John Dee re M145476 M127673 M127500 UC22009 High-Lift Lawn Mower Blades-Compatible with John Dee re X300 X304 X320 GX255 GX325 LT180 LT190 48 inch Deck Lawn Mower(3pack)

What It Is

This is a set of three high-lift lawn mower blades designed for 48-inch cutting decks. High-lift blades create increased airflow for better grass clipping discharge, making them ideal for bagging or side-discharge mowing on John Deere X300, X304, X320, GX255, GX325, LT180, and LT190 tractors.

Fitment & Compatibility

Before buying, confirm your mower deck is exactly 48 inches (not 42 or 54). These blades are aftermarket replacements for OEM part numbers M145476, M127673, M127500, and UC22009. Measure your existing blade length (should be ~20.5 inches), center hole diameter (~1 inch), and thickness (~0.2 inches). Check that your deck uses three blades (some 48-inch decks use two). Also verify the blade shape—high-lift blades have a pronounced upward curve at the rear edge, which may not fit low-clearance decks or mulching covers.

Key Things to Know

• Installation difficulty: Easy if you have a socket wrench and blade removal tool. Lift the deck, block blades, remove the bolt, replace, and torque to 40-50 ft-lbs.
• Aftermarket quality: These are not OEM John Deere blades. Some users report slightly thinner steel or less balanced weight—check balance before installing by hanging on a nail.
• Common gotcha: High-lift blades require more engine power. On underpowered or worn engines, they can bog down in thick grass or cause excessive vibration.
• No mulching: These are for bagging or side-discharge only. Do not use with a mulching plug—they’ll throw clumps and strain the engine.

Should You Buy It

Buy these if you have a compatible John Deere with a 48-inch deck and need affordable replacements for frequent bagging or side-discharge mowing. They’re a solid value for the price, but skip them if you prefer OEM blades for durability or if your deck is used primarily for mulching—you’ll get better results with low-lift or mulching blades.