Stage 2 Titanium Hardware Door Kit - Subaru WRX/STI (2015-2021)Location Diagram Our stage 2 door kit includes 54 titanium bolts and 8 titanium nuts. The kit replaces the hardware circled in the diagram above for all 4 doors. The WRX STI stage 2 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 Check Striker Plate Door Latch Bottom Front Fender Rear Door Hinges Front Door Hinges Door Light Sensors