I just changed my chain and both sprockets, since then my spedo has been around approx. 20km/hr at realistically doing 100km/hr. Thats where it only reads 80. I had my gf follow me in her car and let me know. I was wondering if there was something I might have done to do this and how i can re-callibrate it. My bike is a 98 gsxr 600. thanks
speedo'e are never out by a given kmph reading. They are only out by a percentage, remember that people, so get your buddy to do 100 kmph beside you then how ever far your speedo is out, that is the "percentage " that your speedo is out.