I like this bike my favourite I am using the yamaha fz for more than 2yrs.its a very good bike self balances better safety stylish offers comfort ride I went a tour on this bike a total of 1000km I did not have any back pain but you have to adjust the tappet every 15000km or once im a year or else in cold areas the bike gives worse fuel efficiency and power sometimes the engine would not even start I bought a 2nd hand bike last week yesterday when I was traveling to someware try 2 exekerat but can.t this thing happen 2me several times what I do this.