Using super light duralumin (A2014) as its main material that the strength has increased by 50% and hardness by 30% (over the 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.
The gear section is nickel plated for surface hardness increase (Hv: 350 → 500 (compared to an older version)) to withstand strengthened timing belts and any foreign objects that may get caught between the gear and belt.
As cam duration and other engine specifications change, the ideal valve timing point will also change. As both intake and exhaust cam duration increase, the overlap amounts can be adjusted for optimum performance. All HKS Camshafts come with recommended valve timing which can be achieved by using these sprockets in conjunction with HKS camshafts. These sprockets are compatible with standard camshafts.