KIBBLEWHITE

Kibblewhite Black Diamond™ exhaust engine valve CNC-machined from a one-piece EV8 stainless steel forging for strength, low weight and excellent flow. Special surface infusion improves wear resistance and reduces friction for long service life.

• Exhaust valve – 24.50 mm head, 4.50 mm stem, 25° tulip angle
• EV8 stainless one-piece forging with black Nitroneg-coated stem
• Wear & corrosion resistance via German surface-infusion process

Kibblewhite Black Diamond™ intake valve built for strong, reliable valvetrain performance. CNC-machined from a one-piece EV8 stainless forging with advanced surface treatment to reduce friction and improve wear and corrosion resistance.

• Intake valve: 37.00 mm (1.457") head diameter
• Precision fit: 5.00 mm (0.2158") stem, 83.31 mm (3.280") length
• Durability upgrades: black nitroneg-coated stem + wear-resistant infusion treatment

Kibblewhite Black Diamond™ exhaust engine valve built for high wear resistance, smooth operation and strong flow performance. CNC machined from one-piece EV8 stainless forging with an infused surface treatment and a black Nitroneg-coated stem for reduced friction.

• Type: Exhaust valve (Black Diamond™)
• Sizes: Head Ø 30.50 mm (1.201"), stem Ø 5.00 mm (0.2155"), length 3.380"
• Note: Requires Kibblewhite spring kit

Kibblewhite C630 exhaust valve guide made in the USA from C63000 nickel-aluminum bronze for long-lasting valvetrain performance. High copper content improves heat transfer, while added nickel boosts wear resistance.

• Application: Exhaust
• Size: Standard (0.2155" ID / 0.4352" OD)
• Material: C630 bronze (nickel-aluminum bronze)

Kibblewhite C630 valve guide for intake applications, built to handle high temperatures with excellent wear resistance and heat transfer. Made in the USA from copper-based C63000 nickel-aluminum bronze for long-lasting valvetrain performance.

• Material: C630 bronze (nickel-aluminum bronze)
• Size: Standard — ID 0.1764", OD 0.3765"
• Use: Intake valve guide (sold individually)

Kibblewhite C630 intake valve guide made from C63000 nickel-aluminum bronze for excellent wear resistance and heat transfer. Designed to support high-performance, high-temperature valvetrain operation with minimal airflow disruption.

• ✅ Material: C630 Bronze (C63000 nickel-aluminum bronze)
• ✅ Size: Oversize (+0.010")
• ✅ ID 0.1764" / OD 0.3865" (intake application)