My wife and I just purchased two 390s and were disappointed to learn that the quick shifter + wasn't even an option on our 390s. They make the parts, they come standard in India (maybe other markets) but we can't even order them as add-ons? Can we order parts from India? Are they planning on releasing a kit for the US market? This option was a solid reason why we considered the bikes in the first place, and although we are still happy with our purchases, this was a bit of a bummer.