Turning Point Propellers 31432340 Express Mach4 13x23 4-Blade Stainless Steel Propeller Left-Hand

The Turning Point Express Mach4 is a high-performance stainless steel propeller designed to deliver exceptional acceleration, handling, and top-end speed for outboards and sterndrives from 40-150hp. Featuring an advanced swept cleaver design with four blades, this 13-inch diameter, 23-pitch left-hand rotation propeller combines the hole shot and load-carrying capabilities of a four-blade prop with the top-end speed typically reserved for three-blade designs.

Key Features:

• Proprietary TP17 stainless steel construction—20% higher chromium content for superior corrosion resistance and nearly 250% stronger than standard stainless steel
• Swept cleaver blade design provides unprecedented hole shot, lift, and rough water stability without sacrificing top-end speed
• Four-blade configuration lifts the hull higher out of the water, maintaining speed when fully loaded with passengers and gear
• Large free-flowing exhaust ports with 40% more exhaust flow area than competitive props reduce backpressure for increased horsepower
• Performance-tuned exhaust vents improve hole shot and deliver best-in-class reversibility with up to 46% more reverse thrust
• Enhanced cornering ability and ease of steering make it ideal for watersports, bay boats, tri-toons, and sterndrive vessels
• Left-hand rotation for specific marine applications
• Fits 4.25-inch gearcase applications including Evinrude, Honda, Johnson, Mariner, Mercury, MerCruiser, Nissan, OMC, Parsun, Suzuki, Tohatsu, and Yamaha outboards and sterndrives
• Requires 500 series installation/hub kit (sold separately)

The Express Mach4 represents a significant upgrade over older stainless steel propeller designs from previous decades, delivering modern swept cleaver technology that outperforms most newer props including five-blade ski propellers. Whether you're pulling skiers, navigating choppy water, or carrying heavy loads, this propeller delivers the versatility and performance demanded by serious boaters.