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104 reviews


Uprated Re-Circulating Valve

The mountune uprated turbo re-circulating valve is a direct replacement for the OE component.

Machined from solid aluminium with a piston-type design (compared to the OE diaphragm) the more robust design and material are suitable for vehicles in advanced state of tune.

A diaphragm-design recirculation valve could function less effectively when the pressure differential across the turbocharger compressor housing is increased above the original operating conditions. This can cause the valve to open prematurely, leading to possible turbocharger damage due to increased turbo shaft speed.

mountune's engineers have designed an uprated, more robust valve, that features a metal piston and rubber sealing system. This design also features an uprated spring that improves sealing pressure, which allows the valve to remain closed under high pressure conditions.

This product is compatible with mk2 Focus RS, mk2 Focus ST and mk3 Focus ST.


  • Mounts directly on OE turbocharger
  • Easy installation
  • Suitable for vehicles running increased boost pressure
  • Superior piston type design
Customer Reviews
4.9 Based on 104 Reviews
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Filter Reviews:
    James I.
    United Kingdom United Kingdom
    Good quality item

    Good quality item. Got a mechanic to fit it at the same time as the intercooler. A bit fiddly but made easier by having it off the ground on a ramp so only a 20 minute job. It seems to have got rid of the strange faint whistling sounds that I previously got from the old valve coming on and off very low boost. Fitted in preparation for the MP275 remap as already have the exhaust and induction kit fitted.

    David S.
    United Kingdom United Kingdom
    Re-Circulating Valve

    Great quality upgrade that was easy to fit in around 30 mins. Futureproof upgrade before my first tune on my Focus ST mk3.5.

    United Kingdom United Kingdom
    Protect your turbo

    If you are going to up your ST power from stock then up grading this valve is a must. The standard recirculating valve isn’t up to the job and can fail,leading to turbo damage. This Mountune valve is league’s ahead, extremely well engineered from high grade aluminium. Since fitting the valve I have noticed improved throttle response,smoother power delivery and better boost noises. I would recommend this valve to any ST owner,5 stars.