72531-VH7-000 & 72511-VH7-000 Mower Blades Kit for 21" Deck, Mulching Blades Set Compatible with Hon-da HRX217 HRX217K1 HRX217K2 HRX217K3 HRX217K4 HRX537, 2 Pack

What It Is

This is a 2-pack of mulching blades (OEM part numbers 72531-VH7-000 and 72511-VH7-000) designed for 21-inch Honda HRX217 and HRX537 series mowers. They cut grass into fine clippings that decompose quickly, eliminating the need to bag.

Fitment & Compatibility

Before buying, confirm your mower has a 21-inch deck and is one of these Honda models: HRX217 (all K1–K4 variants), HRX217K1, K2, K3, K4, or HRX537. These are OEM-equivalent blades, not genuine Honda parts, so expect slight differences in finish or balance. Measure your existing blade length (should be ~21 inches tip to tip) and center hole diameter (typically 1 inch). Verify the blade’s offset and thickness match your current set—these are designed for the Honda “Versamow” system and will not fit other brands or non-HRX decks.

Key Things to Know

• Mulching performance depends on sharpness; these blades work best when you mow dry grass and avoid cutting more than 1/3 of the blade height at once.
• Installation difficulty is moderate—requires a socket wrench and blade removal tool (or a block of wood to lock the blade). Torque to 35–45 ft-lbs; over-tightening can strip the spindle.
• Common gotcha: These are sold as a set of two, but some Honda models use a single blade. Check your mower’s blade count before buying; if you only need one, this pack gives you a spare.
• Durability: Aftermarket blades may dull faster than OEM Honda blades, especially in sandy or rocky soil. Inspect after 10–15 hours of use.

Should You Buy It

If you own a Honda HRX217 or HRX537 and want a cost-effective mulching upgrade over bagging, this kit is a solid bet. It’s not for heavy-duty commercial use or rocky terrain, but for residential lawns with regular mowing, it delivers fine clippings and saves you from buying OEM replacements. Just verify your mower uses two blades—if it’s a single-blade model, you’ll have an extra for later.