<p data-oe-version="2.0"><strong>Forged Pistons – 4320 Alloy – Alfa Romeo Twin Spark 8V (4 Units)</strong></p><p>
Precision-engineered forged pistons, manufactured from aerospace-grade <strong>4320 alloy</strong>, designed for high-performance and competition-spec <strong>Alfa Romeo Twin Spark</strong> engines. Set includes Pins and Rings.</p><p><br></p><p>The 4320 alloy (a low-alloy nickel-chromium-molybdenum steel) offers an exceptional combination of <strong>high tensile strength, fatigue resistance, and ductility</strong>, making it ideal for extreme internal combustion environments. These pistons are <strong>closed-die forged</strong>, enhancing grain structure alignment and increasing material density, resulting in superior mechanical integrity compared to cast alternatives.</p><p>Key engineering features include:</p><ul>
<li><p><strong>CNC-machined crown profiles</strong> for optimized combustion chamber dynamics</p></li>
<li><p><strong>Anti-detonation grooves</strong> and <strong>pressure accumulator channels</strong> to reduce ring flutter at high RPM</p></li>
<li><p><strong>Graphite-coated skirts</strong> for reduced friction and improved scuff resistance</p></li>
<li><p>Optimized <strong>compression height and weight</strong> for balanced rotating assembly</p></li>
<li><p>Designed with <strong>reinforced pin bosses</strong> for compatibility with high-strength piston pins</p></li>
</ul><p>These pistons are specifically developed for <strong>Alfa Romeo Twin Spark 8-valve engines</strong>, suitable for both naturally aspirated and forced induction builds. Custom compression ratios and bore sizes available upon request.</p><blockquote data-o-mail-quote-node="1" data-o-mail-quote="1">
<p>Recommended for use in motorsport, high-performance street builds, and engine configurations exceeding OE power levels.</p></blockquote>