ZTF 72531-VH7-000 & 72511-VL0-S00 Mulching Blades Kit for Honda HRX217/HRR216 21" Microcut Twin Blade Kit - Complete Maintenance Kit with Air Filter 17211-Z8B-901,Spark Plug,Bolts and Spacer

What It Is

This is a complete maintenance kit for Honda HRX217 and HRR216 21-inch walk-behind mowers. It includes a pair of mulching blades (OEM equivalents 72531-VH7-000 and 72511-VL0-S00), a Microcut twin blade system, an air filter (17211-Z8B-901), a spark plug, mounting bolts, and a blade spacer—everything needed for a season’s tune-up.

Fitment & Compatibility

• Deck size: 21-inch cutting deck only. Does not fit 20-inch or 22-inch Honda decks.
• Mower models: HRX217 (all variants: VKA, VLA, TDA, etc.) and HRR216 (all variants: VKA, VLA, etc.). Not compatible with HRC, HRS, or HRM series.
• OEM reference: Blades are direct replacements for Honda part numbers 72531-VH7-000 (left) and 72511-VL0-S00 (right). Air filter replaces 17211-Z8B-901.
• Check before buying: Measure your existing blade length (must be 21 inches overall for the pair). Verify your mower uses the “Microcut” twin-blade system—older HRX models with a single blade won’t accept this kit. Also confirm your spark plug type; this kit includes a standard NGK BPR6ES or equivalent, but if your HRX requires a resistor plug, verify compatibility.

Key Things to Know

• Quality: Blades are OEM-grade steel from a reputable aftermarket supplier—sharp out of the box and hold edge well. The air filter and spark plug are standard-grade replacements, not premium.
• Installation difficulty: Moderate. You must remove the mower deck, swap both blades, and install the spacer correctly. The spacer is critical for the twin-blade system to align properly; missing it will cause vibration and poor cut.
• Common gotchas: The kit includes bolts, but they are standard 5/16-24 thread—use a torque wrench to 40-50 ft-lbs. Over-tightening can strip the blade adapter. Also, the air filter may be slightly tight in the housing; it’s normal, don’t force it.
• Maintenance interval: Replace blades every 25 hours or when cut quality drops. Change air filter and spark plug annually.

Should You Buy It

If you own a Honda HRX217 or HRR216 with the Microcut twin-blade system and want a single-box solution for a full tune-up, this kit is a solid value at $39.99. It’s perfect for DIY owners who want OEM-grade parts without buying separately. Skip it if your mower uses a single blade or if you need a premium air filter (e.g., for heavy dust).