Personalizing and upgrading your motorcycle is popular amongst motorcycle enthusiasts to improve performance, aesthetics, or comfort. The KTM Duke 390 comes with a sporty nature and a very active community, making it a popular platform for modifications. Riders often talk about everything from simple cosmetic changes to large performance improvements. Modification is often performed on the exhaust system, suspension, ergonomics, and electronics. But with so many mods out there, it can be difficult for owners to decide what’s worth the money. These factors include performance impact, reliability impact, and warranty implications, as well as overall cost-benefit ratio. Debate over modifications frequently centers on whether it’s possible to make an improvement that may compromise the bike’s integrity or slot reliability.