Part Number: FCPPOC870085 Manufacturer: FCP Engineering Forged high performance pistons for a variety of applications in virtually all engine types for racing and street use. Made of 4032-T6, the bottom of the piston is molybdenum coated. Each piston kit also includes HD series rings and removable links. Size cylinder: 87.00 mm Compression ratio (CR): 8.5:1 Compression height: 30.50 mm Link diameter: 21 mm Stroke: 86.00 mm Opel / Vauxhall - 2.0 16V Turbo (C20LET, C20XE) Connecting rod length must be 143.1 mm or 148 mm (block 2.2)