Gen lV

Gen IV Haldex systems are used in some of the most popular VAG performance platforms — but the factory calibration is conservative, slow to react, and designed for stability rather than performance. Ramtech’s Gen IV controllers unlock the true potential of the AWD system with faster clutch engagement, harder rear‑axle lockup, and dramatically improved traction under load.

Whether you choose Competition, Race, or Switchable, every Gen IV upgrade delivers a sharper, more aggressive AWD behavior that transforms how the car launches, corners, and responds to throttle input.

Why upgrade your Gen IV Haldex with Ramtech?

• Much faster clutch activation than OEM
• Stronger rear‑axle torque transfer
• More rear‑biased handling for performance driving
• Improved stability during acceleration and corner exit
• Multiple selectable AWD modes (OEM+, Sport, Race, Competition)
• 100% plug‑and‑play installation

Switchable Gen IV — full control from the driver’s seat

Our switchable controllers let you change AWD behavior instantly. Perfect for drivers who want maximum grip on track, predictable handling on the street, and full control in all conditions.

Recommended add‑ons

Pair your controller with the Remote/Switch Gen II/IV for instant mode selection without leaving the cabin.

Ideal for drivers who want

• Faster launches
• More aggressive rear‑axle engagement
• Better traction in rain, snow, and high‑load situations
• A sharper, more responsive AWD system
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