• Go Fast Bits Mach 2 TMS Recirculating Diverter Valve - Subaru 2015+ WRX/Forester T9107 Photo - Primary
  • Go Fast Bits Mach 2 TMS Recirculating Diverter Valve - Subaru 2015+ WRX/Forester T9107 User 9
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Go Fast Bits Mach 2 TMS Recirculating Diverter Valve - Subaru 2015+ WRX/Forester

Go Fast Bits Mach 2 TMS Recirculating Diverter Valve - Subaru 2015+ WRX/Forester

$207.36
$207.36
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Emissions

⚠️ RACING/COMPETITION Use Only

California: Non-compliant parts may be used only on designated closed-course racing vehicles that are never registered for highway use.

Other: Please consult your local statutes and ordinances to ensure compliance with regional emissions standards.

Shipping & returns

Shipping details

In-stock orders are processed within 48 hours; transit time is additional.

International orders include export processing and customs clearance. Duties, taxes and brokerage are extra; final freight charges may change after remeasurement.

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Returns

Need help with a return? Request authorization within 30 days of delivery for eligible unused, uninstalled items. See details for exclusions and applicable fees.

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Return details & how to start

Request return authorization (RMA) within 30 days of delivery for eligible items. Keep items unused and uninstalled, with original packaging and accessories. Electronics, liquids, special orders and other categories are excluded.

Email sales@frsport.com with RETURN and your order number in the subject to request an RMA. Please wait for return authorization before sending your item back.

Wrong part/size or change of mind: a 20% return processing fee applies, plus applicable shipping costs.

Original shipping is non-refundable. For orders shipped free, the actual outbound shipping cost is deducted from the refund. Return shipping is prepaid by the customer.

After payment capture, cancellations and refunds generally incur a 5% processing fee, except for our error, confirmed defects or confirmed carrier loss. The 5% and 20% fees do not stack; only the greater applicable fee applies. Store credit waives the 5% fee, but applicable return fees remain.

Missing, incorrect or transit-damaged items: report within 3 business days of receipt with photos of the product and packaging.

For defective items, contact us for help with the manufacturer's warranty process. The manufacturer decides the claim.

Mach 2 TMS Recirculating Diverter Valve Direct Fitment

Part number 5925 kit available to convert to atmosphere venting BOV

The simple & essential MOD for 30% quicker boost

Utilising proven TMS technology to ensure dependable boost holding and optimum throttle response.

If you don't need the patented venting bias adjustment feature of the Respons or Deceptor Pro, the Mach 2 is the answer.

Using GFB's TMS technology the Mach 2 can help return the engine to peak boost up to 30% faster than a factory diverter valve when shifting gears (more information below).
  • Recirculation model for direct factory replacement for performance without the noise 
  • Atmosphere venting kits to convert the recirculating valve if you want noise with your performance
Like the Respons and Deceptor Pro II, the Mach 2 is available in a range of bolt-on kits for most popular turbo models. And when we say "bolt-on", that's exactly what we mean! No additional adaptors, parts or vehicle modifications are required - simply remove the factory bypass valve and replace it with the Mach 2 - it's that simple!
The Mach 2 is configured as a 100% recirculating valve (i.e. bypass, plumb back) and add-on kits are also available to convert to 100% atmosphere venting. Use the recirc model for direct factory replacement when you want the performance WITHOUT the noise! Add the conversion kit when you want some noise with your performance!
Factory bypass valves have two main shortcomings - one is that they are typically designed to start opening above a certain pressure to protect the engine, and the other is they are not optimized for throttle response. Oh, and you can't vent them to the atmosphere without stalling your engine.
The Mach 2 solves all of these issues. It can effectively hold unlimited boost (unlimited in that no turbo could ever produce enough pressure to damage it), and the TMS technology ensures maximum throttle response. Oh, and you CAN vent with the atmo conversion to the atmosphere without stalling your engine.


Vehicle Fitments:

Year Make Model Submodel
2018 Subaru Forester Limited, Premium, Touring
2014 - 2017 Subaru Forester X, XS, XSL
2014 - 2018 Subaru Forester XT, 2.0XT Touring, 2.5i Touring, 2.5i Limited, 2.5i, 2.0XT Limited, 2.0XT Premium, 2.5i Convenience, 2.5i Premium
2018 - 2020 Subaru WRX 6 Man, CVT
2015 - 2020 Subaru WRX Limited, Premium, Base
2017 - 2020 Subaru WRX Sport-tech, Sport
2015 - 2016 Subaru WRX STI
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Vehicle fitment