Q. How is the performance of Jawa 42 - 42 - 42 - 42?

You seem to be a RE fanboy. But as an owner of Both Classic 350 bs6 and jawa 42 2.1 , I can assure you that Jawa build is even tougher than RE, only the indicators are fiber and rest all is pure metal and, in performance you there is no comparison. 350 seems like turtle infront of 42, and one issue with classic 350 is that during long rides, I often need to stop and give bike a rest toa avoid overheating because if it overheats it becomes a mess to start. jawa provide liquid cooling as a solution. And At last, in BS6, RE removed gabriel gas charged shock absorbers and the top speed reacher 110-120 at most that too with vibrations, where as my 42 goes upto 140 and vibrations can be felt at 120+ only. Overall Jawa beats RE in all expects. Just one thing I like about RE that its better for riding at speed from 40-60 within city, its not at all a performance bike.