Forge Motorsport Recirculation Valve – ST250 (Focus ST Mk3)

This high-performance Forge Recirculation Valve is a direct replacement for the factory-fitted valve on the Ford Focus ST250 (Mk3). It features a piston-based design, offering significantly improved durability and performance over the OEM diaphragm-style valve.

✅ Why Upgrade?

The original (OEM) valve is designed to handle stock boost levels. However, when tuning or remapping the ST250 for increased boost, the stock diaphragm can collapse or leak — resulting in performance loss or boost leaks. The Forge valve is engineered to withstand boost pressures over 2.5 bar, making it ideal for modified or high-performance applications.

🔄 Recirculation, Not Atmospheric

This is a recirculation valve, meaning it redirects excess boost pressure back into the intake system, rather than venting it to the atmosphere. This maintains smooth engine operation and is PCM-friendly, avoiding common issues like air leaks, rough idle, or fueling errors that some aftermarket atmospheric (blow-off) valves may introduce.

Note: This valve does not create loud “blow-off” sounds typically associated with atmospheric dump valves. However, if used with an open intake kit, it can enhance turbo induction and recirculation noise slightly — without causing unwanted compressor surge or turbo damage.

🔧 Key Features

• Fully piston-based, serviceable design

• Spring-tunable to support different boost levels

• Direct bolt-on fitment to turbo – replaces the OEM valve

• Durable construction for long-term reliability

• Angled vacuum port for easier installation

 Shipping info: This product is available for shipping inside the U.K and Internationally. Shipping times may vary. Extra charges may be incurred if your locations is considered Remote. If this is the case a member of our team will be in touch shortly after you have completed your order.