70000-00605 High Lift Mower Blades for 54" Deck, Compatible with Ku-bota RCK54-18Z RC54-24B RC54-G20 Lawn Tractor, Replaces 70000-25004 76529-34330 K5615-34330, 3 Pack

What It Is

This is a 3-pack of high-lift mower blades designed for 54-inch Kubota decks, optimized for superior grass lifting and bagging performance. They are intended for lawn tractors used on residential or commercial turf where clean cut and efficient debris discharge are priorities.

Fitment & Compatibility

Before buying, verify your deck model—these fit Kubota RCK54-18Z, RC54-24B, and RC54-G20 decks only. Measure your existing blade length (should be ~18.5 inches) and center hole diameter (typically 1 inch). These replace OEM part numbers 70000-25004, 76529-34330, and K5615-34330. They are aftermarket blades, not genuine Kubota, so confirm your deck’s spindle bolt pattern matches (usually 5-point star or 6-point). Check that your deck has no obstructions (e.g., anti-scalp rollers) that could interfere with the high-lift design.

Key Things to Know

• Lift vs. OEM: High-lift blades create more airflow for better bagging and side discharge, but may require more engine power and can wear faster on sandy or dusty lawns.
• Installation: Sharpening is not needed out of the box. Use a torque wrench to tighten spindle bolts to manufacturer spec (typically 50–70 ft-lbs). Mark blade orientation before removal.
• Balance: After installation, check blade balance on a balancer—unbalanced blades cause vibration and deck damage.
• Deck clearance: High-lift blades sit slightly lower in the deck; ensure your deck height adjustment range still meets your mowing needs.

Should You Buy It

If you own a compatible Kubota 54-inch deck and struggle with clumping or poor bagging, these blades are a solid upgrade for the price. They are not for mulching or low-lift applications. For $48, they offer good value versus OEM, but be prepared for a slight power draw and more frequent sharpening.