Grasscool 942-04308 / 942-04308A High-Lift Mower Blades (6-Point Star, for 42-Inch Troy-Bilt & Cub Cadet)
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Product description
If your 42-inch mower is struggling with tall grass or uneven patches, a blade swap can make a noticeable difference—at least on paper. The Grasscool 942-04308 / 942-04308A high-lift mower blades are designed to replace specific OEM-style blade numbers and keep airflow strong so clippings move out efficiently, helping reduce clogs under the deck.
That said, blade fit is where things can get annoying. This blade is only meant for a specific spindle pattern (a 6-point star), so you’ll want to verify compatibility before ordering. If you get the spindle and the center hole pattern right, the rest is pretty straightforward.
Key takeaways
These blades are built for a high-lift mowing style, aiming for stronger airflow to pull clippings upward and out. On real yards—overgrown sections, damp grass, or uneven ground—high-lift blades typically help you move material without as much buildup under the deck.
Where it gets practical is that you’re not just buying “a blade.” You’re buying a replacement intended for certain 42-inch mower decks, with a center hole shaped for a 6-point star spindle.
One limitation to keep in mind: this is not a universal blade. The product notes that it is NOT suitable for certain Cub Cadet models that use a different center shape (not the 6-point star). So if you’re unsure, double-check the spindle hole pattern first.
What you’ll notice day to day
The high-lift design is the main reason people choose blades like this. The idea is simple: more lift and better discharge means faster clearing of cuttings into the bagging system or discharge path. The result you’re looking for is less grass sticking underneath the mower deck and a cleaner cut when the lawn gets thick.
It’s especially relevant for mowing conditions that are hard on standard blades—think tall growth, slightly wet clippings, or areas where the ground isn’t perfectly flat. If you’ve ever pulled the deck cover and found a compacted mat of clippings, high-lift airflow is the kind of fix you’re hoping for.
A small human detail: the cutting edges are painted to resist oxidation and to help protect hands during installation. That paint is expected to wear off as you mow, so don’t treat it like a permanent coating.
Compatibility you should verify first
This blade is listed for specific 42-inch mower models, including multiple Cub Cadet and Troy-Bilt setups. However, the most important check isn’t just the mower model—it’s the spindle center pattern.
The product states that this blade is ONLY compatible with a 6-point star spindle (5/8 inches). Before buying, confirm that your mower’s center hole pattern matches that 6-point star design. If it doesn’t, you’ll likely run into installation issues.
It also notes that this blade is NOT suitable for Cub Cadet 742-05177 models that use an “S” form blade (XT1/XT2 LT42 LX42 and similar). In other words: if your Cub Cadet uses that spindle/blade arrangement, this replacement is the wrong path.
Tech specs
- Name: 942-04308 / 942-04308A Mower Blade
- Type: High lift mower blade
- Size (for 42-inch mower decks)
- Dimensions: 538 mm (21-3/16") length, 60 mm (21-3/16") width
- Thickness: 4 mm (5/32")
- Center hole shape: 6-point star
- Center hole size: 15,8 mm (5/8")
- Lift point (center/bore): 28 mm (1-1/8")
Pros
- High-lift blade design aimed at stronger airflow for faster cutting discharge
- Intended to help reduce buildup and reduce the risk of clogs under the deck
- Built for tougher mowing situations like tall grass, wet grass, and uneven terrain
- Comes as a replacement with painted edges to help prevent rust and protect hands during install
Should you buy it?
Buy the Grasscool 942-04308 / 942-04308A blades if you have a 42-inch mower listed in the compatibility notes and you’ve verified your spindle center is the 6-point star (5/8 inches). This is the kind of replacement that makes sense when you want better deck airflow and more reliable discharge—especially when mowing gets thick.
Skip it if your mower uses a different center blade shape or spindle pattern (the listing specifically warns against certain Cub Cadet arrangements like the 742-05177 “S” style). Also, if you haven’t checked the center hole/spindle pattern yet, it’s better to confirm first—because blade returns are rarely fun.
It’s a solid choice for homeowners who mow regularly and deal with yard conditions that can bog down discharge. If you only mow a perfectly uniform, dry lawn every time, you may not see dramatic improvements—but if your issue is clumping and slow discharge, this is aimed directly at that.
FAQ
Will this blade fit any 42-inch mower?
Not necessarily. The product targets specific 42-inch Troy-Bilt and Cub Cadet models and, more importantly, requires a 6-point star spindle (5/8 inches). If the spindle pattern doesn’t match, it won’t be the right fit.
What does “high-lift” mean for mowing?
High-lift blades are designed to create stronger airflow and lift, which can improve clippings removal into the bagging system or discharge chute and help prevent buildup under the deck.
Is the blade paint supposed to last?
The listing explains the painted edges help resist oxidation and protect hands during installation, but the paint will wear off as you mow.
Can I sharpen these blades?
The product states the blade can be sharpened to help maintain a clean, even cut for normal lawns.
What’s the biggest reason an install fails?
Most install issues come down to spindle/blade center mismatch. This blade is only compatible with the 6-point star (5/8 inches), so verify that pattern before ordering.