Tein S Tech Springs STI (2005-2007) Universal This is crucial for proper

This is crucial for proper air fuel ratios and ECU engine management

Popular in many BMW transmissions and in most Honda and Acura transaxle applications

Please choose 16+4 or 20pc when selecting an item for purchase

Scion tC's that have more than just the basic bolt-ons and/or forced induction upgrades will want to get the FX300

as they are constantly balancing the engine to max efficiency via the internal inertia ring

Tein S Tech Springs STI (2005-2007) Universal This is crucial for properTein S. Tech Springs for the Subaru are an excellent step towards suspension tuning. They offer a more aggressive appearance and increase road holding capability. Designed to be used with OEM or OEM replacement shocks. Each Subaru WRX application is road tested in North America for the proper balance between performance and comfort. Spring Rate Drop Specs: Spring Rate (02 03 WRX): F 218lb in R 157lb in Drop (02 03 WRX): F 2. 0in R 0. 7in Spring Rate