What single mod or accessory makes the KTM 1190 Adventure experience a completely different one?

As a motorcycle enthusiast, one of the things you love most is personalizing your ride, and that goes for the KTM 1190 Adventure. This question attempts to determine what one particular modification or accessory they feel really makes a difference to your riding experience. It might be to aid comfort on long rides, help off-road performance, provide convenience for touring, or just make the bike more fun to ride. The mod could be anything from very practical to the 'transformative,' but subjective. As always, these responses will vary from rider to rider, depending on style, preference, and how you ride the bike. As a new owner trying to get the most out of your 1190 Adventure, or a more experienced rider looking at what to upgrade to next, this discussion could be very useful to you. At the same time, it's a chance to check out the aftermarket support behind the 1190 and how it can be customized to different riding requirements.