Lawn mower blades don’t cost a fortune, but prices do add up fast. In 2026, most standard 16–21 inch blades run about $12–$25, mulching or 3‑in‑1 blades land around $18–$40, and high‑lift or heat‑treated options fall in the $25–$55 range.
OEM branded blades usually sit between $30–$70, while two‑packs or specialty 42‑inch sets stretch from $40–$120. These price jumps come from differences in steel quality, heat treatment, coatings, and how precisely the blade fits your mower.
| MTD Mulching Blade 21-Inch Replacement (942-0741A) |
| Best for MTD/Cub Cadet | Blade Length: 21-inch (designed for 21″ decks) | Compatibility / Fitment: Fits multiple brands (MTD, Yard Man, Troy-Bilt, Huskee, Bolens, Craftsman; select Murray/Snapper; specific Cub Cadet models) | Material / Construction: High-quality steel (engineered for mulching; OEM replacement) | VIEW LATEST PRICE | Read Our Analysis |
| Greenworks Replacement Lawn Mower Blades (Fits : 20′ Mower / 25302) |
| Dual-Blade Fit | Blade Length: 20-inch fit (actual blade ~1″ shorter than 20″ deck) | Compatibility / Fitment: Fits Greenworks Twin Force model 25302 (20″ deck) | Material / Construction: Heat-treated steel | VIEW LATEST PRICE | Read Our Analysis |
| MaxPower Mulching Blade for 21″ Greenworks/Kobalt |
| Electric-Mower Specific | Blade Length: 19.45 inches (for 21″ cut specification) | Compatibility / Fitment: Fits Greenworks 2502202 and Kobalt KM210-06 (specific electric models) | Material / Construction: Steel (mulching blade for electric mowers) | VIEW LATEST PRICE | Read Our Analysis |
| Maxpower Mulching Blade 21″ for MTD/Cub Cadet/Troy-Bilt |
| OEM Replacement Alternative | Blade Length: 21 inches | Compatibility / Fitment: Fits MTD, Cub Cadet, Troy-Bilt, Craftsman and listed OEM numbers / many model lists | Material / Construction: Steel (sharpened and powder coated; meets OEM specs) | VIEW LATEST PRICE | Read Our Analysis |
| Greenworks Replacement Lawn Mower Blade (Fits : 16′ Mower / 25322 / 25242) |
| Compact Corded Fit | Blade Length: 15.75 inches (fits 16″ deck) | Compatibility / Fitment: Fits Greenworks 16″ corded mowers (25322, 25242) | Material / Construction: One-piece steel forging | VIEW LATEST PRICE | Read Our Analysis |
| Wadoy 21″ Replacement Lawn Mower Blades (2-Pack) |
| Value Two-Pack | Blade Length: 21 inches | Compatibility / Fitment: Fits Greenworks 21″ models MO40L4413, MO40L03, MO48L4422 (replacement C3208101) | Material / Construction: High-carbon steel | VIEW LATEST PRICE | Read Our Analysis |
| 21″ Mulching Blade for Troy-Bilt & MTD Lawnmowers |
| High-Lift Mulcher | Blade Length: 21 inches (533 mm) | Compatibility / Fitment: Fits Troy-Bilt and Craftsman model lists (Bow Tie center hole mowers) | Material / Construction: Steel (painted cutting edges; hardened specifications) | VIEW LATEST PRICE | Read Our Analysis |
| Terre 2-Pack High-Lift 42″ Lawn Mower Blades |
| Heavy-Duty Decks | Blade Length: 20.875 inches (20-7/8″) | Compatibility / Fitment: Fits various 42″ deck lawn tractors (Craftsman, Husqvarna, Snapper, Poulan part numbers) | Material / Construction: Steel (specified thickness 0.157″) | VIEW LATEST PRICE | Read Our Analysis |
| EGO POWER+ 21″ Replacement Blade for LM2100 Series |
| Brand-Matched Performance | Blade Length: 21 inches | Compatibility / Fitment: Fits EGO POWER+ LM2100 series (LM2100/LM2101/LM2142SP etc.) | Material / Construction: Factory-sharpened steel | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
MTD Mulching Blade 21-Inch Replacement (942-0741A)
Should you want a reliable, easy swap that turns clippings into fine mulch, the MTD 21-inch mulching blade 942-0741A is a smart choice for owners of compatible walk-behind mowers. You’ll like that it’s a genuine MTD part made for 21-inch decks, so fit and balance stay right. It grinds grass into finer particles, which feeds your lawn rather than leaving clumps. Check your owner’s manual and deck housing for model numbers before you buy. It fits many brands and select Murray and Snapper units, and it directly replaces several Cub Cadet models, making installation straightforward and reassuring.
- Blade Length:21-inch (designed for 21″ decks)
- Compatibility / Fitment:Fits multiple brands (MTD, Yard Man, Troy-Bilt, Huskee, Bolens, Craftsman; select Murray/Snapper; specific Cub Cadet models)
- Material / Construction:High-quality steel (engineered for mulching; OEM replacement)
- Blade Type / Function:Mulching blade
- Package Quantity:Single blade (1)
- Intended Mower Type / Power Source:Walk-behind push/powered mowers (gas/electric compatible per OEM fit)
- Additional Feature:Direct OEM replacement
- Additional Feature:Precision mulching design
- Additional Feature:Fits multiple brands/models
Greenworks Replacement Lawn Mower Blades (Fits : 20′ Mower / 25302)
Should you own a Greenworks Twin Force 25302 with a 20 inch deck and you want a reliable way to keep your lawn looking sharp, these replacement blades are a smart pick. You get a set with right and left blades that fit the 20″ deck. The blades are about an inch shorter than the deck so tips clear the edge. They’re made from heat treated steel, so they stay sharper and resist wear. You can remove them easily for sharpening or swap them out whenever needed. This makes maintenance simple and keeps cutting performance consistent.
- Blade Length:20-inch fit (actual blade ~1″ shorter than 20″ deck)
- Compatibility / Fitment:Fits Greenworks Twin Force model 25302 (20″ deck)
- Material / Construction:Heat-treated steel
- Blade Type / Function:Replacement mower blades (left + right) — cutting blades for twin-blade deck
- Package Quantity:Set of 2 blades (right + left)
- Intended Mower Type / Power Source:Electric corded twin-blade Greenworks deck
- Additional Feature:Twin Force compatible set
- Additional Feature:Right + left blades
- Additional Feature:Heat-treated steel
MaxPower Mulching Blade for 21″ Greenworks/Kobalt
In case you own a 21 inch Greenworks or Kobalt electric mower and want cleaner clippings with less bagging, the MaxPower 33121GWB mulching blade is designed for you. You’ll find it replaces Greenworks 29423 and Kobalt 535386, so check your current OEM number before buying. It fits Greenworks 2502202 and Kobalt KM210-06 only, so it won’t work on every model. The blade measures 19.45 across 2 inches and comes as a single mulching blade in the package. Recall this blade is for electric mowers only and not suitable for gas models, so match fit and specs carefully.
- Blade Length:19.45 inches (for 21″ cut specification)
- Compatibility / Fitment:Fits Greenworks 2502202 and Kobalt KM210-06 (specific electric models)
- Material / Construction:Steel (mulching blade for electric mowers)
- Blade Type / Function:Mulching blade
- Package Quantity:Single blade (1)
- Intended Mower Type / Power Source:Electric mowers only (specific Greenworks/Kobalt electric models)
- Additional Feature:Replaces Greenworks OEM
- Additional Feature:Electric-mower only
- Additional Feature:Exact 19.45″ length
Maxpower Mulching Blade 21″ for MTD/Cub Cadet/Troy-Bilt
In case you want a dependable replacement that fits a wide range of MTD, Cub Cadet, and Troy-Bilt mowers, the MaxPower 21-inch mulching blade is a solid pick for homeowners who care about a clean cut and easy installation. You’ll get a 21-inch by 2.25-inch blade with a bow tie center hole and 5/16-inch outside holes that match many OEM patterns. It ships sharpened, powder coated, and made in the USA to meet or exceed OEM specs. It fits dozens of CC, SC, S, and TB models, replaces many part numbers, and has strong customer ratings.
- Blade Length:21 inches
- Compatibility / Fitment:Fits MTD, Cub Cadet, Troy-Bilt, Craftsman and listed OEM numbers / many model lists
- Material / Construction:Steel (sharpened and powder coated; meets OEM specs)
- Blade Type / Function:Mulching blade (3-in-1 capability implied)
- Package Quantity:Single blade (1)
- Intended Mower Type / Power Source:Walk-behind (gas) mowers from MTD/Cub Cadet/Troy-Bilt/Craftsman
- Additional Feature:Bow-tie center hole
- Additional Feature:Powder-coated finish
- Additional Feature:Made in USA
Greenworks Replacement Lawn Mower Blade (Fits : 16′ Mower / 25322 / 25242)
In case you own a Greenworks 16-inch corded mower and want a straightforward, long-lasting blade replacement, this Greenworks 15.75-inch one-piece steel blade fits models 25322 and 25242 and gives you reliable performance without fuss. You’ll appreciate the solid single-piece steel construction. It resists bending and holds an edge longer, so you cut more without stopping. Because it’s made for those specific mowers, installation is simple and usually quick. Expect clean, even trims that make your lawn look cared for. Should you want durability and easy upkeep, this blade is a practical, reassuring choice.
- Blade Length:15.75 inches (fits 16″ deck)
- Compatibility / Fitment:Fits Greenworks 16″ corded mowers (25322, 25242)
- Material / Construction:One-piece steel forging
- Blade Type / Function:Cutting blade (standard replacement for 16″ deck)
- Package Quantity:Single blade (1)
- Intended Mower Type / Power Source:Electric corded Greenworks 16″ mowers
- Additional Feature:One-piece forged steel
- Additional Feature:Actual 15.75″ length
- Additional Feature:High longevity/durability
Wadoy 21″ Replacement Lawn Mower Blades (2-Pack)
In case you’ve got a Greenworks 21 inch mower and want a quick, reliable fix, the Wadoy 21 inch 2-pack is a smart choice that’ll get you back to mowing fast. You’ll find two 21 inch high carbon steel blades that fit Greenworks models MO40L4413, MO40L03, and MO48L4422, part number C3208101. They resist wear and tear and have a rust protective coating, so they last through seasons. Installation is simple and quick, so you can swap blades in minutes. These blades cut cleanly and evenly, helping your lawn look lush and green without fuss.
- Blade Length:21 inches
- Compatibility / Fitment:Fits Greenworks 21″ models MO40L4413, MO40L03, MO48L4422 (replacement C3208101)
- Material / Construction:High-carbon steel
- Blade Type / Function:Replacement cutting blade (21″ mulching/standard)
- Package Quantity:Two-pack (2 blades)
- Intended Mower Type / Power Source:Electric Greenworks 21″ mowers
- Additional Feature:High-carbon steel
- Additional Feature:Rust-resistant coating
- Additional Feature:Includes two blades
21″ Mulching Blade for Troy-Bilt & MTD Lawnmowers
Provided you want a blade that usually gives cleaner cuts and better mulching on 21 inch Troy-Bilt or MTD mowers, this 21 inch mulching blade is a smart pick. You’ll like its curved 3-in-1 design because it mulches, bags, and side discharges without fuss. It fits many Troy-Bilt and Craftsman models but only provided your spindle uses the Bow Tie center hole. The high lift enhances bagging capacity and airflow, so clippings shred finer and clogging drops. The painted edges resist rust and keep hands safer during install. You can sharpen it, and tests confirm strong durability and balance.
- Blade Length:21 inches (533 mm)
- Compatibility / Fitment:Fits Troy-Bilt and Craftsman model lists (Bow Tie center hole mowers)
- Material / Construction:Steel (painted cutting edges; hardened specifications)
- Blade Type / Function:3-in-1 mulching/high-lift (mulch, bag, side discharge)
- Package Quantity:Single blade (1)
- Intended Mower Type / Power Source:Walk-behind (gas) Troy-Bilt & Craftsman mowers (Bow Tie spindle)
- Additional Feature:3-in-1 mulching design
- Additional Feature:High-lift airflow
- Additional Feature:Bow-tie spindle pattern
Terre 2-Pack High-Lift 42″ Lawn Mower Blades
Should you want a simple, reliable upgrade for a 42 inch deck that improves bagging and lift, the Terre 2-Pack High-Lift blades are a smart choice you’ll appreciate. You’ll get two 20-7/8 inch blades, 2-1/4 inch wide and 0.157 inch thick, built to increase airflow and pull clippings into the bag. They fit many Craftsman, Husqvarna, Snapper, and Poulan models and match common part numbers like 138971 and 532138971, so you can replace worn blades without guesswork. Installation is straightforward, and the five-point star center keeps blades centered and secure as you mow.
- Blade Length:20.875 inches (20-7/8″)
- Compatibility / Fitment:Fits various 42″ deck lawn tractors (Craftsman, Husqvarna, Snapper, Poulan part numbers)
- Material / Construction:Steel (specified thickness 0.157″)
- Blade Type / Function:High-lift mower blade
- Package Quantity:Two-pack (2 blades)
- Intended Mower Type / Power Source:Lawn tractor / zero-turn style 42″ decks (gas garden tractors)
- Additional Feature:5-point star center
- Additional Feature:High-lift bagging blade
- Additional Feature:Thick 0.157″ steel
EGO POWER+ 21″ Replacement Blade for LM2100 Series
Should you want a simple, reliable upgrade that gives your EGO POWER+ LM2100 series mower real versatility, the 21″ AB2100 blade fits the bill. You’ll get a factory-sharpened steel blade made for LM2101, LM2100, LM2102SP, LM2100SP, and LM2142SP models. It uses a 3-in-1 design for mulching, bagging, and side discharge, so you can switch mowing styles without fuss. Because it’s a genuine EGO part, you’ll enjoy precise fit and excellent cutting performance that helps your grass stay healthy. You’ll feel confident installing it, familiar with it enhances versatility and maintains reliable cuts.
- Blade Length:21 inches
- Compatibility / Fitment:Fits EGO POWER+ LM2100 series (LM2100/LM2101/LM2142SP etc.)
- Material / Construction:Factory-sharpened steel
- Blade Type / Function:3-in-1 blade (mulch, bag, side discharge)
- Package Quantity:Single blade (1)
- Intended Mower Type / Power Source:Electric cordless EGO POWER+ LM2100 series
- Additional Feature:Genuine EGO part
- Additional Feature:Factory-sharpened steel
- Additional Feature:3-in-1 cutting modes
Factors to Consider When Choosing Lawn Mower Blade Replacement Costs
I want to help you pick the right replacement blade via walking through the key factors that affect cost and performance. We’ll look at blade type and purpose, material and durability, compatibility and fitment, sharpening and maintenance, and how cost compares to performance so you can make a smart choice. I know this feels technical, but I’ll keep it simple and practical so you can feel confident about what to buy.
Blade Type & Purpose
Whenever I’m choosing a replacement blade, I focus on what I need the mower to do and how much I’m willing to spend, because blade type directly affects performance and cost. I pick mulching blades whenever I want fine clippings that feed the lawn, understanding they cost about 10 to 30 percent more due to extra curvature and serrations. In case I need to collect clippings, I choose high lift blades for stronger airflow and better bagging, accepting higher prices for thicker steel and lift design. For dry or sandy yards, low lift or standard blades work well and usually cost the least. Sometimes I go with 3-in-1 blades for versatility and savings. For tough grass, specialty heavy-duty blades are worth the extra cost.
Material & Durability
Now that we’ve picked the blade type that matches how we mow, we need to look at what the blade is made of and how long it will last, because material and durability shape both performance and cost. I usually weigh options based on thinking about steel first. Low to high carbon steel is common and cheaper, while higher carbon or alloy steels hold an edge longer, so you replace less often. Heat treated and hardened blades stay sharp and resist bends, which can justify paying more up front. Coatings fend off rust in damp yards and extend life. Thicker or reinforced profiles resist impact damage but add weight and a small power draw. For heavy use, specialty alloys or cryogenic treatments cost more yet give noticeably longer wear.
Compatibility & Fitment
Because a blade that doesn’t fit can cost you time, money, and a lot of frustration, I walk you through the key fitment checks before you buy. I initially measure blade length, width, and thickness and compare the center hole pattern like bow-tie, 5-point star, or round. Then I match blade type to deck size so the cutting edge clears the deck and airflow stays correct for mulching or high-lift tasks. I also confirm bolt size, center-to-center hole spacing, and number of mounting holes to avoid vibration or spindle damage. Next I check whether the blade suits gas or electric torque and RPM. Finally I consult the owner manual or deck stamping for model and part numbers to prevent returns.
Sharpening & Maintenance
You’ve checked fit and bolt patterns, and now you’ll want to ponder about sharpening and ongoing care since a correct fit only matters whenever the blade actually cuts well. I sharpen every 20–25 hours or at least once a season to keep cuts clean and gas use down. Dull blades tear grass, invite disease, and make me spend more time on clippings. I weigh professional sharpening costs of 5 to 20 dollars against buying a file or grinder for near-zero per sharpen expense. After sharpening I always balance blades to stop vibration that wears spindles and bearings faster. I also inspect for cracks or more than 1/8 inch loss at the edge and replace any blade with structural damage for safety.
Cost Versus Performance
Each time I help people decide between cheap and pricier mower blades, I focus on real costs, not just the sticker price. I explain that higher-priced blades often use heat-treated or high-carbon steel and stay sharp longer, so you sharpen or replace them less. Cheaper blades might save you now but can dull fast, be unbalanced, and strain the engine, which raises fuel use and wear. Features like mulching geometry or high-lift profiles add cost but improve cut quality and let you finish sooner. So I tell readers to calculate total cost of ownership through adding purchase price, expected lifespan, and maintenance. For many mowers, spending a bit more for a balanced, heat-treated blade reduces long-term costs.
