Ford Focus RS MK3 Competition Intercooler KitCompetition Intercooler Kit for Ford Focus RS MK3 The high performance intercooler has the following core size (630mm x 215mm x 125mm = 16. 931cm) offering a 10% larger frontal area and 72% more charge air volume compared to the original intercooler. Our engineers have increased the intercooler core size and efficiency, as well as improved the end tank design to remove any OEM bottlenecks, resulting in increased flow and charge air cooling properties.