MaxPower 561143B 3 Blade Mulching Set for Many 60 in. Cut Exmark Mowers Replaces OEM #'s 103-6393, 103-6393-S and Windsor 50-2812, Red

What It Is

The MaxPower 561143B is a three-blade mulching set designed for 60-inch cut Exmark mower decks. It replaces OEM part numbers 103-6393, 103-6393-S, and Windsor 50-2812, and is intended for use on commercial zero-turn mowers where fine grass clipping mulching is the priority.

Fitment & Compatibility

Before buying, confirm the following:

• Deck size: Only fits 60-inch cut Exmark mowers. Measure your deck width—if it’s not exactly 60 inches, these blades won’t fit.
• Model check: Fits most Exmark Lazer Z, Lazer Z X-Series, Lazer Z Advantage, and Turf Tracer models with a 60-inch deck. Cross-reference your specific model with OEM #103-6393 or 103-6393-S.
• Blade dimensions: Each blade is approximately 20.5 inches long, 2.25 inches wide, with a 5/8-inch center hole and 0.25-inch offset. Measure your existing blades to verify.
• Aftermarket vs. OEM: MaxPower is an aftermarket brand. While it matches OEM specs, minor manufacturing tolerances can vary. Always test fit before full installation.

Key Things to Know

• Mulching performance: These blades have a higher lift and more aggressive curve than standard blades. They chop clippings finer but may reduce bagging efficiency. Best for mulching only.
• Installation difficulty: Easy if you have a blade removal tool and a torque wrench. Tighten to 70–90 ft-lbs. A common gotcha: mixing up blade orientation. The cutting edge must face the direction of rotation.
• Durability: Made from heat-treated steel. They hold an edge well but will dull faster on sandy or rocky soil. Expect to sharpen or replace after 25–30 hours of heavy use.
• Balance check: Out of the box, some users report slight imbalance. Spin-test each blade on a balancer before installing to avoid vibration and deck damage.

Should You Buy It

If you own a 60-inch Exmark and primarily mulch grass, this set is a solid value at $39—roughly half the cost of OEM blades. It’s not for bagging or side-discharge use, and you’ll need to verify fitment with your specific model. For budget-minded commercial operators or homeowners who maintain their own equipment, it’s a reliable, cost-effective choice.