72531-VH7-000 & 72511-VH7-000 Mulching Blades Kit Compatible with 21" Deck Hon-da HRX217 HRX217K1 HRX217K2 HRX217K3 HRX217K4 Lawn Mowers，2 Pack

What It Is

This is a set of two mulching blades (part numbers 72531-VH7-000 and 72511-VH7-000) designed for 21-inch deck Honda HRX217 series mowers. They replace standard discharge blades to finely chop grass clippings and return them to the lawn as natural fertilizer.

Fitment & Compatibility

• Deck size: 21-inch cutting deck only.
• Models: Honda HRX217K1, K2, K3, K4 (also fits HRX217 base model). Confirm your mower’s model number on the underside of the seat or on the engine shroud.
• OEM equivalents: Replaces Honda genuine blades 72531-VH7-000 (left) and 72511-VH7-000 (right). These are aftermarket, not OEM.
• Measurements: Blade length is 21 inches, center hole diameter 7/8 inch, thickness ~0.2 inches. Measure your current blades to verify.
• Check: Ensure your mower has a mulching plug or baffle installed (sold separately if missing). These blades won’t work with a side-discharge chute.

Key Things to Know

• Installation: Easy swap with a socket wrench—remove the single center bolt on each blade. Use thread locker on bolts if not pre-applied.
• Quality: Aftermarket steel, not hardened like OEM. May dull faster on rough terrain or wet grass. Sharpening is possible but not recommended for optimal mulching.
• Common gotcha: These blades are directional—left and right are specific. The “L” and “R” stamps on the blades must match your mower’s spindle orientation (typically L on the left side from operator’s position).
• Mulching performance: Works best with dry grass. Wet or tall grass can clog the deck; consider raising the cutting height.

Should You Buy It

Buy this kit if you want a cost-effective mulching upgrade for your Honda HRX217 and don’t mind slightly faster wear compared to OEM blades. It’s ideal for homeowners who mow dry, thin grass and want the convenience of a two-pack at a lower price. Skip it if you mow heavy, wet lawns or need maximum durability for commercial use.