The Go Fast Bits T9125 Mach 2 TMS Recirculating Diverter Valve is engineered for performance-driven enthusiasts seeking reliable boost control and enhanced throttle response. This valve features a 25mm inlet and a 25mm outlet, making it a direct replacement for factory bypass valves in various turbocharged models.
The Mach 2 can be converted to a 100% atmosphere venting setup with an additional kit, allowing for the characteristic sound of venting without the risk of stalling the engine.
This diverter valve is confirmed to fit the following models:
The Go Fast Bits T9125 Mach 2 TMS Recirculating Diverter Valve is a practical upgrade for turbocharged vehicles, ensuring improved performance and reliability without the noise of traditional venting solutions.
Other Part Numbers:
Go Fast Bits #gfbT9125
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
1988 Audi 80 |
80 | 1988 |
|
1998-2003, 2015-2016 Audi A3 |
A3 | 1998-2003, 2015-2016 |
|
1997-2009 Audi A4 |
A4 | 1997-2009 |
|
1999-2006 Audi TT MK1 |
TT MK1 | 1999-2006 |
|
1999-2009 Saab 5-Sep |
5-Sep | 1999-2009 |
|
1999-2005, 2014-2017 Volkswagen Beetle |
Beetle | 1999-2005, 2014-2017 |
|
2000-2004 Volkswagen Golf MK4 |
Golf MK4 | 2000-2004 |
|
2005 Volkswagen Golf MK5 |
Golf MK5 | 2005 |
|
2000-2004 Volkswagen Jetta |
Jetta | 2000-2004 |
|
1998-2005 Volkswagen Passat |
Passat | 1998-2005 |

It all started with the passion of John Adrian to create something that other aftermarket parts cannot produce. Most parts he encountered are either of low quality and are made out of inferior materials.
He decided to take matters into his own hands and started designing, testing, and developing parts that would help improve the performance of his vehicle. Using his own car as a personal testbed, he created products that other enthusiasts later noticed, which has become the start of Go Fast Bits.
Your Source of Performance PartsThe company offers various performance parts such as boost controllers, blow-off valves, short shifters, pulley kits, and more. John Adrian also acts as the chief engineer of the company. Using his 35 years of experience manufacturing high-quality parts for the automotive industry that includes Original Equipment Manufacturers (OEM) parts, he was able to produce parts that meet the demands of his customers.
Quality Made ProductsAll their parts are meticulously made using the highest grade material available to ensure product durability and reliability. Each piece is manufactured to fit perfectly on the vehicle and tested to ensure optimum performance and nothing less.
Purchase Go Fast Bits Parts At Vivid RacingIf you are in the market for high-quality products that would help improve your vehicle's performance, then Go Fast Bits is a brand that you can trust. Their products are proven to deliver performance without compromising the daily drivability of your vehicle. Whether your car is used as a grocery getter or a weekend racer, Go Fast Bits has the right parts for you.
To know more about the company, visit Vivid Racing and check out their parts list that fits your specific requirement.