The Tein SKSB0-S3B00 S.Tech Lowering Springs are engineered to enhance the handling and appearance of your 2015–2021 Subaru WRX or WRX STI. Front Drop: 1.2" (WRX), 0.8" (STI). Rear Drop: 1.0" (WRX), 0.6" (STI).
With the replacement of the stock springs I consider the upgrade a big change, the car rides more stiffer and is more improved on handling. Definitely I will recommend this springs for your first time suspension turning.