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The 4.0-litre 9A2 Evo flat-six provides a remarkably robust foundation, but building a dedicated motorsport engine requires fortified internal components. Strengthening the rotating assembly with Forged Pistons and Forged Connecting Rods provides the durability necessary to withstand intense cylinder pressures. Securing these components requires Uprated Engine Bolts (ARP) alongside low-friction Performance Bearings (Conrod & Mains). For owners looking to maximise volumetric efficiency, Performance Camshafts improve cylinder head airflow. We also supply Misc Engine Parts, covering the essential seals and gaskets for a complete engine rebuild.