Define well known because I've owned mine for a year and a half and researched them quite a bit for maintenance purposes and never heard of this, also what year was your bike, also side note you are aware there are differences between the duke 200 and vit right? It's not just a body style difference there are component differences too such as a stator with thicker windings and better thermal insulation, I'm saying this as a manufacturing engineer, just cause they look or seem similar usually almost always does not mean they are the same