Part Number: FCPPASTR820080 Manufacturer: FCP Engineering Reinforced high performance pistons for a variety of applications in almost all types of engines for racing and street use. Made of 4032-T6, the bottom of the piston is molybdenum coated. Each piston kit includes rings and HD series of pins. Cylinder diameter: 82 .00mm Compression Ratio (CR): 8.0:1 Compression height: 29.00 mm Pin diameter: 22 mm Stroke: 95.50 mm with 236 mm diesel engine blockAudi 200, S2, RS2, S4, S6 - 2.2 2.5 20V Turbo Connecting rod length must be 159mm