Kibble White Black Diamond Inlet valveRef : KIBW00060A / 09263162

Valve Black Diamond™ by KIBBLEWHITE: an intake valve designed for demanding motocross and supermoto riders. CNC machined from a single-piece forging of EV8 stainless steel, this valve combines lightness and strength to withstand the revs and stresses of 250 cm³ engines like the YZ 250 F.

• Single-piece forged and CNC machined design for precise geometry and an optimised profile ensuring excellent flow.
• German surface treatment: depth of .002" with a .0002" layer for better wear resistance and reduced friction, offering superior protection compared to chrome or electrolytic nickel plating.
• Stem coated with black nitride for smooth guidance and increased durability.
• Developed through finite element analysis (F.E.A.) and validated on a computerised flow bench for controlled aerodynamic behaviour.
• Tulip angle: 18° — Application: intake — Head diameter: 31.00 mm (1.220").
• Made in the USA. Manufacturer reference: 80-80912.

Ideal for those rebuilding a cylinder head or looking for quality workshop parts, the Black Diamond™ is aimed at motocross and supermoto riders who want a durable, machined, and controlled valve to maintain proper intake flow and engine reliability.