Using your Perrin Super Shifter Stop is easy. First, gather all the included parts: the shifter stop, screws, washers, and hex keys. Before you start, make sure your Subaru WRX is parked on a flat surface and the engine is off. You can directly bolt the shifter stop onto your existing Perrin shifter using the provided screws and washers. The whole installation process should take about 45 minutes. When it comes to maintenance, keep the shifter stop clean. You can use a soft cloth to wipe it down from time to time. Avoid using harsh chemicals as they might damage the red anodized finish. If you notice any unusual noises or a change in the shifting feel, check the bolts to make sure they are tight. Remember, this product comes with a 5 - year manufacturer warranty, so if you have any issues, contact the manufacturer for assistance.