Owners of KTM Duke 125 bike often try to increase the performance of their bike within the legal limit. That could include any changes to improve power delivery, to handling, or to any aspect of the riding experience. Some riders are looking to exhaust systems for better sound and some marginal power gains, suspensin tweaks, or ergonomic modifications. ECU remapping is also f interest but can be controversial as it can void a warranty or be illegal. Owners also like to put aesthetic mods on their bikes. In this post, we will delve into the most popular and powerful modifications that Duke 125 riders are making and how they really make an impact on the bike’s performance and rideability.