Detailed product specifications Manufacturer: FCP Engineering Model: FCPRHA14450622-5 Profile: HC beam to C: 144mm Big end diameter: 50.6mm Bolt diameter: 22mm Quantity: 5 pcs, 10 pcs ARP2000 3/8" screws Material: forged steel 4340 EN24er Announced power: 700KM (5 cylinders)Announced power at revolutions: 9000RPMAudi TT RS, RS3 - 2.5 20V TFSIThese connectors fit pistons available on the market, not the original ones