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

Manufacturer

Turning Point Propellers

<h3>About Turning Point Propellers</h3><p>Founded in 1997 and headquartered in Jacksonville, Florida, <strong>Turning Point Propellers</strong> has spent more than 26 years doing one thing exceptionally well: engineering boat propellers that outperform the competition. From recreational day boaters to demanding offshore anglers, Turning Point has built a reputation as a go-to source for high-performance aluminum and stainless steel propellers designed to maximize speed, handling, and fuel efficiency on the water.</p><p>Turning Point's philosophy is straightforward — leverage cutting-edge metallurgy, advanced casting technologies, and aggressive blade geometry to produce the best-performing propeller in every category. The result is a lineup that covers everything from small outboards to high-horsepower sterndrive applications, with <a href="/7621-turning-point-propellers-propeller-parts-accessories-202388">propeller parts and accessories</a> rounding out the ecosystem for boaters who want a complete solution.</p><h3>Flagship Product Lines</h3><p>Two series anchor the Turning Point lineup. The <strong>Hustler Series</strong> aluminum propellers are manufactured using an exclusive squeeze-cast process that produces a tighter grain structure, stiffer blades, and resistance to flex — delivering stainless-steel-like performance at an aluminum price point. A proprietary five-step powder coating process adds a uniform, corrosion-resistant finish that stands up to years of saltwater exposure.</p><p>The <strong>Express Series</strong> stainless steel propellers push performance even further. Vented barrels allow exhaust gases to escape during acceleration, reducing water density around the blades and enabling faster hole shots. The Express Mach4's patented Dual Geometry blade design — featuring two different blade shapes in a single propeller — delivers unmatched acceleration and cornering without sacrificing top-end speed. <a href="/7621-turning-point-propellers-quicksilver-propellers-202408">Quicksilver-compatible propellers</a> from Turning Point give Mercury engine owners a compelling high-performance alternative, as the Express and Hustler lines are engineered to fit a broad range of Mercury outboards and sterndrives.</p><h3>MasterGuard Hub System</h3><p>One of Turning Point's most celebrated innovations is the <strong>MasterGuard Hub System</strong> — the first interchangeable hub system ever introduced to the propeller market. Using a patented one-piece design with glass-filled nylon over brass splines, it eliminates the failure points common in traditional sleeve-and-spline and pressed-rubber hub systems. A high-tech polymer cushion absorbs shift shock and impact energy, protecting the engine and drivetrain. MasterGuard hubs carry an industry-leading lifetime warranty and are cross-compatible with Mercury Flo-Torq II, Michigan Wheel XHS, and Solas Rubex hub systems, making them ideal for boaters looking to upgrade without replacing existing hardware.</p><h3>Broad Engine Compatibility</h3><p>Turning Point propellers are engineered to fit engines from virtually every major outboard and sterndrive manufacturer, including Yamaha, Honda, Suzuki, Evinrude, Johnson, OMC, Volvo Penta, Tohatsu, and Mercury. Whether you're shopping for <a href="/7621-turning-point-propellers-acme-propellers-201593">ACME-spline propellers</a> for an inboard or sterndrive application or seeking a direct Quicksilver replacement, Turning Point has a prop to match. Their 500 and 700 Series hub kits further simplify cross-compatibility across 4.25&quot; and 4.75&quot; gearcase sizes.</p><h3>Why Boaters Trust Turning Point</h3><ul><li>Squeeze-cast aluminum and TP17 stainless steel construction for maximum blade strength</li><li>Up to 46% more reverse thrust over competing propeller designs</li><li>Patented Dual Geometry blade design for 4-blade performance without speed loss</li><li>Industry-leading MasterGuard lifetime warranty on hub kits</li><li>Five-step Ultra-Coat powder coating for superior corrosion and impact resistance</li><li>Global distribution network with dealer and OEM partnerships worldwide</li></ul><p>Whether you're chasing top speed on a bass boat, pulling watersports tubes on a pontoon, or navigating offshore swells on a center console, Turning Point Propellers delivers the engineering depth and product breadth to keep your boat performing at its best.</p>

Part Number

31432140
07/12/2036 11:25 PM
Sale Price

$416.20

In Stock (8)

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Product Details

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.

Lowest price I could find. Great!

Nice site with good products and prices

Web site seems easy to navigate.

Quick and easy to order. Awaiting receipt of the product.

(Best price on the web...even though Google listed a shipping rate slightly lower than actual) My Autoplicity sales associate was great...very helpful, knowledgeable and professional...he even helped make up for the shipping difference by offering a small discount on the shipping. You guys have definitely earned my business....THANKS!

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