Bularie 21" MicroCut Twin Mower Blade Kit — 2-Pack High-Carbon Steel Upper & Lower Blades for Honda 21-inch Decks

The Bularie 21 Inch MicroCut Twin Mower Blade Kit is a two-piece high-carbon steel replacement set that upgrades compatible Honda mowers from a single to an efficient twin-blade cutting system.

Designed as a direct-fit replacement for multiple Honda OEM part numbers, this 2-pack contains one lower and one upper MicroCut blade sized to work together inside a 21" deck. Built from durable high-carbon steel, the blades restore cutting performance, pull clippings into the deck, and finely chop grass for a neater finish. The kit is supplied with the exact blade shapes and sizes needed for a straightforward swap on many HR and HRM series push and self-propelled mowers.

Which mower models will these blades fit?

These MicroCut blades replace specific Honda OEM part numbers and are compatible with a wide range of Honda walk-behind and self-propelled lawn mowers. Verify the model and part number on your existing blade before ordering to ensure a proper match.

• Fits Honda HRB215 (including HRB215K1–K4), HRB216, HRB217 models
• Compatible with HRM215 (HRM215K1–K4) and HRR216 series
• Works with HRS216, HRT216, and HRZ216 series where the OEM numbers match
• Replaces OEM references such as 72511-VE1-020, 72531-VE2-020, and Oregon 91-517

How do these blades improve cutting performance?

The twin-blade MicroCut configuration converts a single-blade system into a dual cutting path that lifts and mulches clippings more effectively. That results in more even cuts and smaller grass fragments for a smoother lawn appearance without changing mower settings.

• Twin-blade design pulls clippings into the deck for finer mulching
• Sharp edges deliver a clean, uniform cut across the 21" deck
• High-carbon steel keeps edges longer between sharpenings
• Upper/lower blade pairing works together to reduce clumping

What tools and steps are needed to install the blades safely?

Installation is simple for anyone comfortable with basic mower maintenance, but observe safety precautions first. Use the correct socket to remove the blade bolts, keep the spark plug disconnected and fuel valve off, and handle blades with gloves to avoid cuts.

• Turn off engine, disconnect spark plug, and close fuel valve before starting
• Use a socket wrench to remove bolts and old blades
• Align the new lower and upper blades as original and torque bolts securely
• Wear protective gloves and verify blade clearance before mowing

What exactly is included in the package and what isn’t?

The kit includes two precision-cut MicroCut blades sized for a 21" deck: one lower blade and one upper blade. Fasteners and other accessories are not included, so reuse your existing bolts and washers or obtain replacements that match your mower’s specifications.

• Included: 1 x 72511-VE1-020 lower blade (20-8/9" x 2-1/4" LW)
• Included: 1 x 72531-VE2-020 upper blade (20-8/9" x 2-2/3" LW)
• Not included: mounting bolts, washers, or installation tools
• Compatible with OEM numbers listed for hassle-free replacement

Who this is for: This blade kit suits homeowners and lawn-care enthusiasts who own compatible Honda walk-behind mowers and want to restore or improve cutting quality without buying a new machine. It’s ideal for users seeking a direct-fit replacement that provides better mulching and a cleaner finish, and who are comfortable performing basic blade swaps with simple tools.