SKU: 50096536787

Blow Off Valve and Kit for the Ford Focus ST 225 MK2

Sale price$159.25 Regular price$176.94
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Ships within 48 hours · Estimated delivery Aug 27 - Sep 1

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Description

Blow Off Valve and Kit for the Ford Focus ST 225 MK2We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner A remote Blow off, or Dump Valve Kit for the Ford Focus Mk2 ST225. This uses a twin piston valve to ensure compatibility with the engine management system and a custom silicone hose to ensure easy installation. This valve can be installed in combination with the OEM valve, or on it's own by using one of our blanking plates. The Forge valve uses an aluminium piston

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner

A remote Blow off, or Dump Valve Kit for the Ford Focus Mk2 ST225. This uses a twin piston valve to ensure compatibility with the engine management system and a custom silicone hose to ensure easy installation. This valve can be installed in combination with the OEM valve, or on it's own by using one of our blanking plates.

The Forge valve uses an aluminium piston and is totally rebuildable. It’s also configurable for different levels of boost pressure e.g. on a remapped car, by simply changing the piston preload spring inside the valve.

  • The Forge atmospheric Blow Off valve for the Ford  is  made from billet aluminium.
  • This atmospheric blow off valve dumps the charge-air to atmosphere creating the "Whoosh" sound when the throttle is lifted.
  • This improves the throttle response and increases the clamping load to maintain boost pressure more reliably.
  • Unlike single piston or diaphragm diverter valves, this uses counter balanced springs and dual pistons to prevent the valve from leaking air into the intake system at idle.
  • This prevents our blow off valves suffering any of the failures associated with single piston and diaphragm type diverter valves.
  • The valve itself is of dual piston design for longevity with the ability to be serviced and tuned with replacement springs if required. (See below)

The hose is available in red, blue, or black, and the valve is available in black. Please select your choice from the options above.

 

In The Box:
1 x FMFOCSTDV Valve
1 x 35mm Hose Clamp
1 x 50mm Hose Clamp
1 x 500mm of 4mm Vacuum Tube
1 x 5mm T Piece
1 x Silicon Hose #1022
1 x Instructions
1 x Forge Sticker

 

  • The Forge silicone hoses in this kit have been designed to include an expensive inner liner of modified silicone known as Fluorosilicone. This means the hoses are suitable to be used with either modern long-life coolants, Organic Acid Technology coolants (O.A.T.) or air containing oil mist.
  • The construction of the hoses has been engineered to exceed that of the OEM fitments and will enhance any engine bay both technically and aesthetically.
  • The use of a Fluorosilicone liner ensures that Forge silicone hoses are the clear market leader.
  • Lifetime warranty

If you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.

If you are unsure if this product is suitable for your

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 50096536787

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Jason Holmes
Battle Creek, US
★★★★★ 5
Space Saver
Perfect fit and easy install. Made more space for my desk within minutes.
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Reviewed in the United States on December 5, 2025
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Amazon Customer
Carnegie, US
★★★★★ 4
Overall great
I LOVE IT. omg exactly what I was looking for. Easy to set up. The only issue is you have to bend over/kneel to set it up and in the process I got an upset stomach, which is why deducted one star. So if you have bowel issues like me, you might want to consider that with this product.
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Reviewed in the United States on February 3, 2026
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Anthony Armenta
Fort Morgan, US
★★★★★ 5
right size for your dock.
Fit perfectly. Everything is nice and neat.
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Reviewed in the United States on December 14, 2025
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Justin B.
Fort Morgan, US
★★★★★ 5
Sturdy, worked well
Holds it sturdy
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Reviewed in the United States on December 21, 2025
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bms
Charlottesville, US
★★★★★ 5
Solid as described
Value for money and easy installation
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Reviewed in the United States on October 4, 2025

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