2004- 2019 Subaru WRX STi(2.5L DOHC 4cyl EJ257; 6-speed). Disc style: Sprung floating center hub. 2006 - 2009 Subaru Legacy GT Spec B ( 2.5L DOHC 4cyl EJ257; 6-speed). Clutch cover: Aircraft high quality aluminum alloy.
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