The FX250 System uses the Power Plus I Pressure Plate and a hybrid combination of Clutch Masters New Formula Button on one side and a heavy-duty Steel Back Organic friction lining on the other. 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 FX250 clutch system has a higher holding capacity than a traditional full faced Kevlar without compromising the street friendly characteristics Clutch Masters is known for PartNumber : cm02031-HD0F Description : FX250 Clutch Kit; Heavy Duty Pressure Plate; Sprung Hub Dual Friction Organic/Fiber Tough Disc 2004-2005 Audi S4 Avant V8.4163cc Drivetrain::Clutch Kits - Single 2004-2005 Audi S4 Base V8.4163cc Drivetrain::Clutch Kits - Single 2004-2005 Audi S4 Cabriolet V8.4163cc Drivetrain::Clutch Kits - Single