Black Max 3 Blade Propeller 14.25 X 21 Beefs Up Your Outboard Heavy Duty Aluminum Prop With Solid Mercalloy Alloy For High Thrust Fits Mercury Mariner 90 To 300HP FourStroke TwoStroke Outboards

High-Thrust Black Max 3-Blade Prop for Mercury 90-300 HP
✔️ 14.25 x 21 aluminum prop with Flo-Torq II hub kit included

The Black Max three-blade aluminum prop is built for Mercury, Mariner, and MerCruiser outboards and stern drives, delivering solid mid-range thrust and strong acceleration. This heavy-duty prop handles 90-300 HP engines and is ideal for bass boats, runabouts, and small offshore craft looking for reliable performance.

✅ 14.25 x 21 aluminum prop
✅ Mercalloy aluminum alloy for strength and ductility
✅ Flo-Torq II hub kit included
✅ Phantom Black enamel finish resists corrosion
✅ Right-hand rotation only

💡 What is a common use for a propeller on outboard motors?

Handy answer:

- Increases thrust for quicker planing and acceleration - Improves midrange handling on Mercury/Mariner 90-300 HP - Flo-Torq II hub kit helps protect drivetrain