Kibble White Black Diamond Exhaust valveHONDA 250 CRF 250 R (ME10) - 2008 - 2009Ref : KIBW00025A / 09260434

Valve Black Diamond™ - KIBBLEWHITE (Manufacturer Ref: 30-31166)

Black Diamond™ exhaust valve designed for demanding motocross engines. CNC machined from a monobloc forging in EV8 stainless steel, it combines lightweight and rigidity for reliable performance at high revs. The tulip profiles have been modelled using finite element analysis (F.E.A.) and validated on a computerised flow bench, ensuring optimised gas flow for discerning engineers and tuners.

• Usage: Exhaust, dedicated to motocross applications
• Material: EV8 stainless steel, monobloc forging
• Surface treatment: German process at 0.002" depth with a surface layer of 0.0002" — improves wear resistance and reduces friction, offering superior protection compared to chrome or electroplated nickel
• Stem: Black nitrided coating
• Angles and dimensions: Tulip angle 20° — Head diameter 1.024" / 26.00 mm
• Manufacturing: Made in the USA

Designed for modifications and replacements on machines such as the HONDA CRF 250 R (2008-2009), this Black Diamond™ valve is aimed at riders and mechanics seeking a high-precision machined engine part, suited to the demands of motocross.