72511-VR8-M00&72531-VR8-M00 Mower Blade Kit Compatible with Honda HRN216 HRN216VKA HRN216PKA Lawn Mower, 21" Microcut Twin Blade Kit

What It Is

This is a genuine Honda Microcut twin blade kit (part numbers 72511-VR8-M00 and 72531-VR8-M00) designed for 21-inch Honda HRN216 series mowers. It uses two stacked blades that spin in opposite directions to create a finer, more consistent grass cut—ideal for homeowners who want a manicured lawn finish.

Fitment & Compatibility

Check your mower model: Fits Honda HRN216, HRN216VKA, and HRN216PKA mowers only. Not compatible with HRX, HRR, or other Honda series.
Deck size: 21-inch cutting deck. Measure your existing blade length—must be 21 inches.
OEM vs aftermarket: This is a genuine Honda part (not aftermarket), so no adapter or modification needed.
Blade measurements: Each blade is 10.5 inches long, 1.5 inches wide, with a 7-point star center hole. Confirm your deck uses the Microcut twin blade system (some HRN decks use a single blade).
What to check before buying:

• Look up your mower’s serial number on Honda’s site.
• Remove one existing blade and verify the star pattern matches.
• Ensure you have two blade bolts (often sold separately—check if yours are reusable).

Key Things to Buy

• Quality: Genuine Honda steel—holds edge well, but will dull faster than aftermarket hardened blades. Replace annually or after 25 hours of use.
• Installation: Moderate difficulty. You’ll need a socket wrench (typically 15mm or 13mm) and a blade removal tool or block of wood to stop the blade from spinning. Torque bolts to 30–35 ft-lbs.
• Common gotchas:
  • The two blades are identical but must be installed with the cutting edge facing the correct direction (arrows on blade point toward deck).
  • Don’t mix old and new bolts—use fresh ones if worn.
  • After installation, check blade balance (hang on a nail) to avoid vibration.

Should You Buy It

Buy this kit if you own a Honda HRN216 series mower and want the factory-specified Microcut performance for a clean, fine-cut lawn. It’s a direct OEM replacement with no guesswork. Skip it if you have a different Honda model or prefer a single-blade setup—this won’t fit or work correctly elsewhere.