Powerflex Black Series Car: Mitsubishi - Lancer Evolution IV, V & VI RS/GSR (1996 - 2001) description: Rear Diff Front Mounting Bush, RS Models Only purchased parts package: 2 installation location: rear notice: Fits RS models and non AYC vehicles only. For vehicles fitted with AYC use PFR44-120. Diagram reference: 14 Part no.: PFR44-420BLK