VALVE INTAKE CENTRE YZF400/426, KIBBLEWHITE 80-8056H, YZF400/426 98-02 YAMAHA

This White Diamond® Stainless Steel Intake Valve is designed for the center intake position on Yamaha® WR™ and YZ™ 400/426 models from 1998 to 2002. Precision CNC machined from a one-piece forging of EV8 Stainless Steel, it offers exceptional heat and corrosion resistance. Finished with high-grade hard chrome via a 360-degree anode process, this valve delivers durability and consistent performance. Engineered with flow-optimised profiles using Finite Element Analysis, it is suitable for high-demand engine applications.

Features

• CNC machined from a one-piece forging of EV8 Stainless Steel

• High resistance to heat and corrosion

• Hard chrome finish applied with a 360-degree anode for uniform coating

• Designed using Finite Element Analysis (FEA)

• Flow-optimised profiles tested on a computerised flow bench

• Recommended for use with Kibblewhite valve spring kits (Part No. 65-724)

Specifications

• Head Diameter: 27.00mm / 1.063″

• Stem Diameter: 4.50mm / 0.1765″

• Tulip Angle: 15 degrees

• Overall Length (OL): 83.37mm / 3.280″

• Standard size

Cross-Reference OEM Part Numbers

• Kibblewhite Part No. 80-8056H

Vehicle Fitments

• Yamaha WR 400 1998–2000

• Yamaha WR 426 2001–2002

• Yamaha YZ 400 1998–1999

• Yamaha YZ 426 2000–2002