Harken 2173 40mm Fly Block

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<p><strong>Harken 40mm Fly Block</strong> is engineered for high-performance sailing where strength, efficiency and minimal weight are critical. Designed with soft attachment for maximum versatility, this ultra-lightweight block delivers exceptional load capacity without adding unnecessary bulk, making it ideal for modern racing setups.</p>

<p>Built specifically for high-tech lines, the 40mm Fly Block features a one-piece titanium sheave with stainless steel ball bearings for ultra-smooth, low-friction performance under load. Its compact, low-aero design makes it perfect for foiling dinghies, sportboats and high-load control systems on Grand Prix race boats.</p>

<p>Commonly used in vang cascades, backstay systems and other high-load applications, this block offers outstanding strength-to-weight performance in demanding conditions.</p>

<p><strong>Specifications</strong></p>

<p><strong>Length:</strong> 58 mm / 2 5/16 in</p>
<p><strong>Weight:</strong> 62.2 g / 2.2 oz</p>
<p><strong>Sheave Diameter:</strong> 40 mm / 1 9/16 in</p>
<p><strong>Maximum Line Diameter:</strong> 9 mm / 11/32 in</p>
<p><strong>Maximum Working Load:</strong> 650 kg / 1435 lb</p>
<p><strong>Breaking Load:</strong> 1300 kg / 2870 lb</p>

<p><strong>Key Features</strong></p>

<ul>
<li>Soft-attach design for lightweight, versatile rigging</li>
<li>One-piece titanium sheave for maximum strength and reduced weight</li>
<li>Stainless steel ball bearings for smooth, low-friction performance</li>
<li>Composite fibre-reinforced sideplates for durability</li>
<li>High load capacity relative to compact size</li>
<li>Ideal for foiling dinghies, sportboats and Grand Prix race systems</li>
<li>Perfect for vang cascades, backstay systems and control lines</li>
<li>Low-profile, low-aero design for performance sailing</li>
<li>Designed for use with modern high-tech lines</li>
<li>Lashing line not included</li>
</ul>

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