FDY Performance
VALVE EXHAUST KX450F 06-08, KIBBLEWHITE 40-40316
VALVE EXHAUST KX450F 06-08, KIBBLEWHITE 40-40316
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This standard exhaust valve is a direct replacement for Kawasaki KX450F models from 2006 to 2008. Made from Black Diamond™ stainless steel, it features a nitrided surface for enhanced wear resistance and reduced friction. Engineered with precision using Finite Element Analysis and flow bench testing, this one-piece forged valve provides superior durability and performance under demanding conditions.
Features
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One-piece forged Black Diamond™ stainless steel construction
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Black Nitroneg coating for improved durability and reduced friction
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Designed with Finite Element Analysis and tested on flow benches
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Requires Kibblewhite® Lightweight Valve Spring Kits for optimal performance
Specifications
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Valve Type: Exhaust
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Material: Black Diamond™ Stainless
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Coating: Black Nitroneg
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Quantity: 1
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Head Diameter: 31.00 mm / 1.220"
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Stem Diameter: 5.5 mm / 0.2150"
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Tulip: 20º
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Overall Length: 3.230"
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Remarks: Standard
Cross-Reference OEM Part Numbers
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Kibblewhite 40-40316
Vehicle Fitments
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Kawasaki KX450F (2006–2008)
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.
We’re not just a brand — we’re a movement built by riders, for riders. Whether you’re chasing podiums, upgrading your build, or maintaining your machine, FDY Performance keeps you on the road and at the top of your game.
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