Oregon 6PK 91-509 Heavy Duty Blades for 60" Hustler Super Z, XR-7, Z

What It Is

A set of three heavy-duty 60-inch mulching blades for zero-turn mowers, designed for tough commercial cutting conditions. These replace OEM blades on Hustler Super Z, XR-7, and Z series mowers.

Fitment & Compatibility

Before buying, confirm your deck is exactly 60 inches (not 54" or 72"). These fit Hustler Super Z, XR-7, and Z models with a 60" deck—check your manual or existing blade part number. The Oregon 6PK 91-509 is an aftermarket replacement for OEM Hustler part numbers 603180, 603181, and 603182. Measure your blade length (should be ~20.5"), center hole diameter (5/8"), and spindle pattern (three-bolt, 2.5" bolt circle). They will not fit 48" or 52" decks, or other brands without verifying hole pattern.

Key Things to Buy

• Quality: Oregon is a top aftermarket brand; these are heat-treated and balanced for commercial use. Expect similar or longer life than OEM.
• Installation: Straightforward if you have a 5/8" socket and torque wrench. Torque bolts to 70-80 ft-lbs. Use thread locker if bolts are reused.
• Common gotcha: These are mulching blades—they have a higher lift and more cutting edge than standard blades. They will produce a finer clip but may require more engine power and can clog in wet grass.
• Set includes: Three blades, but no hardware. Reuse your existing bolts and washers unless worn.

Should You Buy It

If you own a 60" Hustler Super Z, XR-7, or Z and need a durable, cost-effective mulching blade for commercial mowing, this is a strong buy. It’s a direct OEM replacement at a lower price, with excellent reviews for cut quality and longevity. Skip it if you want standard lift/discharge blades or have a different deck size.