The Competition Clutch Domestic Stage 3 - 2250 Brass Plus/Cerametalic Clutch Kit is engineered to deliver a 65-70% increase in Torque capacity for heavy duty street use. This unit is designed for the cost sensitive enthusiast who still enjoys the benefit of the dissimilar materials. This combination allows superb holding power with great clutch life in moderately enthusiastic conditions. PartNumber : comp15030-2250 Description : 2250 Brass Plus/Cerametalic Clutch Kit 2004-2014 Subaru Impreza WRX STI H4.2458cc Drivetrain::Clutch Kits - Single 2007 Subaru Impreza WRX STI Limited H4.2458cc Drivetrain::Clutch Kits - Single 2011-2014 Subaru Impreza WRX STI Limited H4.2458cc Drivetrain::Clutch Kits - Single 2010 Subaru Impreza WRX STI Special Edition H4.2458cc Drivetrain::Clutch Kits - Single