Prox Valve & Spring Kit - Steel Intake Valves
Prox Valve & Spring Kit - Steel Intake Valves
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Estimated delivery: Feb 05 - Feb 09
About this product
About this product
Upgrade your engine's performance and durability with the Prox Valve & Spring Kit. Designed as a direct replacement for OEM components, this kit provides enhanced reliability and performance, especially under demanding conditions. Experience improved valve train control and longevity with this high-quality upgrade.
Description
The Prox Valve & Spring Kit replaces your motorcycle's original equipment manufacturer (OEM) valves and valve springs with stronger, more durable components. The steel, nitrided intake valves offer increased resistance to wear and tear, ensuring long-lasting performance even under extreme stress. Complementing these robust valves are specially designed valve springs crafted from premium chrome vanadium steel. These stronger springs effectively manage the added weight of the steel valves, maintaining optimal valve train control at high RPMs. Installation is straightforward, utilizing the OEM retainers, bases, and valve seals, saving you time and hassle.
Features & highlights
- Steel, nitrided intake valves provide increased durability and reduce wear under extreme conditions.
- Stronger valve springs accommodate the weight of steel valves, enhancing valve train control.
- Springs are made from premium chrome vanadium steel for superior performance and durability at high RPM.
- Direct replacement for OEM valves and valve springs for easy installation.
- Designed for optimal performance and longevity.
Technical specifications
- Brand: Prox
- Product Name: Valve and Spring Kit
- Type: Valve Spring, Intake Valve
- Application: Intake
- Material: Steel
- Color/Finish: Black
- Units: Kit
Important to know
This kit includes steel intake valves and valve springs. OEM retainers, bases, and valve seals are required for installation and are not included.
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.SIS6333-2
Valve and Spring Kit
Intake
Steel
Valve Spring, Intake 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.

