VALVE INTAKE YZF400/426 98-02, KIBBLEWHITE 80-8055H

This White Diamond® Stainless Steel Intake Valve is designed for Yamaha® WR™ and YZ™ 400/426 models from 1998 to 2002. Manufactured from a one-piece forging of EV8 Stainless Steel, it offers superior heat and corrosion resistance. The valve is precision CNC machined and finished with high-grade hard chrome plating, ensuring durability and optimal performance under high-stress conditions. Engineered with flow-optimised profiles and tested using advanced analysis tools, this valve is built for reliability and consistent intake performance.

Features

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

• High heat and corrosion resistance

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

• Designed using Finite Element Analysis (FEA)

• Flow-tested profiles for improved intake efficiency

Specifications

• Head Diameter: 27.00mm / 1.063″

• Stem Diameter: 4.50mm / 0.1765″

• Tulip Angle: 15 degrees

• Overall Length (OL): 84.39mm / 3.320″

• Standard size

Cross-Reference OEM Part Numbers

• Kibblewhite Part No. 80-8055H

Vehicle Fitments

• Yamaha WR 400 1998–2000

• Yamaha WR 426 2001–2002

• Yamaha YZ 400 1998–1999

• Yamaha YZ 426 2000–2002