72511-VE1-020 & 72531-VE2-020 Mower Blades Kit, Mulching Mower Blades for 21" Deck, Compatible with Hon-da HRB215 HRB216 HRB217 HRM215 HRR216 HRS216 HRT216 Lawn Mower

What It Is

This is a two-blade mulching kit (OEM part numbers 72511-VE1-020 and 72531-VE2-020) designed for 21-inch Honda walk-behind mowers. It replaces standard side-discharge blades with a curved, serrated design that chops clippings finer for nutrient recycling.

Fitment & Compatibility

Before buying, confirm your mower has a 21-inch cutting deck and is one of these Honda models: HRB215, HRB216, HRB217, HRM215, HRR216, HRS216, or HRT216. Do not assume fitment for newer Honda series (e.g., HRR217, HRX217) or non-Honda brands—these blades have a specific center hole pattern and offset. Measure your existing blade length (should be ~21 inches tip-to-tip) and check that the center hole diameter matches (typically 1 inch on these Honda models). This is an aftermarket set, not OEM Honda, so verify the blade thickness and sharpening angle match your original.

Key Things to Know

• Quality: Aftermarket steel; may require balancing before first use (cheap blade balancer tool recommended). Expect slightly shorter lifespan than OEM Honda blades.
• Installation: Moderate difficulty—need a socket wrench, torque wrench (recommended 30-40 ft-lbs), and blade removal tool. Always disconnect spark plug first.
• Gotcha: Mulching blades work best with a mulching plug installed in the deck. Without it, clippings may clump or discharge poorly. Also, avoid using on wet grass—clogs quickly.
• Performance: Produces finer clippings than standard blades, but won’t bag as effectively if you switch modes.

Should You Buy It

Buy this kit if you own a compatible 21-inch Honda mower from the listed series and want an affordable mulching upgrade for dry, normal-height grass. Skip it if you need OEM durability for commercial use, or if your mower isn’t on the compatibility list—fitment errors are common with aftermarket blades.