72511-VR8-M00 & 72531-VR8-M00 21" Mulching Blades Set for Compatible with Hon da HRB215 HRB216 HRB217 HRM215 HRR216 HRS216 HRT216, Push and Propelled Lawn Mower 2 Pack

What It Is

This is a 2-pack of 21-inch mulching blades (OEM part numbers 72511-VR8-M00 and 72531-VR8-M00) designed for specific Honda push and self-propelled mowers. They cut grass into fine clippings that decompose quickly, eliminating the need for bagging.

Fitment & Compatibility

Before buying, confirm your mower deck is 21 inches and your model is in this list: HRB215, HRB216, HRB217, HRM215, HRR216, HRS216, HRT216 (both push and propelled variants). These are aftermarket replacements for OEM Honda blades—check that your existing blades have a center hole diameter of 20mm and a 3-point star pattern for mounting. Measure your current blade length (center hole to tip) to ensure it matches 21 inches. Not compatible with 20-inch or 22-inch decks, or non-Honda models.

Key Things to Know

• Quality: Aftermarket steel, generally durable but may dull faster than OEM Honda blades—expect replacement every 1-2 seasons depending on usage.
• Installation: Easy with a socket wrench; use a blade removal tool to lock the spindle. Torque bolts to 35-40 ft-lbs. Ensure blades are installed with the cutting edge facing the direction of rotation (upward curve toward deck).
• Common gotcha: The 2-pack includes two identical blades—some Honda models use a different blade for the left/right side. Verify your mower requires two identical mulching blades (most listed models do). If not, return before installing.
• Balance: Aftermarket blades may be slightly unbalanced out of the box. Test by balancing on a screwdriver; file the heavy side if needed to avoid vibration.

Should You Buy It

Buy this if you own a compatible 21-inch Honda mower and want an affordable mulching blade set that works well for regular lawn care. It’s a solid value for the price, but if you prefer longer-lasting sharpness and perfect balance, stick with OEM Honda blades (about $10-15 more per pack).