A stock Audi S5 from the factory is nothing to sneeze at, but if you are looking to get even more out of your car, check out our selection of aftermarket Audi S5 performance parts. Need an intake? Not a problem. Thinking of upgrading your S5 exhaust? We have those too. Maybe you are a serious enthusiest and building a S5 track car, make sure to check out our S5 gauges to keep an eye on your car's performance as you tune it.