Honda 72511-VA4-641 Blade (21)

What It Is

This is an OEM Honda 21-inch high-lift mulching blade (part # 72511-VA4-641) designed for select Honda HRC and HRS commercial walk-behind mowers. It uses a curved wing design to increase airflow for better bagging and mulching in tall or wet grass.

Fitment & Compatibility

• Deck size: Fits only 21-inch Honda mower decks. Measure your blade length from tip to tip; it must be exactly 21 inches.
• Center hole: 5-point star pattern, 1-inch diameter. Non-standard, so aftermarket alternatives are limited.
• Models confirmed fit: HRC215, HRC216, HRS216, HRS215 (all series variants). Check your mower’s model number on the deck or under the seat.
• OEM vs aftermarket: This is genuine Honda. Aftermarket replacements (e.g., Oregon or Stens) may use a different hole pattern or lack the high-lift wings—confirm compatibility before buying.
• What to check: Measure your old blade’s length, hole shape, and thickness (this blade is 0.105 inches thick). Inspect the blade adapter for wear; a worn adapter can cause wobble.

Key Things to Know

• Quality: Genuine Honda steel with heat-treated edge. Expect 2–3 seasons of residential use, less in sandy or rocky soil.
• Installation: Moderate difficulty. Requires a socket wrench and torque wrench (set to 40–50 ft-lbs). Use a blade lock or block the blade to prevent spinning.
• Common gotcha: The high-lift wings can cause vibration if the blade is not balanced after sharpening. Always rebalance or buy new if bent.
• Performance: Excellent for bagging leaves and mulching clippings. Not ideal for side-discharge-only mowers.

Should You Buy It

Buy this if you own a compatible Honda commercial mower and need OEM reliability for heavy mulching or bagging. It’s overkill for casual homeowners with standard Honda push mowers—an aftermarket blade will work fine. If you’re replacing a worn blade on an HRC/HRS, this is the exact match.