Does it fit your motorcycle?
Look it up by licence plate or VIN, or choose your model.
Confirmed compatible · Position:
This part doesn't fit your bike. See parts that fit
Fits most motorcycles
Not model-specific. Check dimensions and specifications in the description before ordering.
Chosen by size, not by model
The size is printed on the tyre sidewall, e.g. 120/70 ZR17, and in your registration document.
Checking fitment…
Fitment check unavailable
Kibblewhite Intake Valve and Spring Kit - 4.50mm - 40-40350
Product info
- Item number
- 09260452
- Manufacturer number
- 40-40350
- Position
Upgrade your valvetrain with the Kibblewhite Intake Stainless Conversion Valve and Spring Kit. This kit provides everything needed to convert your head to long-life stainless steel Black Diamond intake valves, significantly extending the lifespan of your valvetrain components.
Description
The Kibblewhite Intake Stainless Conversion Valve and Spring Kit dramatically extends the life of your valvetrain and intake components—up to four times longer than OEM titanium parts. This conversion kit includes forged one-piece stainless steel intake valves, wound chrome-silicon heat-treated wire valve springs, ultra-light titanium retainers, and hardened steel bases. Each component is meticulously designed using Finite Element Analysis (F.E.A.) software, along with proprietary camshaft analysis and spring design software. Specifically engineered for each application, this kit ensures optimal performance and reliability. Upgrade to Kibblewhite for unmatched durability and performance.
Features & highlights
- Extends valvetrain life up to 4x over OEM titanium parts, saving you money and maintenance time.
- Features forged one-piece stainless steel intake valves for superior strength and heat resistance.
- Includes wound chrome-silicon heat-treated wire valve springs for consistent performance and longevity.
- Ultra-light titanium retainers reduce valvetrain mass, improving engine response.
- Hardened steel bases provide a durable and stable foundation for the valve springs.
- Designed using Finite Element Analysis (F.E.A.) software for optimized performance and reliability.
- Proudly made in the USA, ensuring top-quality materials and manufacturing.
Technical specifications
- Brand: Kibblewhite
- Product Name: Valve and Spring Kit
- Type: Conversion
- Application: Intake
- Material: White Diamond® Stainless
- Head Diameter: 31.00 mm
- Stem Diameter: 4.50 mm
- Length: 3.120"
- Tulip Angle: 20°
- Collar Material: Titanium
- Spring Lift: 0.445"
- Spring Seat Pressure: 46 lb
- Spring Open Pressure: 155 lb
- Valve Seat Height: 1.320"
Important to know
This stainless steel conversion kit includes only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves.
- Brand
- KIBBLEWHITE
- Vendor part number
- 40-40350
- Product name
- Valve and Spring Kit
- Tulip angle
- 20°
- Stem diameter
- 4.50 mm
- Head diameter
- 31.00 mm
- Length
- 3.120"
- Valve seat height
- 1.320"
- Spring open pressure
- 155 lb
- Spring seat pressure
- 46 lb
- Spring lift
- 0.445"
- Collar material
- Titanium
- Application
- Intake
- Material
- White Diamond® Stainless
- Type
- Conversion
- Units
- Kit
Free shipping to a GLS parcel shop or parcel box on orders over €200.
We ship your order as quickly as we can. Orders are usually packed within 24 hours on weekdays.
You have a 14-day right of return. Read more
4.8 out of 5 on TrustpilotRead our reviews →
Certified e-mærket web shop
