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Panther 75-8520 Lower Unit Security Lock Kit for Yamaha 25-Inch Shaft Single Engine Up to 150 HP

Manufacturer

Panther Drive Belts

<h3>About Panther Drive Belts</h3><p>Panther Drive Belts are a flagship product line from <strong>Timken Belts</strong>, a name long trusted in the power transmission industry. Marketed under the Carlisle Belts and Timken Belts umbrella, the Panther line was developed to answer the demand for synchronous belts that could exceed the limits of conventional high-torque designs — delivering more power, quieter operation, and a dramatically longer service life.</p><h3>Engineering Behind the Panther Belt</h3><p><a href="/6611-panther-drive-belts">Panther Drive Belts</a> are built around a suite of proprietary technologies that set them apart from standard synchronous belts. At the core is the <strong>Ultra-Cord&reg; Tensile Member</strong> — a high-strength cord engineered for low tension decay and exceptional dimensional stability over thousands of operating hours. The tooth facing uses graphite-loaded nylon, which is self-lubricating and wear resistant, enabling maintenance-free operation across a wide range of industrial applications.</p><p>The RPP&reg; tooth profile at the heart of the standard Panther belt delivers efficient power transfer, jump and shear resistance, and notably quiet operation. <a href="/6611-panther-drive-belts">Panther belts</a> are rated at 98–99% operating efficiency, making them one of the most energy-efficient belt drive solutions available for conveyors, blowers, packaging equipment, machine tools, and other industrial machinery.</p><h3>Panther XT – Extreme Torque Performance</h3><p>For applications demanding even greater power density, the <strong>Panther XT</strong> synchronous belt steps up as a super high-torque solution. Engineered with <strong>high-modulus carbon fiber cord</strong> for minimal stretch and maximum tensile strength, the Panther XT is designed as a direct drop-in replacement for high-torque polyurethane belts and even roller chain drives. Its advanced polymer compound is heat resistant up to 120&deg;C (248&deg;F) and oil resistant — making it well-suited for printing machinery, textile equipment, compressors, and packaging machinery operating in harsh environments.</p><h3>Motorcycle &amp; Powersports Drive Belts</h3><p>Beyond the industrial world, Panther Drive Belts have earned a loyal following in the powersports community. <strong>Panther rear drive belts</strong> for Harley-Davidson and custom motorcycle applications are constructed with a neoprene rubber backing that resists abrasive wear, reduces vibration compared to stock belts, and maximizes power transfer from engine to rear wheel. With straight-line tracking and quiet, maintenance-free operation, Panther motorcycle belts are a popular upgrade for both street riders and custom builders.</p><h3>Why Choose Panther Drive Belts?</h3><ul><li><strong>High Torque Capacity:</strong> Outperforms conventional synchronous belts in demanding drive applications</li><li><strong>Ultra-Cord&reg; Technology:</strong> Delivers superior tensile strength and long-term dimensional stability</li><li><strong>Self-Lubricating Teeth:</strong> Graphite-loaded nylon facing reduces wear and eliminates the need for belt dressing</li><li><strong>Energy Efficiency:</strong> 98–99% operating efficiency helps reduce energy consumption across the drive system</li><li><strong>Broad Application Range:</strong> From industrial conveyors and compressors to motorcycle final drives</li><li><strong>Long Shelf Life:</strong> With proper storage, Timken Belts products maintain quality for up to ten years</li></ul><p>Whether you are maintaining industrial machinery or upgrading a custom motorcycle build, <a href="/6611-panther-drive-belts">Panther Drive Belts</a> offer a proven combination of power, durability, and quiet operation that keeps critical systems running at their best.</p>

Part Number

75-8520
07/12/2036 9:43 PM
Sale Price

$141.59

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Panther 75-8520 Tamper-Resistant Lower Unit Lock Kit is a marine-grade security solution designed to protect your outboard motor's lower unit from theft. Engineered specifically for single-engine Yamaha outboards with a 25-inch shaft up to 150 HP, this lock kit replaces your existing lower unit bolts and nuts with highly secure, tamper-resistant hardware that is extremely difficult to defeat without the proprietary installation tool.

Key Features:

  • Tamper-Resistant Bolts and Nuts – Directly replace your factory lower unit hardware for a seamless, stock-looking installation
  • Unique Proprietary Tool Required – Both the bolt and nut require the included tamper-resistant tool to install or remove, preventing unauthorized access
  • Unique Pin Configuration – Each kit features a distinct pin pattern that deters even experienced thieves from picking or bypassing the lock
  • High-Strength Bell Washer – Prevents the use of clamps, pullers, or other improvised clamping devices to extract the bolt or nut
  • Marine-Grade Stainless Steel Construction – Built to withstand saltwater and harsh marine environments without rusting or corroding
  • Direct Fit for Yamaha 25" Short Shaft – Designed for single-engine applications rated up to 150 HP

Outboard motor lower units are a high-value theft target and can be removed in minutes by an experienced thief. The Panther Security Systems Lower Unit Lock Kit is a straightforward, effective deterrent that installs using your existing bolt holes, leaving no visible modification to your engine. It is an essential anti-theft upgrade for any boater looking to protect their investment.

Quick and easy! And you accepted ApplePay! :)

Great overall experience and fast shipping. Thank you.

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Easy checkout, rapid delivery, great product.

100% perfect all around, i will purchase from them again !!

They are BEAUTIFUL!!!

Very very fast delivery

Good product

Fast shipping

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