All HKS Intercooler Systems and upgrades utilize tube and fin intercooler core, as well as mandrel bent intake pipes, aluminum castings and fiberglass reinforced joint hoses. Where entire intercooler system upgrades are not feasible or effective. With this type of construction, relatively small core sizes can be used, thus reducing pressure loss and at the same time making intercooler upgrades feasible for a greater number of vehicles. Mandrel bent intercooler pipes ensure the least amount of inlet restriction possible throughout the entire intercooler system as compared to press bent pipes. The mandrel bending process produces bends that do not reduce the inner diameter of the pipe, thus maintaining the efficiency of a straight pipe.