
Valve Black Diamond™ by KIBBLEWHITE — manufacturer reference 30-30223. Exhaust valve dedicated to Cross machines, CNC machined from a monoblock forging in EV8 stainless steel to combine lightness and mechanical strength in extreme conditions.
Designed for motocross cylinder heads, the Black Diamond™ is aimed at riders looking for machined and durable valve parts for their CRF 450 R (PE05) 2006‑2008 and other compatible machines. Note: installation requires the use of the appropriate Kibblewhite spring kit. Professional installation is recommended for adjusting clearances and verifying fit on the seat and guide.