Kibblewhite Precision Exhaust Valve - 30-4222

Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless Steel. Black Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wear. Made in the U.S.A.. Must use Kibblewhite® Lightweight Valve Spring Kits when installing Black Diamond™ Valves..