SKU: 65099222257

Forge Motorsport - Twin Piston Blow Off Valve with Side Vacuum Nipple (Alloy finish)

Sale price$146.70 Regular price$163.00
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Ships within 48 hours · Estimated delivery Jul 22 - Jul 27

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Description

Forge Motorsport - Twin Piston Blow Off Valve with Side Vacuum Nipple (Alloy finish)This version of our popular FMDV004 valve has the vacuum connection on the side of the valve which is ideal for those applications where space is restricted. Made from billet aluminum, this atmospheric diverter valve dumps the charge air to atmosphere creating the "Whoosh" sound when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. Unlike single piston or diaphragm

This version of our popular FMDV004 valve has the vacuum connection on the side of the valve which is ideal for those applications where space is restricted.    

Made from billet aluminum, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound when the throttle is lifted. This increases both quicker throttle response and higher 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 diverter valves suffering any of the failures associated with single piston and diaphragm type diverter valves.

Fitment Guide: Suitable for most turbo cars with an Air Flow Meter. Dual-Piston Atmospheric Valves and Valve Fitting Kits

All Forge Motorsport Dual-Piston Atmospheric Valves have been designed and built with the intent of venting 100% of the residual charge air remaining in your forced induction system to the atmosphere at throttle lift. While we have incorporated many elements into the design of the Dual-Piston valves to aid in their compatibility with mass air-flow sensor equipped vehicles, we cannot always guarantee that each individual’s application will be compatible with a valve that vents the charge air into the atmosphere.

Forge Motorsport nor any of it’s Authorized Distributors can assume any responsibility for any adverse effects resulting from the installation of this valve onto a vehicle whose engine-management-system, whether factory or aftermarket, is not capable of compensating for the loss of metered air through a vent-to-atmosphere valve such as this.

 Please contact us if you are unsure whether this product is suitable for your vehicle.

In The Box:
1 x FMDV004A Valve
1 x Forge Sticker

The valve has a port size of 25mm

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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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]
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SKU: 65099222257

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Reviewed in the United States on March 10, 2026
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Kelsey
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Reviewed in the United States on May 8, 2026
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One of the few "heavy duty" toys that my pittie hasn't destroyed after a couple of weeks. Most of them last two days. She's an absolute beast so I'm confident if she can't destroy it, few dogs can.
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Reviewed in the United States on April 10, 2026
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