KIT IN VALVE+SPRING CRF250, PROX 28.SIS1337-2 INTAKE
4.1 Trustpilot 99.9% positive on eBay
Free UK delivery 2–4 business days
Spread the cost with 18+, T&Cs apply
ProX Steel INTAKE Valve/Spring Kit. This kit contains steel intake valves and specially designed stronger valve springs. The ProX kit replaces OEM valves and valve springs and can be installed using OEM retainers, bases, and valve seats.
- SKU
- 65-K151.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (1)
Fitments (2)
| Make | Model | Year |
|---|---|---|
| HONDA | CRF 250R | 2008 |
| HONDA | CRF 250R | 2009 |
- General Product Group
- Cam & Valvetrain
- General Product Type
- Valve & Spring Kit
- Variant Id
- 264467
FULL DESCRIPTION
ProX Steel Intake Valve and Spring Kit for Honda CRF250R
Upgrade your motorcycle's performance and durability with the ProX Steel Intake Valve and Spring Kit. This kit is designed as a direct replacement for your original titanium valves and springs, offering a significant increase in lifespan.
ProX is renowned for its high-quality aftermarket parts, and this kit exemplifies their commitment to excellence. By converting from OEM titanium valves to ProX steel valves, you can expect a lifespan extension of up to three times that of standard titanium valves. This means less frequent maintenance and more reliable performance on and off the track.
Key Features:
- Extended Lifespan: Steel valves offer up to three times the lifespan of OEM titanium valves.
- Complete Kit: Includes steel intake valves and specially designed stronger valve springs.
- Direct Replacement: Engineered to replace OEM valves and springs seamlessly.
- Uses OEM Components: Compatible with OEM retainers, bases, and valve seats for easy installation.
- Enhanced Durability: Provides superior resistance to wear and tear for demanding riding conditions.
The ProX Steel Intake Valve and Spring Kit is an essential upgrade for riders seeking to improve the longevity and reliability of their engine. The included stronger valve springs are crucial to accommodate the slightly increased weight of the steel valves, ensuring optimal valve train operation.
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
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.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. 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
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


