WARNING: This product can expose you to chemicals that are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.The APR Stage 2 Spring Upgrade for Gen 5 Haldex is the essential hardware component required to maximize the torque capacity of your AWD system. Designed as a direct, fully assembled replacement for the factory clutch pressure relief spring, this upgrade unlocks the true potential of the APR Stage 2 Haldex software. By enabling significantly higher clamping pressures—achieving increases of nearly 30 Bar over stock—this spring ensures that your rear wheels receive the power they need during aggressive launches and high-torque demands.
Engineered for simplicity and performance, the APR Stage 2 hardware preserves OEM-level drivability and system safeguards while delivering a more visceral, rear-biased feel when you need it most. Unlike complex modifications that require disassembling the factory valve, this "drop-in" spring allows for a faster, more reliable installation. The result is a more capable drivetrain that provides enhanced traction, stronger launches, and the confidence to put high power to the pavement without clutch slip.
Key Features:
- Massive Pressure Increase: Capable of achieving over 22 Bar more pressure than Stage 1, and nearly 30 Bar over the factory setting.
- Enhanced Torque Transfer: Higher clamping pressure translates directly to increased torque capacity and faster rear-axle engagement.
- Simplified Installation: Supplied as a fully assembled, direct-replacement part; no modification of factory valves required.
- Performance Consistency: Delivers stronger, more reliable launches and improved traction during spirited or track driving.
- OEM Integrity: Works seamlessly within the factory control strategy to preserve daily drivability and long-term Haldex reliability.
- Software Optimized: Specifically designed to be paired with APR Stage 2 Haldex Software for a fully integrated solution.
Performance Data:
| Calibration Level | Clutch Pressure Increase (Approx.) |
|---|---|
| Stock Haldex | Baseline (Factory Limited) |
| APR Stage 1 (Software Only) | Increased response & engagement |
| APR Stage 2 (Spring + Software) | +30 Bar over Stock |
Vehicle Compatibility:
Designed for vehicles equipped with the Gen 5 Haldex All-Wheel Drive System, including:
- Volkswagen: Golf R (Mk7/Mk7.5), Arteon, Tiguan
- Audi: S3 / RS3 (8V/8V.5), TT / TTS / TT RS (8S), Q3
Maintenance Requirement: APR highly recommends performing a Haldex service using a proper APR Service Kit (including fresh high-performance fluid) when installing this spring upgrade to ensure maximum component longevity.
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