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Turning Point Propellers 11500300 MasterGuard Installation Kit 503

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

11500300
09/12/2036 5:44 AM
Sale Price

$47.11

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Turning Point Propellers MasterGuard 500 Series Installation Kit 503 is designed for marine engines with 4.25" or 4.75" gearcases, providing a revolutionary propeller hub system that saves boaters up to 33% on replacement propeller costs. This innovative kit allows you to purchase only the prop housing after a strike, while reusing the durable hub assembly.

Key Features:

  • Lifetime warranty coverage for engines under 200hp with aluminum or stainless steel props, and engines 200+hp with aluminum props
  • Industry-leading warranty with no restrictions except extreme commercial use
  • One-piece construction featuring marine bronze with over-molded glass-filled nylon for exceptional durability
  • Fully reusable after a prop strike event
  • Enhanced lower unit protection to safeguard your outboard or sterndrive
  • Warranty coverage even if the propeller is destroyed (consumer normal use only)
  • Compatible with both aluminum and stainless steel propellers depending on engine horsepower

The MasterGuard system represents a long-term investment in propeller technology, offering peace of mind with the only lifetime warranty of its kind in the marine industry. The robust marine bronze core combined with engineered nylon provides optimal strength and longevity for years of reliable performance.

Products specifications

Model

503

Type

Series 500

Item arrived quickly, pack well, no drama.

FAST AND PROFESSIONAL

As expected. Fast delivery

Search didn't pull up the tire I wanted to order. I had to sign out and use google search.

When I noticed my shift collar was wearing out, I got on the computer and found Autoplicity having one reasonably priced and ordered one. It came in no time at all and is in the paint shop as I type. I ordered it on Christmas and had it before New Years. That's fast. And it's a new one, not used.

quick and easy had everything I needed in stock

great site

Easy to navigate website, great selection and prices.

"Lowest price I could find on the internet. They do what they say. Shipped promptly with UPS tracking no. sent by email. Would recommend.<br>"

Good so far

very good pricing.

You had a part I couldn't find elsewhere

Quick and Easy!

Good web store front. Makes Parts Geek look like the trainwreck it is.

price was great

i like what ive been reading on the reviews

Smooth process thus far

Great experience! I placed my order on Sunday and my programmer arrived on Thursday - with ground shipping. I unpacked the programmer and it functioned exactly as I had hoped. I will definitely consider purchasing from Autoplicity again!

Quick and easy

Just placed order; seems ok so far

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