KIT IN VALVE+SPRING KXF250, PROX 28.SIS4336-2 INTAKE
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Delivery to United States 5–8 business days
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ProX steel intake valve and spring kit. This kit offers a 3x extended lifespan compared to OEM titanium valves. It includes steel intake valves and specially designed stronger valve springs to accommodate the extra weight of steel valves. The ProX kit replaces OEM valves and springs and can be installed using OEM retainers, bases, and valve seats. Part number: 28.SIS4336-2.
- SKU
- 65-K167.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (1)
Fitments (2)
| Make | Model | Year |
|---|---|---|
| KAWASAKI | KX 250F | 2007 |
| KAWASAKI | KX 250F | 2008 |
- General Product Group
- Cam & Valvetrain
- General Product Type
- Valve & Spring Kit
- Variant Id
- 264483
FULL DESCRIPTION
ProX Steel Intake Valve and Spring Kit
Upgrade your engine's performance and durability with the ProX Steel Intake Valve and Spring Kit. This high-quality kit is designed to replace your OEM titanium valves and springs, offering a significant increase in lifespan.
ProX offers a comprehensive range of titanium to steel conversion kits. This particular kit features a steel intake valve and specially designed, stronger valve springs. The increased weight of the steel valve necessitates a heavier spring to ensure optimal performance and prevent valve float.
This kit is engineered for a direct replacement of OEM valves and springs, allowing you to utilize your existing OEM retainers, bases, and valve seats for a straightforward installation.
Key Features:
- Material: Durable steel construction for extended lifespan.
- Increased Durability: ProX steel valves offer up to three times the lifespan of OEM titanium valves.
- Complete Kit: Includes steel intake valves and stronger, purpose-designed valve springs.
- Easy Installation: Designed to replace OEM components directly, using existing hardware.
- Manufacturer: Pro-X Racing.
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Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
Yes. We ship from the UK. Orders ship within 3 working days, then delivery to the United States takes 5–8 business days. The delivery price is shown at checkout before you pay. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
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Any customs duties or import taxes charged in the United States are paid by you when the parcel arrives. Any tax we collect ourselves is shown at checkout before you pay.
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