HKS Fuel Rail Upgrade kits are high-performance fuel delivery units that are designed to properly supply the additional fuel needed for high boost/performance applications. HKS Fuel Rail Upgrade kits...

HKS valve springs are stiffer springs specifically designed for use with HKS camshafts. As valve train dynamics change with the use of high performance cam profiles and greater lift, stiffer valve...

HKS Fuel Rail Upgrade kits are high-performance fuel delivery units that are designed to properly supply the additional fuel needed for high boost/performance applications. HKS Fuel Rail Upgrade kits...

With over twenty years of developing the industries highest quality performance headers and exhaust products for dozens of America’s finest automotive and truck applications, we have also made...

HKS also offers an adjustable fuel pressure regulator that can be integrated into a factory or upgraded fuel system. The HKS Fuel Pressure Regulator offers the ability to maintain the necessary fuel...