Titanium Hardware Door Kit - BMW G80 M3 (2021+)Location Diagram Our door kit includes 32 titanium bolts and 4 titanium washers. The kit replaces the hardware circled in the diagram above. The BMW G80 M3 door kit comes with clear instructions that walk you through where to place each hardware piece, ensuring a fast and effortless setup. Locations include: Door Latches Door Striker Plates Rear Door Hinges Door Checks Sideview Mirrors Additional Door Locations Benefits include: Superior Corrosion