TEIN has introduced their S.Tech springs for the 2015+ WRX and STI. TEIN S.Tech Springs are an excellent step towards suspension tuning. They offer a noticeable drop for a more aggressive appearance and increased road holding capability. Designed to be used with OEM or OEM replacement shocks, each application is road tested in North America for the proper balance between performance and comfort. Comes with a 1 year limited warranty.