8TEN LawnRAZOR Blade for John Deere LT150 LT160 STX38 LX188 X300 X310 F525 GT275 38" Deck AM141040 (Mulching) 2 Pack

What It Is

The 8TEN LawnRAZOR Blade is a mulching blade designed for 38-inch cutting decks on John Deere lawn tractors. It replaces OEM part AM141040 and is intended to chop grass clippings into fine particles for nutrient recycling.

Fitment & Compatibility

• Deck size: Fits only 38-inch decks; measure your deck width before ordering.
• Compatible models: John Deere LT150, LT160, STX38, LX188, X300, X310, F525, GT275—verify your model in the owner’s manual.
• OEM replacement: Directly replaces John Deere AM141040; aftermarket fit is identical.
• Measurements: Blade length is 18.5 inches, center hole diameter is 0.625 inches (5/8”), and offset is 0.75 inches. Compare these to your current blade to confirm.

Key Things to Know

• Mulching only: Not for bagging or side-discharge; using it for other purposes will reduce performance.
• Installation: Moderate difficulty—requires a socket wrench and torque wrench (tighten to 40-50 ft-lbs). Use thread locker on bolts to prevent loosening.
• Balance: Blades come pre-balanced, but check with a balancer after sharpening to avoid vibration.
• Durability: Hardened steel lasts 1-2 seasons with regular mowing; sharpen every 10-15 hours for best cut.

Should You Buy It

If you own one of the listed John Deere models with a 38-inch deck and want a budget-friendly mulching upgrade for finer clippings, this is a solid choice. It’s cheaper than OEM but requires careful installation and is not for bagging. Best for homeowners who prioritize lawn health over convenience.