MaxPower 561143XB Commercial Mulching Blade Set for 60" Cut Exmark, Windsor, Replaces OEM No. 103-6398, 103-6393, 51-2810 and Many Others, Red

What It Is

A set of three commercial-grade mulching blades for 60-inch cut zero-turn mowers (Exmark, Windsor, and others). Designed to chop clippings finer for better nutrient recycling and a cleaner deck finish.

Fitment & Compatibility

• Deck size must be exactly 60 inches – this set includes three blades, one per spindle.
• Check OEM part numbers: Replaces Exmark 103-6398, 103-6393, 103-2810, and Windsor equivalents. Verify your mower’s OEM blade number against the list before ordering.
• Measure your current blades: Each blade is 20.5 inches long, 2.25 inches wide, with a 0.25-inch thickness and a 5/8-inch center hole. If your existing blade dimensions differ significantly, these won’t fit.
• Not universal: Exmark and Windsor decks vary by year; confirm your deck model (e.g., Lazer Z, Turf Tracer) accepts these OEM replacements.

Key Things to Know

• Mulching, not bagging: These blades have a curved, wing-tip design for fine chopping. If you bag clippings, use a dedicated bagging blade instead.
• Installation tip: Tighten spindle bolts to 70–90 ft-lbs (check your manual). Use a blade removal tool; a socket and breaker bar are easier than trying with a wrench.
• Balance required: After installation, spin the blade by hand to check for wobble. Unbalanced blades cause vibration and damage spindles.
• Sharpness: They come sharp but need re-sharpening after 8–10 hours of heavy use. Dull blades tear grass, leaving brown tips.

Should You Buy It

Buy if you have a 60-inch Exmark or Windsor zero-turn, want better mulching than standard blades, and are comfortable with basic installation. Avoid if you need a bagging or lift blade, or if your deck uses a different blade length or hole size. At ~$60, it’s a solid value for commercial-grade performance on a residential budget.