FDY Performance
VALVE GUIDE EXHAUST YZF400/426, KIBBLEWHITE 80-80120, YAMAHA YZF/WRF400/426 98-02
VALVE GUIDE EXHAUST YZF400/426, KIBBLEWHITE 80-80120, YAMAHA YZF/WRF400/426 98-02
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This standard exhaust valve guide is made from C63000 nickel-aluminium bronze and is designed for Yamaha WR and YZ 400/426 models from 1998 to 2002. Built for high-performance durability, it offers excellent wear resistance and thermal conductivity. With a standard outside diameter of 0.3957", this guide is engineered for reliable exhaust valve operation in demanding engine environments.
Features
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Made from C63000 nickel-aluminium bronze
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Designed for exhaust valve applications
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Standard guide diameter: 0.3957"
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High thermal conductivity and wear resistance
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Designed to maintain airflow efficiency and withstand high temperatures
Specifications
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A: 0.580" (14.74 mm)
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B: 0.610" (15.50 mm)
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C: 0.580" (14.74 mm)
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D: 0.695" (17.66 mm)
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E: 0.420" (10.67 mm)
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F: 0.1955" (4.96 mm)
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G: 0.3957" (10.05 mm)
Cross-Reference OEM Part Numbers
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Part No. 65-942+000
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Kibblewhite #80-80120
Vehicle Fitments
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Yamaha WR400F 1998–2002
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Yamaha YZ400F 1998–2002
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Yamaha WR426F 1998–2002
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Yamaha YZ426F 1998–2002
FDY Performance – Engineered for riders who demand more.
At FDY Performance, we deliver precision-engineered motorcycle parts trusted by riders across the UK and beyond. Every component is tested for reliability, durability, and peak performance so you can ride harder, longer, and with confidence.
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