72531-VH7-000 & 72511-VH7-000 Lawn Mower Blade Kit,21 inch Mulching Blades Compatible with Honda HRX217, HRX217K1, HRX217K2, HRX217K3, HRX217K4

What It Is

This is a set of two 21-inch mulching blades (OEM part numbers 72531-VH7-000 and 72511-VH7-000) designed specifically for Honda HRX217 series mowers. They recycle clippings into fine mulch for lawn nutrition rather than bagging or side-discharging.

Fitment & Compatibility

Before buying, verify:

• Deck size: 21-inch cutting width only (not for 20” or 22” decks)
• Model series: HRX217, HRX217K1, K2, K3, K4 (check your model tag under the seat or on the deck)
• OEM vs aftermarket: These are genuine Honda OEM blades, not third-party. They match the factory blade profile and mounting pattern exactly.
• Measurement: 21” tip-to-tip, oval center hole with two locating pins (not universal). Measure your current blade length and center hole shape to confirm.

Key Things to Know

• Installation tip: Use a torque wrench—tighten blade bolts to 30-35 ft-lbs. Hand-tightening can loosen during operation.
• Sharpening: These are hardened steel; resharpening is possible but reduces blade life. Replace when nicked or bent.
• Mulching performance: Works best with the HRX’s “Versamow” system—ensure the mulch plug is installed and grass is dry for fine clippings.
• Common gotcha: Do not use with bagging or discharge attachments unless you switch to standard blades; mulching blades rely on a closed deck.

Should You Buy It

Buy this if you own an HRX217 and want factory-spec mulching performance without aftermarket fitment guesswork. It’s ideal for those who mow weekly, prefer nutrient recycling, and value OEM durability over cheaper generic options.