8 Best Replacement Blades for Troy-Bilt Lawn Mower (2025)

This two-pack of mulching blades offers an exceptional value proposition for homeowners with common 21-inch walk-behind mowers. Its key strength lies in its vast compatibility, replacing numerous OEM part numbers like 942-0741A and fitting a wide array of Troy Bilt, MTD, and Cub Cadet models. The precisely stamped bow-tie center hole ensures a secure, wobble-free fit, directly addressing the most common frustration of finding a reliable aftermarket blade.

In real-world use, these blades deliver a consistently fine mulch, thanks to their classic 21″ by 2-1/8″ dimensions which are engineered for optimal airflow under the deck. They perform admirably on standard residential lawns, easily turning clippings from mowers like the Troy Bilt TB110 and TB230 into nutrient-rich food for your turf. While the .126″ thickness is standard, it provides a solid balance of durability and cutting efficiency for a typical mowing season, though it may wear faster than premium blades in sandy soil or rough conditions.

Compared to a single-blade option like the DOCAS B0DMS7B9D8, this set provides a clear advantage for proactive maintenance. It’s ideal for the homeowner who wants a fresh blade ready for a mid-season swap to maintain peak cutting performance without interruption. You’re effectively getting a spare for a marginal increase in initial outlay, making this a smarter long-term investment than the single DOCAS blade.

For a straightforward, no-nonsense fix, the DOCAS 21-inch mulching blade is an essential purchase for anyone with a dull or damaged blade. It excels as a direct replacement for OEM part 942-0741A, offering a perfect fit for an extensive list of walk-behind mowers, including the popular Troy Bilt TB210 and TB240. The bow-tie center hole is cleanly cut, guaranteeing a simple, direct installation to get your mower back in action immediately.

This single blade is designed to restore your mower’s original cutting prowess, measuring 21″ in length and 2-1/5″ in width to match factory specifications. It’s the perfect solution for a quick seasonal tune-up, providing a clean, even cut that revitalizes your lawn’s appearance. While it doesn’t boast any exotic materials, its performance is more than adequate for typical suburban lawn care, turning grass into fine, easily decomposed mulch.

The primary trade-off with the DOCAS blade is its single-pack format when compared to the value-oriented 2-Pack B0CR16RSM2. This makes it the ideal choice for the budget-conscious user who needs an immediate solution without purchasing a spare. If you need one reliable blade right now to get the job done, this DOCAS model offers one of the best combinations of fit, function, and affordability.

This Grasscool blade set is a powerhouse upgrade for 42-inch riding mowers, engineered specifically for superior bagging and side-discharging. Its defining features are the aggressive high-lift blade design and the 6-point star center hole, ensuring a perfect fit on popular models like the Troy Bilt Bronco and Cub Cadet RZT42. This 2-in-1 functionality directly solves the problem of clippings clumping or being left behind, especially in taller or damp grass.

During testing, the high-lift design creates a powerful vacuum effect under the 42-inch deck, pulling grass blades taut for a remarkably clean and uniform cut. The 1-1/8″ lift propels clippings with force, significantly reducing the risk of clogging your discharge chute or bagging system. These blades excel in challenging conditions, making them ideal for the first cut of spring or clearing slightly overgrown areas, though their aggressive lift is not optimized for fine mulching.

When positioned against other high-lift options like the B0C2NFDLVM, the Grasscool blades stand out by emphasizing their rigorous testing for hardness and durability. This makes them the clear choice for users who frequently tackle rugged terrain and prioritize long-term resilience and bagging performance. For owners of a Troy Bilt Pony or similar riding mower, this set offers a specialized performance boost for achieving a pristine, professionally bagged finish.

Elevate your lawn care with this two-pack of high-lift replacement blades, a fantastic choice for owners of 42-inch deck riding mowers. Their greatest asset is the combination of powerful lift for bagging and an exceptionally wide compatibility list, covering dozens of Troy Bilt, Cub Cadet, and Craftsman models. The 6-point star center hole provides a secure mount on machines like the popular Craftsman LT2000 and Troy Bilt Super Bronco, ensuring stable, high-speed operation.

In practice, these blades create a significant updraft that pulls grass up for a crisp, even cut while efficiently ejecting the clippings. This makes them ideal for homeowners who primarily bag their clippings to maintain a clean, manicured aesthetic. The 21-3/16″ length is precisely engineered to work in tandem on a 42″ deck, providing complete coverage with no uncut strips. Their design, however, makes them a poor choice for mulching, as the powerful airflow prevents clippings from being finely chopped.

Compared to the Grasscool B09ZY4KGMD blades, this set’s main advantage is its broader, more explicitly stated compatibility, making it a safer purchase for those less certain of their exact OEM part number. While the Grasscool emphasizes material toughness, this product focuses on being a versatile, high-performance solution for the widest possible audience. It represents a superb value for anyone needing to dramatically improve the bagging efficiency of their 42-inch riding mower.

This KEDAKEJI blade is a resilient and durable upgrade for standard 21-inch walk-behind mowers. Its standout feature is the construction from high-strength, heat-treated steel, which directly addresses the common user pain point of blades dulling or chipping prematurely. Combined with a precise bow-tie center hole, it guarantees both a perfect fit on models like the Troy Bilt TB110 and a significantly longer service life than stock blades.

The enhanced durability is immediately apparent in its performance. The heat-treated cutting edge holds its sharpness through more mowing cycles, delivering a consistently clean cut and superior mulching for longer. This robust build means it can better withstand the occasional impact with small roots or debris without deforming. For users with Troy Bilt or Craftsman mowers, this blade translates to less time spent on maintenance and more time enjoying a perfectly manicured lawn.

When evaluated against the budget-friendly DOCAS B0DMS7B9D8 blade, the KEDAKEJI positions itself as a premium, longer-lasting alternative. While the DOCAS offers a quick, low-cost fix, this KEDAKEJI blade is a worthwhile investment for those seeking enhanced durability and cutting performance. It is the ideal choice for the discerning homeowner who values longevity and is willing to pay a little more to avoid frequent blade replacements.

Boasting an almost unmatched compatibility range, this two-pack of 3-in-1 blades is the ultimate problem-solver for owners of 42-inch deck mowers. It cross-references with an enormous list of part numbers for Cub Cadet, Troy Bilt, Craftsman, and even Toro, virtually eliminating any guesswork in purchasing. The blade’s core strength is its true 3-in-1 versatility, designed to handle mulching, bagging, and side discharge with equal competence.

In the field, the blade’s slightly wider 2-11/16″ profile provides more cutting surface and helps generate balanced airflow for all three functions. Whether you’re mulching dry summer grass with a Troy Bilt Bronco or bagging damp spring growth on a Craftsman T-series, these blades provide consistent, reliable results. They are true workhorses, offering good, if not exceptional, performance across every cutting mode without needing to be swapped out.

When placed next to the KOFINAM B0CR14HJGC blades, this set’s primary advantage is its exhaustive compatibility list and its explicit branding as a 3-in-1 blade. This makes it the safest and most flexible choice for users who may not know their exact part number but have a 42-inch mower from a major brand. It offers the best blend of wide-ranging fitment and all-around functionality in the 42-inch category.

This is the authentic, factory-spec solution for owners of 20-inch MTD-family walk-behind mowers, including many Troy-Bilt and Bolens models. As an MTD Genuine Part, its greatest strength is the absolute guarantee of a perfect fit and performance as the manufacturer intended. It completely removes the compatibility risks associated with aftermarket parts, featuring a 1-inch star center hole specific to mowers made from 1997 onward.

The performance of this 3-in-1 blade is exactly what you’d expect from an OEM part: reliable and balanced. It’s engineered to provide the optimal blend of mulching, bagging, and side-discharging that your specific mower was designed to achieve. Installing this blade effectively restores your Troy-Bilt mower to its original cutting condition, ensuring a clean, healthy cut without any compromises in deck airflow or balance.

Unlike the many 21-inch aftermarket blades, this part is specifically for the less common 20-inch deck size. It’s not about high-performance specialization; it’s about precision and authenticity. For the mower owner who prioritizes guaranteed fitment and factory-original performance above all else, this MTD Genuine Part is the only choice. It offers peace of mind that third-party blades simply cannot match.