Tein Street Basis Z Coilovers WRX / STI (2015-2018) BMW The SB10-HDSS kit from ACT

The SB10-HDSS kit from ACT for the Subaru STI features ACT's most popular Heavy Duty pressure plate and most popular street disc

The 6-pad spring-centered race disc features a spring-center to properly damp torsional vibrations and can resist failure under harsh conditions

Reduce drivetrain shudder under hard acceleration by installing a Perrin Pitch Stop mount

Enclosed airbox/heat shield

the Perrin pulley avoids these potential problems by exactly copying the OEM piece

Tein Street Basis Z Coilovers WRX / STI (2015-2018) BMW The SB10-HDSS kit from ACTThe Tein Street Basis Z Coilovers for the 2015+ Subaru WRX and STI are some the best cost effective and quality set of coil overs on the market. This is a great suspension system for those who want something more aggressive than lowering springs. The Street Basis coil overs supersede Tein's Basic coil over design made with improvements in design and performance. These coil overs feature steel construction with twin tube internal components. These