
Valve White Diamond® – KIBBLEWHITE (manufacturer part no: 80-80218H)
Machined exhaust valve for demanding cross, enduro, and quad engines. The White Diamond® Valve is CNC machined from a forged monobloc piece in EV8 stainless steel or Inconel‑751, then electroplated by anode at 360º for a uniform hard chrome coating. Designed and manufactured in the United States, it is aimed at riders looking for a high-precision replacement part for their cylinder head.
Practical for restoring an engine subjected to high temperatures and sustained revs, this valve fits into competition and leisure applications. Common application examples: YAMAHA YZ 450 F (2017), YAMAHA YZ 450 F 60th Anniversary (2016), and YAMAHA YFZ 450 R (2016).