Advanced Pro Plus Racing Circuit Spec Coilovers – Subaru WRX & STi 2015-2021

FRONTREARSPRING RATES14k16kUPPER MOUNTPillowball w/ Camber PlatesAluminum w/ Hardened RubberORPillowballSTRUT DESIGNInvertedStandardApplication Notes:Fits 2015-2021 WRX & STi ModelsPlease select desired coilover model, 2-way or 3-way when orderingPlease select desired rear upper mount style when orderingYSR USA Advanced Pro Plus Circuit Coilover SystemEngineered for peak performance on the track, the YSR USA Advanced Pro Plus Circuit Coilover System is our top-tier, motorsport-grade suspension setup, developed specifically for competitive circuit racing. Designed with input from professional drivers and race engineers, this system is available in both 2-way and 3-way adjustable configurations, delivering superior adjustability, consistency, and precision handling under extreme driving conditions.Whether you choose the 2-way adjustable version (rebound compression) or the 3-way adjustable version (independent high-speed compression, low-speed compression, and rebound), this system gives drivers total control over suspension dynamicsallowing precise tuning for various circuit layouts, track surfaces, and driving styles.Each kit is built to order with vehicle-specific valving and spring rates tailored to high-grip tarmac use. Whether you're dialing in balance at a technical course or chasing lap times on a high-speed track, the Advanced Pro Plus Circuit kit gives you the control and feedback needed to push limits confidently.Key Features: 2-Way or 3-Way Adjustable DampingChoose from:2-WAY EXTERNAL RESERVOIR2-way adjustable dampers with independent rebound and compression control, ideal for serious track users seeking simplicity with performance. 3-WAY EXTERNAL RESERVOIR3-way adjustable dampers featuring independent 17 clicks of high-speed compression, 20 clicks of low-speed compression and 33 clicks of rebound damping adjustment for maximum fine-tuning.Monotube Damper DesignDelivers consistent performance and superior heat dissipationcritical during extended sessions and endurance racing.High-Precision Remote ReservoirsExternal reservoirs allow increased oil capacity and thermal stability, ensuring damper performance stays consistent lap after lapCustom Spring Rates & ValvingEvery kit is tailored to your vehicle and race needs, offering ideal balance, grip, and compliance on tarmac surfacesLightweight ConstructionCNC-machined components and aluminum shock bodies reduce unsprung weight without compromising strength.Camber Adjustable Top Mounts (on applicable models)Helps dial in aggressive track alignment setups for maximum front-end grip and tire contact.Important Considerations When Choosing Circuit Spec SuspensionPros:Choice of 2-way or 3-way adjustment to suit driver needs and tuning complexityConsistent, fade-resistant performance during long track sessionsBuilt-to-order specs ensure optimal performance for specific vehicle setup and weightImproved lap times through superior grip and chassis controlEnhanced steering feedback and cornering stability at high speedsIdeal for time attack, road racing, and professional-level motorsport applicationsCons:Not recommended for street use due to stiffer valving and higher NVH (Noise, Vibration, Harshness)Requires experienced setup and tuning for best resultsHigher cost compared to 1-way systems due to advanced featuresMay need frequent adjustments to adapt to different tracks or conditionsReduced ride comfort outside of track environmentsThe Advanced Pro Plus Circuit Coilover System is a purpose-built tool for those who demand uncompromising performance and adjustability on the track. Whether you prefer the efficient control of a 2-way setup or the deep tuning capabilities of a 3-way system, this kit is designed to deliver professional-level handling and feedback for your podium pursuit.High quality components are adopted to ensure product durability and stability. Each application is test fit and completely road tested to guarantee perfect performance and comfort.Please note that ALL of our coilovers are hand built and made to order. Please allow3-4 weeksfor delivery.**Photographs shown are stock photos; Actual items may vary in appearance or features. Please contact us for specific features of each kit.