This Competition intercooler has the following core size (520mm x 210mm x 150mm / stepped = 13,572 cm³ ), providing a 85% larger frontal area and 90% more 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 rating and charge cooling properties. Wagner-Tuning “Competition” Core with high cooling performance and light weight (7,4kg) combined with cast aluminum optimized by CAD. Flow analyses and simulations were created to optimise the design for best possible Internal Airflow. This intercooler is the best choice when it comes to performance gains and low intake temperatures. A lot less pressure drop then OEM Intercooler. Anti Corrosion protective Coating with perfect thermal heat dissipating character. Optimal cooling with clearly more power. Kit is ready for installation, 100% perfect fit. Fitment is easy, replacing the OEM intercooler. All of our products undergo rigorous quality control. The EVO II Competition Intercooler Kit fits to: BMW Z4 35i E89 2009+ BMW Z4 35is E89 2010+ Kit comes with: Intercooler black Inlet Silicone hose , HD Outlet Silicone hose, HD 1 Set 12mm Stainless Steel Norma Clamps