Maxpower 561813B 3-Blade Set for 54-Inch John Deere Rider, Replaces GX21380, GY20684, and GY20679

What It Is

This is a set of three replacement blades for John Deere 54-inch lawn tractor decks. Designed for mulching, bagging, and side-discharge cutting, they restore cutting performance on worn-out OEM blades.

Fitment & Compatibility

Before buying, verify your deck is exactly 54 inches wide. These blades replace John Deere OEM part numbers GX21380, GY20684, and GY20679. They fit most John Deere X300, X500, and X700 series tractors with 54-inch Edge, Accel Deep, or standard 7-Iron decks. The blade measures 18 inches long, 2.5 inches wide, with a 1-inch center hole and 0.5-inch offset. Check your current blade’s center hole diameter and offset—Maxpower uses the same specs. If your deck uses a different blade length or offset, these won’t fit.

Key Things to Know

• Material: Made from heat-treated steel with a boron edge for longer life than basic stamped blades. Not as tough as premium hardened alloys but good for residential use.
• Installation: Direct bolt-on—no modifications needed. Use a torque wrench to tighten blade bolts to 70–90 ft-lbs (check your tractor manual). Always lift the deck and block it safely before working.
• Common gotcha: These blades are symmetric (no left/right orientation), but double-check the lift wing direction matches your deck’s discharge side. If they’re installed upside down, cutting quality will suffer.
• Balancing: Blades come pre-balanced, but it’s smart to check with a blade balancer after installation. A slight imbalance causes vibration and uneven cut.

Should You Buy It

If you have a 54-inch John Deere lawn tractor with a worn or damaged blade set and want a reliable, affordable replacement that matches OEM dimensions, this is a solid choice. It’s not built for heavy commercial use, but for residential mowing, the price-to-performance ratio is excellent. Double-check your deck model and blade measurements before ordering, and you’ll save money over dealer-purchased OEM blades.