IDEASURE Mulching Mower Blades Kit for 21-inch Deck — Upper 72531 & Lower 72511, Thick-Steel Direct-Fit for Honda

IDEASURE replacement mulching blades 72531-VE2-020 (upper) and 72511-VE1-020 (lower) are a two-blade kit engineered to restore clean, efficient cutting on 21-inch mower decks compatible with many Honda walk-behind models.

These blades are precision-formed from a single piece of thick steel to deliver longer life and steady performance. The kit includes the upper mulching blade (72531-VE2-020) and the lower high-lift blade (72511-VE1-020), sized for a 21" deck (20-7/8" length). Whether you need to replace worn edges or upgrade for better mulch distribution, these blades are built to match the fit and action of specific Honda models — check fitment details before ordering.

Which Honda mowers are these blades compatible with?

These blades were designed as direct-fit replacements for various Honda push mower models. Compatibility covers multiple HRB, HRM, HRR, HRS, HRT, and HRZ series variants; always verify the original part numbers or measure your deck to confirm.

• Direct replacements for part numbers 72531-VE2-020 (upper) and 72511-VE1-020 (lower).
• Confirmed fit for many HRB215, HRB216, HRB217 model variations and HRM215.
• Also fits a range of HRR216, HRS216, HRT216 and select HRZ216 submodels — see your mower’s manual or parts label.

How do these blades improve cutting and mulching?

The upper mulching blade and lower high-lift blade work together to lift grass, re-cut clippings, and distribute fine mulch back into the lawn. The matched pair recreates the original airflow and cutting geometry for more even results than mismatched replacements.

• High-lift lower blade promotes strong airflow and collection/mulching action.
• Upper mulching blade is shaped to re-chop clippings for finer mulch.
• Matched lengths (20-7/8") maintain deck balance and consistent rotor performance.

What are the construction and dimensions of each blade?

Both blades are stamped from a single sheet of thick steel to reduce flex and resist premature wear. Dimensions are tailored to fit a 21" deck so you get proper clearance and torque for typical walk-behind mower spindles.

• Upper mulching blade 72531-VE2-020: length 20-7/8", width 2-5/8".
• Lower high-lift blade 72511-VE1-020: length 20-7/8", width 2-1/4".
• Sold as a two-piece kit: 1 × upper blade and 1 × lower blade per package.

How should I install and maintain these blades for best results?

Replace blades on a level surface with the engine off and spark plug disconnected. Match blade orientation to your mower’s manual, torque mounting hardware to specification, and keep edges sharp. Balanced blades reduce vibration and extend spindle and deck life.

• Inspect blade center hole and mounting hardware for wear before installation.
• Sharpen periodically and replace if bent, cracked, or excessively worn.
• Balance blades after sharpening to avoid vibration and uneven cut.

Who is this for: This IDEASURE blade kit is aimed at homeowners and maintenance professionals who own compatible 21" Honda walk-behind mowers and want a reliable pair of replacement blades that restore original cutting geometry and mulching performance. Choose this set if you need OEM-style fit, thicker steel construction, and the matched upper/lower blade pairing for improved mulch and even cuts across varied grass conditions.