Detailed product specifications Manufacturer: FCP Engineering Model: Profile: X-beam (oil channel from tip to piston rod) Center to center distance: 159 mm Tip diameter: 50.6 mm Piston rod diameter: 21 mm Quantity: 4 pcs, 8 pcs of ARP2000 3/8" screws Material: steel forged 4340 EN24erDeclared power: 1000 HP (4 cylinders) Declared revolutions: 9000 RPM Audi / VW 1.8 8V, 2.0 8V, 2.0 16V engines with a 236 mm block (ABF, ABA, AAD, 2E)