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Martyr Anodes CMX11M Streamlined Shaft Anode - Imperial 4 Screw Mount

Manufacturer

Martyr Anodes

<h3>About Martyr Anodes</h3><p>When it comes to defending a vessel against galvanic corrosion, few names carry the authority of <strong>Martyr Anodes</strong>. A flagship brand within the <strong>CMP Group</strong>, Martyr has its roots in foundry operations that date back to the early 1900s in Vancouver, BC, growing from a local manufacturer into a globally recognized leader in marine cathodic protection. Today, the brand supplies boaters, commercial operators, and marine professionals worldwide with sacrificial anodes engineered to guard hulls, propellers, rudders, shafts, engines, and other submerged components from the relentless effects of corrosion.</p><h3>Three Alloys, Every Water Type</h3><p>What sets Martyr apart from competing anode manufacturers is its position as the only brand to offer all three protective alloys — zinc, aluminum, and magnesium — under a single product line. This matters because the correct alloy depends entirely on the water environment a vessel operates in. Zinc anodes are the classic choice for aggressive saltwater conditions, while aluminum anodes are preferred for saltwater and brackish environments, offering superior corrosion resistance with a reduced environmental footprint. Magnesium anodes are the go-to solution for freshwater use, delivering effective sacrificial protection without degrading too quickly. Whatever the operating environment, Martyr has an engineered solution to match.</p><h3>Military-Grade Manufacturing Standards</h3><p>Martyr does not cut corners on metallurgy. Every anode is pressure die-cast and manufactured to meet or exceed <strong>U.S. Military alloy specifications</strong>, using only high-purity metals. Each alloy batch is lab-tested with full certification and traceability available upon request. This rigorous quality management — operating under an ISO 9001 framework — ensures that each anode delivers consistent, long-lasting galvanic performance across a wide range of marine environments, from recreational pleasure craft to commercial vessels and naval applications.</p><h3>Anode Kits for Simplified Protection</h3><p>For boaters who want a complete, hassle-free maintenance solution, Martyr&rsquo;s <a href="/7452-martyr-anodes-anode-kits-200102">Anode Kits</a> offer pre-packaged sets engineered for specific engine models and boat types. Compatible with major marine engine brands including Yamaha, Mercury, Volvo, and MerCruiser, these kits take the guesswork out of corrosion protection and ensure every critical system receives optimal coverage in a single purchase.</p><h3>Sustainability at the Core</h3><p>Martyr and the CMP Group have made environmental stewardship a cornerstone of their mission. Traditional zinc anodes can contain cadmium, a metal that poses risks to aquatic ecosystems. Martyr actively advocates for the adoption of aluminum and magnesium alternatives that deliver equal or superior protection while minimizing harm to marine environments — embodying the brand&rsquo;s philosophy of &ldquo;Protect your boat, protect our waters.&rdquo; With over 1,000 anode types available and a catalog that fits virtually every major marine engine and boat model, Martyr remains one of the most comprehensive and trusted sources for marine corrosion protection in the world.</p>

Part Number

CMX11M
08/02/2036 2:58 PM
Sale Price

$96.33

4 left at this price

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Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Martyr CMX11M is a streamlined shaft anode designed to protect your vessel's propeller shaft from galvanic corrosion in saltwater and brackish water environments. This imperial-sized anode features a low-profile, hydrodynamic design that minimizes drag while providing reliable cathodic protection for your drivetrain components.

Key Features:

  • Four-screw mounting system for secure installation on propeller shafts
  • Streamlined profile reduces water resistance and maintains boat performance
  • Manufactured from high-quality magnesium alloy for optimal protection
  • Imperial sizing for compatibility with standard shaft diameters
  • Splits into two halves for easy installation without shaft removal
  • Precision machined to ensure proper fit and electrical contact

Martyr Anodes are manufactured to strict military specifications and are widely recognized as the premium choice for marine corrosion protection. Regular inspection and replacement of shaft anodes is essential for protecting expensive underwater metals from electrolysis damage.

Products specifications

Diameter

7.8"

Diameter: Interior

6" 3.5 7.8

Height

3.5"

shopping experience great, item ,well, won't know until I receive it.

easy order

Easy. Best price.

good stock good price

Online it didnt say anything about the tires being tube type which woulda been nice to know instead of finding out after i got the tires.

they have THE BEST PRICES!!!!!

Quick response to customer question and great customer service. Will be back to purchase from again

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