Turning Point Propellers 31431940 Express Mach4 4-Blade Stainless Steel Propeller 13x19 LH

The Turning Point Express Mach4 31431940 is a high-performance 4-blade stainless steel propeller engineered for 40-150hp outboards and sterndrives with 4.25" gearcases. Featuring an advanced swept cleaver design in proprietary TP17™ stainless steel, this left-hand rotation propeller delivers the acceleration and handling of a 4-blade with the top-end speed typically reserved for 3-blade props.

Key Features:

• 13" diameter x 19" pitch, 4-blade swept cleaver design with left-hand rotation
• Proprietary TP17™ stainless steel with 20% higher chromium content for superior corrosion resistance and durability
• Nearly 250% stronger than standard stainless steel propellers
• Unprecedented hole shot performance with exceptional lift and stern rise
• Maintains 3-blade top-end speed while providing 4-blade handling benefits
• Enhanced load-carrying capability - maintains speed when fully loaded with passengers and gear
• Superior cornering, ease of steering, and rough water stability
• 40% larger exhaust flow pathways reduce backpressure for improved horsepower
• Performance-tuned exhaust vents improve acceleration and provide best-in-class reverse thrust
• Ideal for watersports, sterndrive boats, tri-toons, bay boats, and applications requiring stern lift

The Express Mach4 lifts the hull higher out of the water, reducing wetted surface area and maintaining top-end speed even under heavy loads. The advanced swept cleaver blade design provides exceptional bite and stability in choppy conditions while delivering smooth, confident handling through turns. Compatible with Evinrude, Honda, Johnson, Mariner, Mercury, MerCruiser, Nissan, OMC, Parsun, Suzuki, Tohatsu, and Yamaha engines. Requires 500 series installation/hub kit (sold separately).