Heavy-Duty Blades Compatible with Kubota K5647-34340, K5651-34340 for 60" Decks, Mower Blades Fits on ZD21, ZD25, ZD28, ZD321, ZD326, ZD331, ZG327, 3 Pack

What It Is

This 3-pack of heavy-duty blades fits 60-inch Kubota zero-turn mowers, designed for cutting grass on commercial or residential properties. They replace OEM parts K5647-34340 and K5651-34340, making them suitable for models like the ZD21, ZD25, ZD28, ZD321, ZD326, ZD331, and ZG327.

Fitment & Compatibility

Before buying, confirm your deck size is exactly 60 inches—these blades won’t fit smaller or larger decks. Verify your mower model matches the list above (ZD or ZG series). These are aftermarket blades, not OEM Kubota, so check that the spindle hole pattern and blade length (typically 20.5 inches) match your original blades. Measure your current blade’s center hole diameter and thickness (usually 1 inch and 0.25 inches) to ensure compatibility. Inspect your spindles for wear; damaged spindles can cause new blades to wobble.

Key Things to Know

• Quality: Heavy-duty steel, thicker than standard blades, lasts longer in rough terrain but may dull faster with sandy soil.
• Installation: Easy with basic tools (socket set, torque wrench). Torque blade bolts to 50-60 ft-lbs; overtightening can strip threads.
• Common gotchas: Check blade orientation—curved edge faces up. Replace all three at once for balanced cut. May require balancing if out-of-box wobble occurs.
• Lift: Designed for high lift, improving bagging and discharge, but can increase engine load on thick grass.

Should You Buy It

Buy these if you have a Kubota ZD21, ZD25, ZD28, ZD321, ZD326, ZD331, or ZG327 with a 60-inch deck and want a cost-effective, durable alternative to OEM blades. They’re ideal for busy lawns and commercial use, but skip if you need exact OEM specs or have a smaller deck.