HKS Adjustable Cam Gear – Mitsubishi Lancer EVO VII/VIII/IX22004 AM001 Using a super light duralumin (A2014) as its main material that the strength has increased by 50% and hardness by 30% (over previous version). This change in material has allowed the design change that has also allowed the unit to be substantially lighter (10% less load on RB engines) and increasing the engine reliability and power. DESCRIPTION Highly durable and lightweight pulley Using a super light duralumin (A2014) as its main material