Gintani - Our complete one piece crank hub solution is almost ready. Special tooling and hours of design and engineering has gone into this part. This is not a multi piece part
BMW S55 One Piece Crank Hub Kit - Gintani | ZNM Performance
INSANE PERFORMANCE BMW (F8X) M3/M4 S55 2 PIN CNC ONE PIECE CRANK HUB FIX