ItalianRP Silver line piston set for the BMW B58 Gen 1 3.0 turbo (6 cylinders), 82.00mm bore, OEM stroke, compression ratio and compression height. Silver line: 4032 aluminium, double-bridge design, without galvanic coating (ItalianRP machines its Gold line from 2618 aluminium and its Platinum line is billet forged 2618). Made in Italy. Piston clips CIRP22; matching ItalianRP rod IRPR501. For the B58 Gen 1 cars: M140i, M240i, 340i, 440i, 540i, 640i GT, 740i and X3/X4 M40i (2018-2019). The B58 Gen 2 takes a different ItalianRP piston (IRPP033VDA).