72531-VH7-000 & 72511-VL0-S00 Mulching Blades Kit for Honda HRX217 21" Microcut Twin Blade Kit - Complete Maintenance Kit with Air Filter 17211-ZL8-023,Spark Plug,Bolts and Spacer

What It Is

This is a complete mulching blade kit for the Honda HRX217 series (21-inch MicroCut Twin Blade system), including replacement air filter, spark plug, bolts, and spacer. It’s designed for mulching grass clippings into fine particles to feed the lawn.

Fitment & Compatibility

• Deck size: Fits 21-inch Honda HRX217 mowers only (not HRX216, HRX217HYA, or other models).
• Part numbers: Blades are OEM Honda 72531-VH7-000 (left) and 72511-VL0-S00 (right). Air filter is 17211-ZL8-023. Spark plug is standard for Honda GCV190/200 engines.
• Check before buying: Verify your mower has the twin-blade MicroCut system (two small blades, not one long blade). Measure blade bolts to confirm 10mm-1.25 thread pitch. Ensure spacer is included (it’s critical for blade alignment).
• Aftermarket note: This kit uses OEM Honda parts, so fitment is guaranteed for the correct models. Aftermarket blades may not match the specific offset or balance.

Key Things to Know

• Installation difficulty: Moderate. Requires removing the old blades, cleaning the spindle, and torquing bolts to 30-35 ft-lbs. Do not overtighten.
• Spacer is essential: The spacer aligns the two blades correctly. Without it, blades can contact each other or the deck. If your kit lacks it, do not install.
• Mulching performance: These blades produce finer clippings than standard blades, but only if used with the mulching plug installed. Bagging or side-discharge reduces effectiveness.
• Maintenance interval: Replace blades annually or after 25 hours of use. Air filter and spark plug should be changed every season for optimal engine performance.

Should You Buy It

Buy this if you own a Honda HRX217 with the MicroCut system and want OEM-quality mulching blades plus a complete tune-up kit in one box. It’s a good value for those who prefer genuine parts and don’t want to hunt down separate components. Skip it if you need standard bagging blades or have a different mower model.