Kibblewhite Racing Valve Spring Kit .450" Lift
Kibblewhite Racing Valve Spring Kit .450" Lift
Available in stock (15)
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Estimated delivery: Feb 07 - Feb 11
About this product
About this product
Upgrade your engine's valvetrain with the Kibblewhite Lightweight Racing Valve Spring Kit, designed for high-performance applications. This kit provides superior valvetrain control, especially in boosted or turbocharged engines, ensuring reliability and performance at high RPMs.
Description
The Kibblewhite Racing Valve Spring Kit (KW304021) is engineered to enhance your engine's performance and reliability. This kit features increased spring rates and high lift compatibility compared to stock springs, making it ideal for high-performance camshafts. The CNC-machined titanium or H.T. (Heat Treated) Steel retainers, combined with Cr-Si (Chromium Silicon) alloy dual springs, offer exceptional valvetrain control at elevated RPMs. Whether you're running a boosted or turbocharged setup, this valve spring kit ensures optimal valve closure and prevents valve float, maximizing power output and engine longevity. Proudly made in the USA, the Kibblewhite valve spring kit delivers consistent performance and durability you can trust. Specifically designed for both exhaust and intake valves.
Features & highlights
- Optimized for boosted and turbocharged engines, providing reliable performance under increased pressure.
- Increased spring rates improve valve control and prevent valve float at high RPMs.
- High lift compatibility allows for the use of aggressive, high-performance camshafts.
- CNC-machined titanium or H.T. Steel retainers offer exceptional strength and reduced weight.
- Cr-Si (Chromium Silicon) alloy dual springs ensure consistent performance and durability.
- Made in the USA, guaranteeing high-quality materials and manufacturing.
Technical specifications
- Brand: Kibblewhite
- Part Number: KW304021 / 30-4021
- Application: Exhaust, Intake
- Collar Material: Titanium
- Material: Chromium Silicon Alloy
- Product Name: Spring Kit
- Spring Lift: 0.450"
- Spring Open Pressure: 202 lb
- Spring Seat Pressure: 66 lb
- Type: Valve
- Units: Kit
Important to know
This kit is a direct replacement for your stock valve springs. Professional installation is recommended to ensure proper setup and performance.
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
30-4021
Spring Kit
202 lb
66 lb
0.450"
Titanium
Exhaust, Intake
Chromium Silicon Alloy
Valve
Kit


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.

