Mach 2 T9125 TMS Recirculating Diverter valve (25mm inlet, 25mm outlet)

🔧 Product Description

The GFB Mach 2 T9125 TMS Diverter Valve is a high-performance, direct replacement upgrade from Go Fast Bits, designed for a wide range of turbocharged vehicles—particularly VAG 1.8T platforms.

Featuring proven TMS (Turbo Management System) technology, the Mach 2 delivers up to 30% faster boost recovery, improved throttle response, and superior boost holding compared to factory diverter valves—all in a simple, bolt-on solution.

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⚙️ Key Features

• Part Number: T9125
• Inlet/Outlet Size: 25mm / 25mm
• 100% recirculating (plumb-back) design
• Proven TMS technology
• Up to 30% faster boost recovery
• Direct bolt-on replacement – no modifications required
• Optional atmosphere conversion kits available
• Handles extreme boost levels (virtually unlimited)
• High-quality anodised aluminium construction

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🏁 Performance Benefits

• ⚡ Faster return to peak boost between gear shifts
• 🚀 Improved throttle response and acceleration
• 🔒 Eliminates boost leaks found in factory valves
• 🔊 Flexible setup – quiet recirc or loud atmo (optional)
• 🛠 Enhances turbo efficiency and drivability

Factory diverter valves often:

• Open prematurely under boost
• Restrict performance potential
• Cannot vent to atmosphere without stalling

👉 The Mach 2 solves these issues with precision TMS control.

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🔬 TMS Technology Explained

GFB’s Turbo Management System (TMS) ensures:

• Valve remains fully sealed under boost
• Opens instantly on throttle lift
• Maintains maximum turbo efficiency

Result: faster spool, smoother shifts, and stronger power delivery.

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🔄 Venting Options

• ✅ Recirculating (Standard)
  • OEM-style quiet operation
  • Perfect for daily drivers
• 🔊 Atmosphere (Optional Conversion Kit)
  • Aggressive blow-off sound
  • No stalling issues

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🚗 Vehicle Applications

Audi / VW / Skoda / SEAT (VAG 1.8T & Turbo Models)

• Audi A4 B5 / B6 1.8T
• Audi S3 8L
• Audi TT 8N
• Volkswagen Golf GTI Mk4
• Volkswagen Bora Mk4
• Volkswagen Passat B5
• Skoda Octavia Mk1
• SEAT Leon Cupra Mk1

Ford Australia

• Ford Falcon XR6 Turbo (BA/BF/FG)
• Ford Territory Turbo

Mazda

• MX-5 Turbo NB

Saab

• 9-3 / 9-5 Turbo models

…and many more turbocharged applications requiring 25mm hose connections.

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🔩 Specifications

• Product Type: Recirculating diverter valve
• Part Number: T9125
• Inlet/Outlet: 25mm / 25mm
• Technology: TMS (Turbo Management System)
• Venting: Recirc standard / Atmosphere optional
• Fitment: Direct bolt-on
• Boost Capacity: Virtually unlimited
• Brand: Go Fast Bits (GFB)

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🛠️ Installation Notes

• Remove factory diverter valve
• Install Mach 2 T9125 directly in place
• No adaptors or modifications required
• Optional atmosphere kit can be added anytime

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💡 Why Choose the T9125 Mach 2?

If you want:

• A reliable OEM+ upgrade
• Faster boost response without complexity
• Compatibility across a huge range of turbo vehicles

👉 This is one of the best plug-and-play diverter valve upgrades available.