72531-VH7-000 & 72511-VH7-000 Lawn Mower Blade Set 21" for HRX217, HRX217K1, HRX217K2, HRX217K3, HRX217K4 Models MicroCut Twin Blades

What It Is

This is a two-blade MicroCut twin blade set (part numbers 72531-VH7-000 and 72511-VH7-000) designed for Honda HRX217 series mowers with a 21-inch deck. It delivers a finer, more consistent cut by using two smaller blades that spin opposite each other, ideal for mulching and bagging.

Fitment & Compatibility

• Deck size: Fits only 21-inch Honda HRX217 mowers. Measure your deck width to confirm.
• Model list: HRX217, HRX217K1, HRX217K2, HRX217K3, HRX217K4 (and their variants like VKA, VLA, etc.). Check your owner’s manual or existing blade part numbers.
• OEM vs aftermarket: These are OEM Honda blades—direct replacement, no adapters needed. Aftermarket copies may differ in thickness or balance.
• Measurements: Each blade is 13-1/2" long, 1-5/8" wide, with a 6-point star center hole. Verify your spindle matches this pattern.
• What to check: Confirm your mower has the twin-blade MicroCut system (not the single-blade Versamow). Look for two spindles under the deck.

Key Things to Know

• Cut quality: The twin-blade design produces a finer mulch and better bagging than single-blade setups, especially in thick grass.
• Installation: Moderate difficulty—you’ll need a socket wrench and torque wrench. Tighten bolts to 30-35 ft-lbs. Use thread locker if bolts are loose.
• Common gotcha: Do not mix these with single blades. The twin blades must be installed as a matched pair to avoid vibration and damage.
• Durability: OEM steel holds an edge well but dulls faster in sandy soil. Sharpen every 10-15 hours of use.

Should You Buy It

If you own a compatible HRX217 and want the best mulching and bagging performance Honda designed for that deck, this is the correct OEM set. Skip it if your mower has a single-blade system or you’re on a tight budget—aftermarket pairs cost less but may not match OEM balance.