Kibble White Black Diamond Exhaust valveRef : KIBW00175A / 09263380

Valve Black Diamond™ KIBBLEWHITE (manufacturer part no. 30-33616) — exhaust valve designed for demanding motocross riders. CNC machined from a single-piece EV8 stainless steel forging, this valve combines strength and lightness to withstand the high revs and repeated cycles typical of off-road riding. The optimised profiles ensure a clean and consistent exhaust flow, essential for responsive engine behaviour out of corners.

• Construction: single-piece EV8 stainless steel forging, precision CNC machining.
• Surface treatment: German process applied to a depth of 0.002" with a surface layer of 0.0002", enhancing wear resistance and reducing friction — superior protection compared to chrome or electroplated nickel.
• Design & control: profiles calculated using finite element analysis (F.E.A) and verified on a computerised flow bench for optimised gas passage.
• Stem: black Nitroneg coating for better glide and longevity.
• Specifications: tulip angle 18°, head diameter 1.024" (26.00 mm) — application: exhaust.
• Manufacturing: Made in USA.

Suitable for motocross bikes such as the HONDA CRF 250 RX (2020-2021) and CRF 250 R (2021), this Black Diamond™ valve is aimed at riders seeking reliability and durability without compromise. Ideal for engine preparation and rebuilds during servicing.