Ferrea Nissan RB25DET 34.12mm 5.97mm 86.7mm 15 Deg S-Flo Stk Comp Plus Intake Valve - Set of 12

The 1993-1997 Nissan Skyline Competition Plus Intake Valves by Ferrea are manufactured using special aerospace quality EV8-Z18 alloy for high tensile strength, ensuring proper grain flow through a two-step slow forging process, and are heat-treated and stress-relieved for molecular integrity. These valves feature avionics-quality hard chrome and a specially applied hard tip, with a design focused on optimum balance of flow, velocity, and efficiency, incorporating smoother radiuses and unique undercuts for superior performance and reliability. They are designed to counter the effects of increased engine EGT, which can decrease valve longevity and create metallurgical fatigue.