Kibblewhite Black Diamond Engine Valve - Stainless Steel
Kibblewhite Black Diamond Engine Valve - Stainless Steel
Available in stock (15)
-
Estimated delivery: Feb 06 - Feb 10
About this product
About this product
Upgrade your engine's performance with the Kibblewhite Black Diamond™ Engine Valve. This high-performance valve is engineered for superior flow, durability, and wear resistance, ensuring optimal engine operation. Made in the USA with precision and quality, the Black Diamond™ valve is the ideal choice for enthusiasts and professionals seeking top-tier engine components.
Description
The Kibblewhite Black Diamond™ valve is CNC machined from a one-piece forging of EV8 Stainless Steel, providing a lightweight yet strong construction. Its unique profile enhances flow characteristics, optimizing engine performance. The valve undergoes a special German infusion process, penetrating to a depth of 0.002" with a surface buildup of 0.0002". This process significantly improves wear properties, reduces friction, and provides exceptional corrosion resistance, surpassing traditional chrome and nickel electrolysis plating. Each valve design utilizes Finite Element Analysis (F.E.A) software, and profiles are rigorously tested on a computerized flow bench to guarantee performance. The stems are coated with black nitroneg for enhanced durability and reduced friction. Upgrade to Kibblewhite Black Diamond valves for unparalleled engine reliability and performance.
Features & highlights
- CNC machined from one-piece forgings of EV8 Stainless Steel for superior strength and durability.
- Lightweight design and optimized profile provide excellent flow characteristics for enhanced engine performance.
- German infusion process improves wear properties, reduces friction, and offers superior corrosion resistance.
- Designed using Finite Element Analysis (F.E.A) software and tested on a computerized flow bench for optimal performance.
- Black nitroneg coated stems provide increased durability and reduced friction.
- Made in the USA, ensuring top-quality materials and manufacturing.
Technical specifications
- Brand: KIBBLEWHITE
- Product Name: Valve
- Vendor Part Number: 40-40656
- Material: Stainless Steel
- Application: Exhaust
- Head Diameter: 31.01 mm
- Stem Diameter: 5.50 mm
- Length: 3.030"
- Tulip Angle: 20°
Important to know
Ensure compatibility with your specific engine model before installation.
Shipping & Return
Shipping & Return
Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.
GLS home delivery costs DKK 59.
We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.
There is a 14-day return policy. Read more
Parts Denmark Info
Parts Denmark Info
Parts Denmark is a new webshop based in Denmark. We have a physical location you can visit (No showroom yet), and we have both email and phone support in our opening hours.
Our company info is:
Parts Denmark ApS
VAT: DK45974758
Dam Holme 11
3660 Stenløse, Denmark
hello@partsdenmark.com
+45 222 333 29
Best regards,
William Svendsen & Martin Høyer (Owners)
Specifications
KIBBLEWHITE
40-40656
Valve
20°
5.50 mm
31.01 mm
3.030"
Exhaust
Stainless Steel
Each


Who is behind Parts Denmark
Martin and William are the duo behind Parts Denmark — an unlikely but awesome combo of a tech-savvy young IT wizard and a seasoned motorcycle guru who’s seen (and fixed) it all. Together, we’ve built a team with big ambitions, plenty of passion, and a shared mission to create great things — side-by-side with you.

