<p data-oe-version="2.0">Certainly. Here's the technical product description rephrased specifically for <strong>forged 4320 alloy pistons</strong> designed for <strong>Alfa Romeo NORD engines</strong>:</p><p><strong>Forged Pistons – 4320 Alloy – Alfa Romeo NORD Engines</strong></p><p>
High-performance <strong>forged pistons</strong>, precision-manufactured from <strong>4320 nickel-chromium-molybdenum alloy</strong>, specifically engineered for <strong>Alfa Romeo NORD-series twin cam engines</strong> (1300, 1600, 1750, and 2000).</p><p>The use of <strong>4320 alloy</strong>, renowned for its <strong>exceptional fatigue strength, toughness, and thermal stability</strong>, ensures these pistons withstand the extreme loads and elevated temperatures typical of racing and high-output applications. <strong>Closed-die forging</strong> improves structural uniformity and durability by aligning the grain flow along stress paths, significantly increasing resistance to failure under cyclic loading.</p><h3>Key technical features:</h3><ul>
<li><p><strong>CNC-machined crowns</strong> tailored to the hemispherical Alfa combustion chamber</p></li>
<li><p><strong>Reinforced pin bosses</strong> for compatibility with heavy-duty piston pins</p></li>
<li><p><strong>Pressure accumulator grooves</strong> to stabilize ring pack performance at high RPM</p></li>
<li><p><strong>Anti-detonation bands</strong> to mitigate pre-ignition in aggressive tune setups</p></li>
<li><p><strong>Graphite or moly skirt coating</strong> to reduce drag and prevent cold-start scuffing</p></li>
<li><p>Available with <strong>custom compression ratios</strong> and <strong>bore sizes</strong> (Ø84–Ø85.5mm)</p></li>
</ul><p>Designed for <strong>naturally aspirated and forced induction NORD engines</strong>, including 105/115-series cars. These pistons are ideal for builds targeting <strong>increased displacement, higher compression, or competitive endurance performance</strong>.</p><blockquote data-o-mail-quote-node="1" data-o-mail-quote="1">
<p>Suitable for 1300, 1600, 1750, and 2000 NORD variants.</p><p>
For precise fitment, match with corresponding liners and rod length.</p>
</blockquote><p>Let me know if you’d like this converted into a spec sheet format or adapted for a catalog/e-commerce description layout.</p>