Recirculation / Blow off Valves

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Forge Blow Off Valve and Fitting Kit For Dodge Caliber

Forge

A complete kit including everything that you will need to install this Blow Off valve to your Dodge Caliber. This kit is available in two options: Black hard pipes, black hoses and black valve, or polished hard pipes, polished valve and black hoses. Please select above the kit required.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 application, please contact us.

£68.18£56.82 (ex. VAT)
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Forge Blow Off Valve for Rover MG ZT,620 and 220 Models

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerForge Motorsport direct fitment Blow Off valve for Rover MG ZT,620 and 220 models fitted with the T25 Turbo.This is a piston design blow off valve (BOV) that is a direct replacement for the original fitment. This valve gives greater longevity than the diaphragm valves (OEM) but also benefits from its ability to be fitted with different springs when the boost pressure has been increased or the engine has been modified. In The Box:1 x FMDVT25A Valve1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.Blow off equivalent to OEM Part No. 55558271 (Saab)Will fit Saab Turbocharger Part No. 12755106 and Garrett Turbocharger Part No. 720168

£93.32£77.77 (ex. VAT)
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Forge Turbo Recirculation Valve for Rover MG ZT, 620, 220 and Saab

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerForge Motorsport direct fitment Recirculation valve for Rover MG ZT,620,220 and Saab 93 fitted with the T25 turbo.This is a piston design recirculation valve that is a direct replacement for the original compressor bypass valve (CBV).This valve gives greater longevity than the diaphragm valves (OEM) but also benefits from its ability to be fitted with different springs when the boost pressure has been increased or the engine has been modified.In The Box:1 x FMDVT25R Valve1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.Replaces OEM Part No. 55558271 (Saab)Will fit Saab Turbocharger Part No. 12755106 and Garrett Turbocharger Part No. 720168

£95.19£79.33 (ex. VAT)
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Forge Subaru Impreza V4 Piston Ram Closed Loop Dump Valve

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerAlloy Recirculating Ram Dump Valve available to fit the Impreza V5. Made from billet aluminium, this recirculating diverter valve dumps the charge-air back into the air intake system keeping external noise to a minimum. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliablyIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.

£103.94£86.62 (ex. VAT)
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Forge Dual Piston Blow Off/Dump Valve

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerSuitable for most turbo cars with an Air Flow Meter.Made from billet aluminium, 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.Please note if you are purchasing this valve for a Fiat Punto 1.4 93-99 you will also need a fitting kit which can be purchased here.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 Authorised 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.In The Box:1 x FMDV004 Valve1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kits below.The valve has a port size of 25mm

£107.99£89.99 (ex. VAT)
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Forge Subaru Impreza MY 93-95 Alloy Original Replacement Dump Valve

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerAlloy Original Replacement Dump Valve available to fit the Subaru Impreza MY 93-95 and Mazda Speed.This is a direct replacement for Part Number. 14471AA001Do you like stealthy performance? Then this is a perfect solution. With an identical orientation and look as the OEM valve, the S013 offers a higher level of performance and quiet operation. With an available black anodized finish, it is almost indistinguishable from its OEM counterpart however you’ll notice improved throttle response, better boost handling capacity and quicker spool recovery.Machined from Billet aluminum and completely serviceable to keep up with your modifications as they progress. Installation is simple and takes less than 10 minutes requiring no modification to the factory plumbing. The S013 comes with Forge’s “No Hassle” limited warrantee.The valve is available in a black, or polished silver finish. Simply select your choice using the options above.In The Box:1 x FMDVS013B Valve1 x Forge StickerIf you are unsure if this product is suitable for your application, please contact us.

£112.24£93.53 (ex. VAT)
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Forge Recirculation Valve and Kit for Audi, VW, SEAT, and Skoda 1.4 TSI

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerThis valve kit is for VAG vehicles equipped with the 1.4 TSI twincharged (supercharged and turbocharged) engines that have the electronically controlled bypass valves (2 bolt fitting). It is recommended for any vehicle where the boost pressure has been increased by an ECU software upgrade and for unmodified vehicles operating in warmer climates, as a solution to the many failures of the OEM valve, that have occurred.Our alternative is a fully engineered solution offering both significantly improved reliability. Our valve and installation kit replaces the original unit with a pressure/vacuum operated piston valve that still also retains the desirable OEM ECU control over valve actuation. This product has been thoroughly designed and tested with the expressed intent of offering improved valve response and maintaining ECU control while resulting in absolutely NO fault codes, NO check engine lights, and no adverse effects of any kind. All of the necessary components and detailed instructions are included and everything is designed to make installation as simple as possible. In The Box:1 x FMDVRTSI Valve1 x Wiring Harness1 x Solenoid, Bracket, and Screws1 x Skoda Vacuum Tap2 x M5 x 35 Self Tapper Screw1 x Uprated Blue Spring10 x Cable Ties1 x 2000mm Length of 4mm Vac Hose1 x M5 x 12 Socket Button Screw1 x M5 Nyloc Nut1 x Instructions1 x Forge Keyring and StickerIf 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 application, please contact us.

£115.67£96.39 (ex. VAT)
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Forge Type RS Valve - Atmospheric

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerThe Forge RS valve has been specifically designed and engineered to offer extreme flow rate capability, where other valves are just not up to it. Often when engines have been tuned by installing larger turbos or even software upgrades improved turbo response can be acheived by fitting the RS valve which has the greater internal mass air flow specification utilising an amazing 50mm (2") bore.For fine tuning there is a variable spring preload incorporated and a ratchet type top adjuster that will allow for the positive and precise adjustment that your driving style demands. To ease installation a 360 degree adjustable vacuum hose connector. With a choice of inlet and outlet connections the RS valve can be matched to your engine perfectly. This valve incorporates a unique conical, progressive rate spring that can allow for the retention of boost pressure from 7 to 22 PSI depending on the individual user's application and level of adjustment.If you are intending on running over 22psi then you will need the uprated spring which is included with the kit. This unique spring design will also allow for unrestricted piston travel and flow volume regardless of the amount of pre-load adjustment added to the spring. Other manufacturers valves using cylindrical springs with adjustable pre-load often experience restricted piston travel and flow volume within the normal range of valve adjustment.Please note: When configured as a Dual- Piston Atmospheric Valve; 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 specify valve finish and hose connector diameter when ordering. In The Box:1 x FMDVRSA Valve1 x Uprated RS Spring1 x Uprated Yellow Spring1 x Blanking Plug (25mm or 34mm)1 x Instructions1 x Forge Sticker

£115.67£96.39 (ex. VAT)
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Forge Renault Megane 225/230 Blow Off Valve and Fitting Kit

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerA complete kit which includes everything that you will need to install this Blow Off/Dump Valve to your Renault Megane 225/230The valve comes in a hand polished finish, whilst the hoses come in a choice or red, blue, or black. Simply select your choice in the options above.In The Box:1 x FMFK054 Blow Off Valve1 x Silicon Hose with Valve Take Off1 x 2000mm of 4mm Vacuum Tube1 x 35mm Hose Clamp2 x 60mm Hose Clamp1 x 5mm T Piece6 x Cable Ties1 x Uprated Blue Dump Valve Spring1 x Uprated Blue Small Spring1 x FMBPVRM Blanking Plate1 x Forge StickerIf you are unsure if this product is suitable for your application, please contact us. 

£119.99£99.99 (ex. VAT)
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Forge Dump Valve for Subaru Impreza 2001 Onwards, Including the 2009 GR STi

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerAn Alloy Atmospheric Dump Valve to fit the Subaru Impreza 2001 onwards models including the 2009 GR STi .Made from billet aluminium and hand polished in the UK, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.In The Box:1 x FMDVSUB01 Valve1 x 34mm Blanking Plug1 x Forge StickerIf 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 application, please contact us. 

£119.99£99.99 (ex. VAT)
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Forge Mitsubishi Evo and GTO Piston Ram Dump Valve

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerMade from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.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 Authorised 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. In The Box:1 x FMDVEVO14 Valve1 x 34mm Blanking Plug1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.

£121.80£101.50 (ex. VAT)
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Forge Nissan Sunny GTi-R and 200SX (S14) Piston Ram Dump Valve

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerMade from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.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 Authorised 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. In The Box:1 x FMGTIR016 Valve1 x Uprated Yellow Spring1 x 28mm Blanking Plug1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kits below.If you are unsure if this product is suitable for your application, please contact us.

£127.91£106.59 (ex. VAT)
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Forge Twin Piston Blow Off Valve with Side Vacuum Nipple

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerThis 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 aluminium, 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 KitsAll 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 Authorised 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. In The Box:1 x FMDV004A Valve1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.The valve has a port size of 25mm

£128.63£107.19 (ex. VAT)
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Forge Blow Off Valve for Ford Focus RS MK3 & Vauxhall Adam, Astra, Corsa, and more

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerThis is a piston design bypass valve that is a direct replacement for the original fitment. This valve gives greater longevity than the diaphragm (OEM) valves but also benefits from its ability to be fitted with different springs when the boost pressure has been increased or the engine has been modified.Please note that if your vehicle has the valve show in Figure 1 then this valve will fit your application, however the valve shown in figure 2 will not be compatible with the Forge valve. We have seen this change on vehicles that are produced post 2016 so please make sure to check before you purchase your Forge valve.*To avoid the possibility of a P0101 trouble code, the ECM must be reprogrammed with a tune optimised for atmospheric discharge.In The Box:1 x FMDVCS14A Valve1 x Uprated Yellow Spring1 x Forge Sticker

£131.99£109.99 (ex. VAT)
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Forge Blow Off Valve for Hyundai and Honda Civic

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerBlow Off Valve for Hyundai Genesis Sonata and Kia Sportage and Optima.The Forge direct replacement blow-off valve is designed to be a more durable and performance oriented valve than the OEM unit. The OEM valve is suitable for stock boost levels for a period of time, however, once boost pressure is raised, and after prolonged use, the stock valve will no longer be adequate. Raising the boost output of the vehicle will have a number of effects on the OEM valve. First and foremost, the additional boost pressure will quickly exceed the capacity of the OEM spring to keep the valve closed under higher boost levels. Since you cannot change the springs in the OEM valve, it cannot be adjusted for higher boost levels. Secondly, the additional heat generated by the increased boost will quickly deteriorate the OEM rubber valve diaphragm, which will also lose strength with repeated oscillations.The Forge valve uses full billet aluminum construction and Viton silicone o-rings that will withstand the highest boost levels and repeated abuse. It is also tunable for varying boost levels with the included spring tuning kit. If there is ever a problem with the valve such as a torn o-ring, replacements are available free of charge, and the valve is fully rebuildable.As the Genesis Coupe 2.0T does not use a MAF (mass air flow) sensor, there is no reason that the residual boost pressure at throttle lift cannot be vented to the atmosphere such as with this valve. The engine management does not meter the air volume entering the engine, so this residual pressure can be discharged without any adverse affects on the performance or driveability of the vehicle. Additionally, the valve being open at an idle or vacuum condition is a normal occurance, and is not indicative of a leaking valve. If the intake manifold is in vacuum, even while cruising at speed, the valve may be open. The OEM valve operates in this same manner, however, it is just not visible/audible because it is recirculating instead of vented to the atmosphere. Using a stiffer spring to keep the valve closed at a vacuum condition may result in too stiff of a spring tension to effectively discharge pressure at a throttle lift condition. In The Box:1 x FMDVHGA Valve1 x Uprated Yellow Spring1 x Uprated Blue Spring3 x M6 x 16 Socket Cap Bolts3 x M6 Plain Washers3 x M6 Spring Washers1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.

£133.43£111.19 (ex. VAT)
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Forge Atmospheric Dump Valve for Micra IG-T 90 Tekna and Renault Clio 0.9 TCE

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerAs we endeavour to continue our innovation, existing products are no exception. Therefore, we have now released the all new version of “FMDV004.” It has been difficult to improve upon this market leading design, but we have done just that, offering improved dual piston action with increased response time resulting in an very audible blow off sound when the throttle is lifted. In addition, we now include an extensive fitting kit for easy conversion from a stock recirculation valve to this compact blow off valve.Highlights:Improved external aestheticsA myriad of incremental engineering enhancements to all internal components have been carried out to offer faster response times and longer service intervalsThe piston uses heat stabilised Viton O-ringsA super durable and responsive aluminium pistonA fully serviceable valve that is rebuildable in minutesCovered by the unique Forge Lifetime Warranty**Terms and conditions apply. In the Box1x FMDV15 Atmo Valve1x Length of silicone hose 1x Silicone blanking cap1x Brass T-Peice1x 25mm Ally Blanking Plug2x Hose clamps10x Cable ties1 x Forge StickerPlease note that 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 everyone’s application will be compatible with a valve that vents the charge air into the atmosphere.Forge Motorsport nor any of its Authorised 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.

£136.33£113.61 (ex. VAT)
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Forge Porsche 997 Gen 2 Atmospheric Valve Kit

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerThis is a Atmospheric Valve Kit for the Porsche 997 Gen 2 .The kit is perfect replacement for the OEM valve, which is prone to failure when the engine has been tuned or had an upgrade to the engine management software, whilst also giving you the incredible sound as you lift off the throttleFollowing the resounding success of our direct replacement valves for other OEM applications, we have just completed development and testing of a pair of direct replacement bypass valves specific to the Porsche 997 Gen 2 twin turbo application. These direct replacement units utilise full billet aluminum construction and a piston based design that has proved successful throughout our entire range of application specific, and universal valve products.Viton brand high temperature o-rings are used for sealing of the piston and the valve cap, Mobil1 fully synthetic bearing grease for lubrication of the internals, and a proprietary spring rate is used to handle the widest possible range of boost pressures. In addition we supply silicone hoses that are capable of withstanding greater temperatures and pressures, often associated with tuned or track use vehicles.A choice of either Black or Silver valves are the only option for this kit. Please choose using the options above. In The Box: 2 x FMDVPA Valves2 x 25mm Blanking Plugs2 x 25mm Short Silicon Hoses4 x 32mm Hose Clamps1 x Instructions1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below."Excellent valves, amazing loud blow off sound"

£136.34£113.62 (ex. VAT)
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Forge Piston Recirculating Valve for Subaru Impreza 2001 Onwards

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerAlloy Recirculating Valve available to fit the Impreza 2001 onwards models including the 2009 GR Sti. Made from billet aluminium, this recirculating diverter valve dumps the charge-air back into the air intake system keeping external noise to a minimum. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.In The Box:1 x FMDVSUB03 Valve1 x Forge StickerIf 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 application, please contact us.

£139.21£116.01 (ex. VAT)
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Forge Subaru Impreza V5 Piston Ram Dump Valve (Flange Mounted)

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerAlloy Atmospheric Ram Dump Valve, flange mounted available to fit the Impreza V5. Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.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 Authorised 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. In The Box:1 x FMDVV5012 Valve1 x 28mm Blanking Plug1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.

£139.21£116.01 (ex. VAT)
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Forge Recirculation Valve for Subaru Impreza 2008 WRX

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerA direct bolt on replacement Recirculation valve for the 2008 Subaru Impreza WRX with either the 2.0 litre or 2.5 litre engines.Please note: This valve will not fit the 2008 STi. Please also note: The original diamond shaped mounting bracket O-ring is to be retained and fitted to the Forge valve. In The Box:1 x FMWRX3 Valve1 x Uprated Yellow Spring1 x Uprated Red Spring1 x 40mm Hose Clamp1 x Instructions1 x Forge StickerIf you are unsure if this product is suitable for your application, please contact us.

£139.21£116.01 (ex. VAT)
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Forge Piston Ram Dump Valve (With Filter)

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerMade from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. For applications where the valve may be subject to dusty conditions a filter is used to prevent particals entering the valve. 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. This valve is available in a polished alloy finish only.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. In The Box:1 x FMDVF005 Valve1 x Filter1 x Forge Sticker

£140.09£116.74 (ex. VAT)
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Forge Recirculation Valve for Ford Focus RS MK3 & Vauxhall Adam, Astra, Corsa, and more

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerThis is a piston design recirculation valve that is a direct replacement for the original fitment. This valve gives greater longevity than the diaphragm (OEM) valves but also benefits from its ability to be fitted with different springs when the boost pressure has been increasded or the engine has been modified. In The Box:1 x FMDVCS14R Valve1 x Uprated Yellow Spring1 x Forge Sticker

£140.17£116.81 (ex. VAT)£164.91£137.43 (ex. VAT)
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Forge Subaru Impreza MY 93-95 Valve and Fitting Kit

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerAlloy Atmospheric Ram Dump Valve available to fit the Impreza MY 93-95. Made from billet aluminium, this atmospheric diverter valve dumps the charge-air to atmosphere creating the "Whoosh" sound most commonly associated with rally cars when the throttle is lifted. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably.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 Authorised 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. In The Box:1 x FMDVK013A Valve1 x S25-19 Silicon Hose3 x 35mm Hose Clamps1 x 20mm Blanking Plug1 x Forge Sticker

£140.30£116.92 (ex. VAT)
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Forge Saab 900 T16S Valve and Fitting Kit

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerA Dump valve and fitting kit for Saab 900 T16S. (Classic shape). Please note: Due to the change in the engine management electronics, this kit is not suitable for the newer versions of the Saab 900. In The Box:1 x FMFK060 Valve1 x 1000mm of 4mm Vacuum Tube2 x 35mm Hose Clamp4 x 70mm Hose Clamp1 x 5mm T Piece1 x Silicon Reducer1 x Silicon Straight1 x C60 Silicon Coupler1 x Forge Sticker

£143.10£119.25 (ex. VAT)
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Forge Ford Focus ST250, Vauxhall Astra, Corsa, Zafira and Bentley Recirculation Valve

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerDesigned as a direct replacement for the OEM valve which is prone to failure when the engine has been tuned or had an upgrade to the engine management software. This valve is complete and ready to install with no fitting kit required.This valve is supplied assembled with our "green" coded spring which is suitable for standard or mildly tuned engines, and also comes with an uprated 'yellow' coded spring. This valve is suitable for:Vauxhall/Opel Astra G or H type Z20LET EngineAstra VXR J TypeAstra 1.6 GTCCorsa VXR 1.6 Turbo Z16LER EngineVauxhall Zafira A or B with Z20LET EngineBentley Continental GT 2003-11Focus ST250 2015 Onwards In The Box:1 x FMDVK04D Valve1 x Uprated Yellow Spring1 x Forge StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.Please note: In certain car models the removal fo the O.E mounting bolts may be better facilitated by grinding down the short leg of the appropriate Allen key to 10mm long

£143.99£119.99 (ex. VAT)
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Forge Blow Off Valve and Kit for BMW 135/235 F20

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerThis Blow Off, or Dump valve, is for the BMW 135/235 N55 3.0 Turbo engines 2012-2013 are PWG (Pneumatic Waste Gate) , that have the electronically controlled bypass valves. It is recommended for any vehicle where the boost pressure has been increased by an ECU software upgrade and for unmodified vehicles operating in warmer climates, as a solution to the many failures that have occurred. Unfortunately the failure doesn’t always result in a check engine light as the valve can still be blown open by the boost pressure, so you may not be aware that you are losing power due to this. This prevents the diaphragm from sealing.Our alternative is a fully engineered solution offering both significantly improved reliability. Our valve is piston based, with no diaphragm to fail, and of all aluminium construction, it replaces the original unit with a pressure/vacuum operated piston valve that still also retains the desirable OEM ECU control, over valve actuation. In The Box:1 x FMDVF20A Valve1 x 3000mm of 4mm Vacuum Tube1 x 100mm of 6mm Vacuum Tube1 x 50mm of 6mm Vacuum Tube1 x Solenoid, Bracket, and Screws10 x Cable Ties1 x Uprated Blue Spring1 x 8-4-8 T Piece1 x Forge USB Instructions1 x Forge Keyring and StickerIf you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.

£144.57£120.48 (ex. VAT)
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Forge Mitsubishi Eclipse Generation 1 Recirculation Valve

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We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerMade from billet aluminium, this recirculating diverter valve dumps the charge-air back into the air intake system keeping external noise to a minimum. This increases both quicker throttle response and higher clamping load to maintain boost pressure more reliably. Available in Polished only.

£147.96£123.30 (ex. VAT)
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Forge Recirculation Valve for Renault, Volvo, Hyundai and Kia

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerThis has been designed by Forge Motorsport as a direct replacement for the compressor bypass valve (CBV) that bolts directly to the turbo . It replaces the OEM diaphragm type valve with a piston design that allows for tuning with interchangable springs. For those running higher boost pressures after software tuning this really is a must to ensure that you do not lose boost through the valve.In The Box:1 x FMDVRMR Valve1 x Uprated Yellow Spring1 x Uprated Blue Spring3 x M6 x 16 Socket Cap Bolts1 x Forge StickerThis product comes assembled with a green spring but is supplied with an additional uprated yellow spring. If your car is a Renault Megane RS250, 265, or 275, then this spring should be fitted instead of the stock green spring. If you wish to further tune this product to fit the needs of your engine, please see the spring tuning kit below.Replaces OEM Part No. 55558627 (Saab)If you are unsure if this product is suitable for your application, please contact us. Complimentary ProductsBlow Off ValveActuatorTurbo Blanket

£149.99£124.99 (ex. VAT)
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Forge Atmospheric Dump Valve for Ford Focus 1.5T

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We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerThis valve is for the turbocharged 1.5-litre EcoBoost petrol engine. It is recommended for any vehicle where the boost pressure has or is going to be increased by an ECU software upgrade,Our alternative is a fully engineered solution, offering significantly improved reliability. Our valve and installation kit replaces the original unit with a pressure/vacuum operated piston valve, that still also retains the desirable OEM ECU control over valve actuation. This product has been thoroughly designed and tested with the expressed intent of offering improved valve response and maintaining ECU control while resulting in absolutely NO fault codes, NO check engine lights, and no adverse effects of any kind.All of the necessary components and detailed instructions are included and everything is designed to make installation as simple as possible. In the Box:Solenoid & Bracket Wiring Harness Vac Tap Blue idle springForge Keyring & Sticker4mm Vacuum HoseCable Ties (x10)Instructions

£159.78£133.15 (ex. VAT)
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Forge Suzuki Swift Sport 1.4 and Vitara 1.4 BoosterJet Dump Valve

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THIS DOES NOT FIT THE HYBRID VERSION OF THIS ENGINEOur uprated valve for the Suzuki Swift Sport 1.4 ZC33S (also fits the Vitara 1.4 BoosterJet, providing the engine cover is removed) has been expertly designed and manufactured in the UK, meaning we can provide another industry leading valve for your vehicle.Highlights:Utilising world leading springs for more precise operation and consistencyAll internal and external components have been made in the UK, ensuring top quality, and offering a valve with faster response times.The piston uses heat stabilised Viton O-ringsLubricated with high temperature Mobil1 grease to ensure a long life with minimal wear and very long service intervalsA super durable and responsive aluminium pistonFully serviceable and rebuildable in minutesAvailable in anodised blackUnlike other valves on the market, ours produces no check engine lights (EML)Covered by the unique Forge Lifetime Warranty*The Forge Motorsport atmospheric valve is more than just a replacement for the OE diaphragm operated bypass valve Part No.18119-65H70. Our valve offers serviceability, rapid response, great sound, and can be uprated to your tuning needs.In The Box:1 x FMDV21 Valve1 x 34mm P Clip1 x 4mm Vacuum Tube1 x Custom Silicone Hose1 x Blanking Plug2 x Cable Tie1 x Bracket2 x 32mm Hose Clamps2 x Allen Cap Bolts2 x Washers1 x Nyloc Nut1 x Forge StickerWe recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerCheck out our video instructions to help you with the installation!

£159.99£133.33 (ex. VAT)