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 : cm02050-HDFF Description : FX350 Clutch Kit; Heavy Duty Pressure Plate; Sprung Hub Fiber Tough Lined Disc 2005-2008 Audi S4 Avant V8.4163cc Drivetrain::Clutch Kits - Single 2005-2008 Audi S4 Base V8.4163cc Drivetrain::Clutch Kits - Single 2005-2009 Audi S4 Cabriolet V8.4163cc Drivetrain::Clutch Kits - Single