Kibblewhite Precision Intake Valve Evo/Twin Cam

The Kibblewhite Precision Black Diamond™ Intake Valve for Evo and Twin Cam engines is CNC-machined from a one-piece forging of EV8 stainless steel. Treated with a proprietary multi-stage process, these valves offer reduced friction and superior resistance to corrosion and wear. The Black Diamond™ treatment, applied through a specialized German process, enhances durability and performance beyond chrome or nickel electrolysis plating. Designed using Finite Element Analysis and flow-tested for optimal performance, these lightweight and strong valves must be used with Kibblewhite® Lightweight Valve Spring Kits for proper installation.