Join Date: Sep 2016
Location: Ottawa, ON, Canada
I have run the T-Rex lowering link for the rear, 45mm drop and I have RC390 internals in the forks. So forks are 125mm instead of 150mm travel, plus slid the tubes up by about 13mm (maximum possible on smooth section of fork), effectively 38mm lowered.
I touched the engine case down at a local track day which caused me to fall. I could have been further off the bike and avoided touching the engine down but I'm still learning optimum body position etc. I didn't think bike would touch down but it did and so I have since raised the bike back to stock height in rear, with front still at 25mm drop but fork tubes level with clamps again.
So, it will come down to your needs. For me, the lowering was for my wife, who hasn't actually ridden the bike still. I will reinstall the rear link if/when she wants to ride it as it does make a difference when stopped at a light -> more confidence with feet flatter on ground. But otherwise, if you don't need that, I would suggest it's worth it.
2016 Duke 390 - Lowered 45mm F&R with T-Rex Racing link and kickstand, YSS MZ506 shock, RC390 fork springs & custom spacers, DynoJet quickshifter and PCV, Gray Area KTM airbox, open lid, inverted K&N filter, Werkes pipe, TYGA header, 16T sprocket, 320mm Galfer rotor and HH pads, XHP50 LED headlight, Vizi-tec SupaBrake II, Renthal grips with HeatDemon heaters, lever guards, Ride It Moto levers, eBay sliders, rear spools and rearsets, DIY tail tidy, HD radiator, F&R shock guards, OBD2 dongle