KIT IN VALVE+SPRING CRF450, PROX 28.SIS1409-2 INTAKE
4.1 Trustpilot 99.9% positive on eBay
Delivery to United States 5–8 business days
Spread the cost with 
Prox Steel INTAKE Valve/Spring Kit. This kit contains a set of steel intake valves plus a set of special designed stronger valve springs. The ProX kit replaces the OEM valves and valve springs and can be installed using the OEM retainers, bases and valve seats.
- SKU
- 65-K155.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (1)
Fitments (8)
| Make | Model | Year |
|---|---|---|
| HONDA | CRF 450R | 2009 |
| HONDA | CRF 450R | 2010 |
| HONDA | CRF 450R | 2011 |
| HONDA | CRF 450R | 2012 |
| HONDA | CRF 450R | 2013 |
| HONDA | CRF 450R | 2014 |
| HONDA | CRF 450R | 2015 |
| HONDA | CRF 450R | 2016 |
- General Product Group
- Cam & Valvetrain
- General Product Type
- Valve & Spring Kit
- Variant Id
- 264471
FULL DESCRIPTION
ProX Steel Intake Valve and Spring Kit for CRF450
Upgrade your motorcycle's performance and durability with the ProX Steel Intake Valve and Spring Kit. This kit is engineered to provide an extended lifespan compared to OEM titanium valves, offering up to three times the durability.
Each ProX kit includes high-quality steel intake valves and specially designed, stronger valve springs. The increased weight of the steel valves necessitates the use of heavier springs, which are included to ensure optimal performance and reliability. This kit is designed for a direct replacement of your original OEM valves and springs, allowing you to utilize your existing retainers, bases, and valve seats for a straightforward installation.
Key Features:
- Durable steel construction for extended lifespan.
- Outlasts OEM titanium valves by up to 3 times.
- Includes specialized, stronger valve springs to accommodate the steel valve weight.
- Designed for direct replacement of OEM components.
- Utilizes OEM retainers, bases, and valve seats for easy installation.
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00 (UK time).
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
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.
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.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.