The PERRIN 22mm rear sway bar bushing fits 2004–2007 Subaru STi and 2006–2007 WRX applications as a direct replacement bushing for the listed rear anti-roll bar size. It restores correct sway bar mounting and helps maintain handling balance by reducing unwanted movement at the bar mount. Confirm the 22mm rear bar dimension and listed model years for proper fit before installation.
PERRIN 04-07 Subaru STi / 06-07 WRX 22mm Rear Sway Bar Bushing