Grasscool 942-04308 942-04308A High Lift 6 Star Mower Blades for Troy Bilt Bronco Pony Mustang 42 inch Zero Turn Cub Cadet XT1-42 ZT1-42 42'' Rider Lawn Tractor Replace 942-04312

What It Is

The Grasscool 942-04308 is a set of three high-lift mower blades designed for 42-inch cutting decks on Troy-Bilt, Cub Cadet, and similar lawn tractors. These blades create stronger airflow to lift grass for a cleaner cut and better bagging, making them ideal for thick or damp grass.

Fitment & Compatibility

• Deck size: Only fits 42-inch decks; measure your deck width to confirm.
• Models: Direct replacement for Troy-Bilt Bronco, Pony, Mustang (42-inch zero-turn), Cub Cadet XT1-42, ZT1-42, and other 42-inch riders.
• OEM cross-reference: Replaces Cub Cadet/Troy-Bilt part numbers 942-04312, 942-04312A, 942-04308, 942-04308A. Check your blade’s stamped number.
• Measurements: Blade length 20.5 inches, center hole 1 inch (star-shaped), offset 0.75 inches. Verify these against your old blade.
• Not compatible with 46-inch or 54-inch decks, or non-star-center-hole spindles.

Key Things to Know

• High lift = better bagging, but more power draw. Works great in thick grass but may strain smaller engines if deck clogs.
• Star center hole is specific. Won’t fit round-hole spindles; confirm your deck uses a star-shaped mounting bolt.
• Installation difficulty: Easy—lift deck, remove bolt, swap blades, torque to 40–50 ft-lbs. Use a blade removal tool to prevent spinning.
• Sharp out of box. No need to sharpen before first use, but check balance if you hit a rock.

Should You Buy It

Buy these if you need reliable, affordable high-lift blades for a 42-inch Troy-Bilt or Cub Cadet tractor and prioritize bagging performance over mulching. They’re a solid upgrade over standard blades for spring/fall cleanup, but skip them if you mostly mulch or have a low-horsepower engine.