The Black Diamond™ Kibblewhite valve (Manufacturer's part number: 82-82053) is a CNC-machined intake valve designed for quads. Made from a single piece of EV8 stainless steel, it combines lightness and robustness for long-lasting reliability in the cylinder head. Designed for engine tuning and overhauls where the quality of replacement parts is paramount.
- Application: Intake (intake valve)
- Tulip angle: 20°
- Head diameter: 38.00 mm
- Stem diameter: 0.2345" (0.2345)
- Treatment: German process at 0.002" depth with a surface layer of 0.0002" — reduced friction and improved protection compared to electrolytic chrome/nickel plating
- Stems: Black Nitroneg coating
- Design & testing: Optimised profile through finite element analysis (F.E.A.) and verified on a computerised flow bench
- Manufacturing: Made in the USA
Compatible with many Polaris 500 models (e.g. Predator and Outlaw 2006‑2007), this valve is suitable for cylinder head refurbishment and precision maintenance operations. A premium replacement part for discerning riders and tuners, it easily integrates into existing valve/seat assemblies while adhering to the specified dimensions.
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