Turning Point Propellers 31432140 Express Mach4 13x21 4-Blade Stainless Steel Propeller Left-Hand

The Turning Point Express Mach4 31432140 is a premium 13-inch diameter by 21-inch pitch, 4-blade stainless steel propeller designed for 40-150hp outboard and sterndrive engines with 4.25-inch gearcases. This left-hand rotation propeller features a swept cleaver blade design that delivers exceptional hole shot, cornering ability, and load carrying capacity without sacrificing top-end speed.

Key Features:

• 13" diameter x 21" pitch, 4-blade swept cleaver design with left-hand rotation
• Manufactured from proprietary TP17™ stainless steel with 20% higher chromium content for superior corrosion resistance and durability
• Nearly 250% stronger and 5X more durable than standard marine-grade stainless steel
• Fits engines with 4.25" gearcases including Evinrude, Honda, Johnson, Mariner, Mercury, MerCruiser, Nissan, OMC, Parsun, Suzuki, Tohatsu, and Yamaha
• Provides exceptional stern lift, raising the hull higher out of the water for improved performance when loaded
• Tuned exhaust vents enhance hole shot performance and deliver superior reversibility
• 40% more exhaust flow area than competitive propellers reduces backpressure for increased horsepower
• Maintains 3-blade top-end speed while providing 4-blade handling and acceleration benefits
• Ideal for watersports, sterndrive boats, tri-toons, bay boats, and vessels requiring enhanced load capacity
• Requires 500 series installation/hub kit (sold separately)

The Express Mach4 series combines state-of-the-art swept cleaver blade geometry with performance-tuned pitch, rake angles, and exhaust vents to deliver unprecedented hole shot, handling, rough water stability, and ease of steering. This propeller excels in loaded conditions, minimizing speed loss compared to 3-blade designs when carrying extra passengers and gear.