Cobb Stage 1+ Drivetrain Package White Knob Black Collar Subaru STI 2004-2021 | 215X01P-W-BK Catalytic Converter Direct Fit and at high boost ranges

and at high boost ranges the Secondary Valve also opens

Part #: IS-GT-S13

and provides the foundation for installing a quick-release steering wheel system

Questions about fitment

Cobb Stage 1+ Drivetrain Package White Knob Black Collar Subaru STI 2004-2021 | 215X01P-W-BK Catalytic Converter Direct Fit and at high boost rangesUpgrade your STIs shifting precision and feel with the COBB Stage 1+ Drivetrain Package for the 6speed manual. This complete bundle includes front and rear shifter bushings, a double adjustable shortthrow shifter, and a COBB knob everything needed to tighten up factory shift slop and customize your throw and shift ergonomics. This comprehensive drivetrain upgrade allows you to reduce slop in the shifter system, adjust throw length, and improve driver