Prox Valve And Spring Kit - Steel Intake Valves
Prox Valve And Spring Kit - Steel Intake Valves
Available in stock (6)
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Estimated delivery: Feb 04 - Feb 08
About this product
About this product
Upgrade your engine's performance and durability with the Prox Valve and Spring Kit. This kit replaces your OEM valves and valve springs with high-quality components designed for demanding conditions. Experience improved reliability and enhanced performance at high RPMs.
Description
The Prox Valve and Spring Kit delivers a significant upgrade over stock components. Featuring steel, nitrided valves, this kit provides increased durability and reduces wear, even under extreme conditions. The stronger valve springs are engineered to handle the extra weight of the steel valves, ensuring optimal valve control and preventing valve float at high engine speeds. Manufactured from premium chrome vanadium steel, the valve springs offer exceptional performance and longevity. This kit ensures reliable operation and improved power output for your engine. Installation is straightforward, utilizing the OEM retainers, bases, and valve seals for a seamless fit.
Features & highlights
- Replaces OEM valves and valve springs with performance-engineered components.
- Steel, nitrided valves provide increased durability and reduce wear.
- Stronger valve springs manage the weight of steel valves and prevent valve float.
- Premium chrome vanadium steel springs ensure high performance and durability at high RPM.
- Designed for easy installation using OEM retainers, bases, and valve seals.
- Enhances engine reliability and power output.
Technical specifications
- Brand: Prox
- Product Name: Valve and Spring Kit
- Application: Intake
- Valve Material: Steel
- Valve Finish: Steel, Nitrided
- Spring Material: Chrome Vanadium Steel
- Units: Kit
Important to know
This kit is designed to be installed using the OEM retainers, bases, and valve seals, which are not included. Please 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
PROX
28.SIS4409-2
Valve and Spring Kit
Intake
Steel
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.

