Name: APR Gen 5 Haldex Upgraded Pressure Relief Valve Spring - Stage 2
Brand: APR
SKU: aprMS100267
Price: 269 EUR
Availability: InStock

APR Gen 5 Haldex Upgraded Pressure Relief Valve Spring - Stage 2

Article nr:

aprMS100267

APR Stage 2 Spring for Gen 5 Haldex

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The APR Stage 2 Spring Upgrade for Haldex is the hardware component that unlocks the full potential of APR’s AWD controller calibration for Gen 5 Haldex. Engineered as a direct replacement for the factory clutch pressure relief spring, this precision-calibrated upgrade enables significantly higher achievable clamping pressures under increased torque demand while maintaining OEM-level drivability and system integrity. When paired with APR Stage 2 software for Haldex, the upgraded spring supports dramatically increased clutch pressure during high-load conditions, improving torque transfer to the rear axle and delivering faster, more consistent AWD engagement during aggressive launches and performance driving. The result is improved traction, stronger launches, and enhanced confidence when putting power to the pavement. Unlike spring-only solutions that require disassembling and modifying the factory valve assembly, the APR Stage 2 hardware is engineered as a simple, direct replacement component minimizing installation complexity while preserving factory safeguards and control architecture. Designed to work seamlessly within the OEM Haldex control strategy, the APR Stage 2 Spring Upgrade completes a fully integrated drivetrain performance solution allowing increased torque capability without compromising daily drivability or long-term reliability.

Our instrumented Haldex unit achieved 22+ Bar clutch pressure increase over Stage 1 & nearly 30 Bar over stock

APR Stage 2 Spring Upgrade for Haldex is supplied as a fully assembled

direct replacement part.

Increased pressure means an increase in torque capacity transferrable through the Haldex unit

APR recommends the proper APR Service Kit for Haldex when installing spring upgrade

Stage 2 requires only a simple spring change & software flash!