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Turning Point Propellers 31432340 Express Mach4 13x23 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 earning a reputation as one of the marine industry&apos;s most innovative propeller manufacturers. What started as a drive to engineer better-performing boat props has grown into a globally distributed brand trusted by recreational boaters, dealers, and OEM partners alike. The company&apos;s core philosophy is straightforward: <em>Run Faster. Pull Harder. Handle Better.</em></p><h3>A Legacy Built on Industry Firsts</h3><p>Turning Point&apos;s history reads like a timeline of marine propulsion innovation. The brand introduced the industry&apos;s first multi-manufacturer interchangeable hub propeller, the first full-color prop selection charts, and the first online Prop Wizard calculator to help boaters match the right prop to their engine. Later milestones include the first high-performance four-blade aluminum propeller and the first &ldquo;safer&rdquo; propeller design — the Aegis series — engineered to minimize harm to marine life at low boat speeds.</p><p>Today, Turning Point&apos;s lineup is organized around three flagship series: the <strong>Hustler</strong> aluminum propellers, the <strong>Express</strong> stainless steel propellers, and the <strong>Aegis</strong> safer-design series. Each is built to cover a wide spectrum of engine outputs, from small outboards in the 6 HP range up to powerplants exceeding 300 HP, and fits vessels ranging from bay boats and pontoons to tritoons and sterndrive applications.</p><h3>Engineering That Sets Turning Point Apart</h3><p>A key differentiator in Turning Point&apos;s manufacturing process is its exclusive squeeze-cast method for aluminum propellers. This technique virtually eliminates the voids and air pockets that weaken conventionally cast props, producing a tighter grain structure and stiffer blades that resist flex — translating directly into more efficient power transfer. Stainless steel Express props feature advanced pitch-line and rake-line cupping along with vented barrels that allow exhaust gases to escape during acceleration, improving hole-shot performance. Turning Point also applies a proprietary Ultracoat powder-coat finish to all aluminum propellers for a corrosion-resistant, high-gloss appearance that holds up in harsh saltwater and freshwater environments alike.</p><h3>Propellers for Every Boater</h3><p>The heart of the Turning Point catalog is its broad selection of <a href="/200673-propellers-turning-point-propellers-7621">Turning Point Propellers</a> — three- and four-blade designs in both aluminum and stainless steel, available in right- and left-hand rotation to suit virtually any outboard or sterndrive configuration. Whether you&apos;re looking to maximize top speed, improve fuel economy on long cruises, or gain better low-end pulling power for watersports, there is a Turning Point prop engineered for that purpose.</p><p>Equally important to a proper propeller installation is the hardware that supports it. Turning Point&apos;s line of <a href="/7621-turning-point-propellers-propeller-parts-accessories-200817">Propeller Parts &amp; Accessories</a> — including their patented MasterGuard hub kits — rounds out the system. The MasterGuard hub features a one-piece glass-filled nylon over brass spline design that eliminates the failures common in older multi-part sleeve-and-spline systems, while protecting engines and drives from shift shock and impact loads. Crucially, these hub kits are covered by the industry&apos;s only lifetime warranty and are compatible with Mercury Flo-Torq II, Michigan Wheel XHS, and Solas Rubex hub kit systems.</p><h3>Why Boaters Choose Turning Point</h3><ul style="list-style:disc"><li>Over 26 years of dedicated marine propeller engineering and manufacturing</li><li>Exclusive squeeze-cast aluminum process for stronger, flex-resistant blades</li><li>Industry-first interchangeable MasterGuard hub system with a lifetime warranty</li><li>Wide compatibility across major outboard and sterndrive engine brands</li><li>Prop Wizard tool to help boaters select the optimal pitch and diameter</li><li>Vertically integrated manufacturing from raw ingot to finished product</li></ul>

Part Number

31432340
09/12/2036 7:25 AM
Sale Price

$442.28

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Product Details

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.

So Far so good.

So far so good

Good so far

Quick and less expensive than local parts stores.

Why didn't I get the 20% Shipping Discount?

Easy I reckon

I chose 2nd day air, and on every subsequent screen I had to reselect it every time. I think a total of 4 times I continued to select 2nd day air.

Good very good

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