{"product_id":"apr-ms100267","title":"APR Gen 5 Haldex Upgraded Pressure Relief Valve Spring - Stage 2","description":"\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOur instrumented Haldex unit achieved 22+ Bar clutch pressure increase over Stage 1 \u0026amp; nearly 30 Bar over stock\u003c\/li\u003e\n\u003cli\u003eAPR Stage 2 Spring Upgrade for Haldex is supplied as a fully assembled, direct replacement part.\u003c\/li\u003e\n\u003cli\u003eIncreased pressure means an increase in torque capacity transferrable through the Haldex unit\u003c\/li\u003e\n\u003cli\u003eAPR recommends the proper APR Service Kit for Haldex when installing spring upgrade\u003c\/li\u003e\n\u003cli\u003eStage 2 requires only a simple spring change \u0026amp; software flash!\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2012-2013 Audi A3 Quattro\u003c\/li\u003e\n\u003cli\u003e2015-2019 Audi A3 Quattro\u003c\/li\u003e\n\u003cli\u003e2017-2019 Audi RS3\u003c\/li\u003e\n\u003cli\u003e2015-2019 Audi S3\u003c\/li\u003e\n\u003cli\u003e2014-2019 Audi TTS Quattro\u003c\/li\u003e\n\u003cli\u003e2019 Volkswagen Arteon\u003c\/li\u003e\n\u003cli\u003e2012-2013 Volkswagen Golf R\u003c\/li\u003e\n\u003cli\u003e2015-2019 Volkswagen Golf R\u003c\/li\u003e\n\u003cli\u003e2018 Volkswagen Passat\u003c\/li\u003e\n\u003cli\u003e2015 Volkswagen Passat\u003c\/li\u003e\n\u003cli\u003e2016-2017 Volkswagen Passat\u003c\/li\u003e\n\u003cli\u003e2015-2017 Volkswagen Passat\u003c\/li\u003e\n\u003cli\u003e2017 Volkswagen Passat\u003c\/li\u003e\n\u003cli\u003e2019 Volkswagen Passat\u003c\/li\u003e\n\u003cli\u003e2016 Volkswagen Passat\u003c\/li\u003e\n\u003cli\u003e2015-2016 Volkswagen Tiguan\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cem\u003ePlease verify exact fitment (engine, submodel, and trim) before purchasing.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e MS100267\u003c\/p\u003e\u003cp style=\"color:#666;font-size:0.9em;\"\u003eImages are for illustration purposes only; actual product may vary.\u003c\/p\u003e\u003cp style=\"color:#cc0000;\"\u003e\u003cstrong\u003e⚠ WARNING:\u003c\/strong\u003e This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.\u003c\/p\u003e","brand":"APR","offers":[{"title":"Default Title","offer_id":43051788304478,"sku":"PST-MS100267","price":144.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0433\/9049\/files\/acd57c5804a735ab4c3b41167d2dbc29L.jpg?v=1784838490","url":"https:\/\/pitstoptuning.com\/products\/apr-ms100267","provider":"PitStopTuning","version":"1.0","type":"link"}