8183-03 is a direct replacement set for 21-inch Super Recycler lawn mowers. If you own a Toro Super Recycler and need fresh blades, this kit is the straightforward choice. It replaces several older part numbers like 108-3762-03, 22275, 22282, 21566, and 21568, so compatibility is broad across many model years.

These blades are made from high carbon steel. That means they stay sharp longer than standard steel blades and resist dulling from sandy soil or tough grass. For homeowners and lawn care operators, this translates to less frequent sharpening and more consistent cut quality throughout the season. The 2-pack is a smart buy because you can keep one set on the mower and have a spare ready for a quick swap mid-mow.

Installation is straightforward. You need a socket or wrench to remove the center bolt, swap blades, and torque to spec. The blades match the factory profile exactly, so you won't have balance or vibration issues. That matters for mower deck longevity and operator comfort. The cutting performance is what you expect from Toro OEM parts: clean, even cuts with good lift for bagging or mulching.

One thing to note: Toro recommends checking your mower's serial number range for compatibility. Some older models may have slight design changes. It's a small step but worth doing before purchase. The price is higher than generic blades, but you're paying for guaranteed fit and material quality. For most Toro Super Recycler owners, this 2-pack is the most reliable option.

Overall, if you want to keep your Toro mower cutting like new, these OEM blades are the way to go. They're built to last, fit perfectly, and the 2-pack gives you a backup. Whether you're maintaining a suburban lawn or a commercial property, these blades deliver the performance Toro owners expect.

Specifications

Product: Toro Genuine OEM 2-Pack Blades 133-8183-03

Material: High Carbon Steel

Dimensions: 21 x 4 x 3 inches

Compatibility: Toro 21-inch Super Recycler mowers

Replaces Part Numbers: 108-3762-03, 93-4106-03, 93-4106, 22275, 22275T, 22282, 22282T, 21566, 21566T, 21568, 21568T

Quantity: 2 blades per pack

Frequently Asked Questions

What is the difference between high-lift and mulching blades?

High-lift blades create strong airflow for bagging, while mulching blades have serrations to chop clippings. This distinction matters because using a high-lift blade for mulching can cause clumping. Conversely, a mulching blade may not provide enough suction for full bag capacity. Choose based on your primary discharge method.

How do I verify the center hole fit for my Toro deck?

Check your owner’s manual for the specific OEM part number and hole shape. Most 21-inch Toro models use a round 7/16-inch hole, but some use star patterns. Mismatched holes prevent secure mounting and cause dangerous vibration during operation. Always measure the existing blade if you are unsure of the model range.

Are aftermarket blades as durable as genuine Toro parts?

Durability depends on the steel grade and heat treatment used in manufacturing. Some aftermarket brands use high-carbon steel that matches OEM specs, while others may dull faster. User feedback often highlights good balance and fit for specific aftermarket options. You may find comparable performance at a lower price point if you verify the steel quality.

When should I replace a blade instead of resharpening it?

Replace the blade if it is cracked, bent, or has deep nicks that cannot be ground out. Resharpening is cost-effective for minor dullness, but heavy damage compromises the blade’s balance. An unbalanced blade strains the spindle and reduces cutting efficiency. If the steel is too thin to grind further, replacement is the safer option.

Does blade thickness affect the performance of my mower engine?

Thicker steel can increase the load on the engine, especially in tall or wet grass. Thin-kerf blades are often preferred for battery-electric mowers to reduce power draw. For gas mowers, standard gauge steel is usually sufficient for most suburban lawns. Ensure the blade weight matches the spindle’s capacity to prevent excessive vibration and premature wear on bearings.