The FX350 System uses the Power Plus I Pressure Plate with Clutch Masters New Formula Button disc. This clutch is designed for the street enthusiast or weekend racer who plans to abuse their vehicle on an occasional basis and have a spirited driving style. The FX350 clutch system has a higher holding capacity than a segmented Kevlar lining without compromising the street friendly characteristic Clutch Masters is known for. For year’s enthusiast have had to compromise durability for drivability and vise versa, however with Clutch Masters New Formula button we have closed the gap between these two tradeoffs. PartNumber : cm20971-HDFF-R Description : FX350 Clutch Kit; Heavy Duty Pressure Plate; Sprung Hub Fiber Tough Lined Disc; Rigid Disc 2009-2010 Porsche Boxster S H6.3387cc Drivetrain::Clutch Kits - Single 2011-2012 Porsche Boxster S H6.3436cc Drivetrain::Clutch Kits - Single 2012 Porsche Boxster S Black Edition H6.3436cc Drivetrain::Clutch Kits - Single 2009 Porsche Boxster S Porsche Design 2 H6.3387cc Drivetrain::Clutch Kits - Single 2009-2010 Porsche Cayman S H6.3387cc Drivetrain::Clutch Kits - Single 2011-2012 Porsche Cayman S H6.3436cc Drivetrain::Clutch Kits - Single