GX21380 Medium Lift Blades for 54" Mower Deck, Compaitble with John Dee-re D170 E180 G110 S180 190C LA150 LA175 Craftsman Lawn Mower, Replace GY20679, GY20684, GY20686, 3 Pack

What It Is

This is a 3-pack of medium-lift replacement blades for 54-inch mower decks, designed for cutting grass on residential lawns. Medium lift improves airflow for better bagging and discharge compared to low-lift blades, while reducing power draw versus high-lift blades.

Fitment & Compatibility

Deck size: Must be a 54-inch mower deck—measure your deck’s cutting width before buying. Model fit: Confirmed for John Deere D170, E180, G110, S180, 190C, LA150, LA175, and Craftsman models with a 54-inch deck. OEM cross-reference: Replaces John Deere part numbers GY20679, GY20684, and GY20686. Measurements: Blade length is 20.5 inches, center hole diameter is 1 inch, and the drive pin holes are offset—verify these match your existing blades. Note: Not compatible with 48-inch or 60-inch decks, or zero-turn mowers unless specified.

Key Things to Know

• Quality: Made from heat-treated steel; medium-lift design balances bagging and mulching performance. At $31.99 for three, cost-effective compared to OEM equivalents.
• Installation difficulty: Moderate—requires a socket wrench and blade removal tool. Always disconnect spark plug and use a blade balancer after installation to prevent vibration.
• Common gotcha: The offset drive pin holes can be tricky to align on some spindles. Check your blade adapter orientation before tightening.
• Sharpness: Blades come unsharpened (as is typical for aftermarket)—you may need to sharpen them upon arrival for best cut quality.

Should You Buy It

Buy these if you have a 54-inch John Deere or Craftsman lawn tractor and want reliable, budget-friendly blade replacements for standard grass cutting. They are a solid alternative to OEM blades for residential use, but if you need maximum bagging or mulch performance, consider a dedicated high-lift or mulching blade set.