Hi, My duke 390 currently has the stock gearing and chain (15T front, 45T rear). Being my duke is for commuting to work and not really for fun, my aim is to get to work n back cheap as I can, thus fuel economy is key for me. I am interested to know people experiance on the gearing your... PowerTRONIC Performance ECU for KTM Duke /RC 125, 200, 250, 390 , 690 PowerTRONIC installs in less than 40 minutes with no fancy tools required (DIY) Free Map Switch with every PowerTRONIC ECU PowerTRONIC is a transferable ECU that can be used on any Fuel-injected bikes. If you buy a new bike... Hi everyone, I would like to share what all performance upgrades I have done to my Duke 390 . Duke 390 was my dream bike from the day I had seen it on youtube and people moto vlogging on it. The 390 had become every youth's aspiration to buy in India. So let me start with some photos of my modded... If I were outfitting a Duke for offroad use with the OEM cast wheels, I would fit dual sport tires with the tallest aspect ratio possible: IE, instead of the stock 150/60/17, I would seek to fit a 150/90/17, and similarly with the front.
