Hi All

Getting to grips with my first GSXR400 here, in fact my first 4-stroke road bike for many years.

Am i right in thinking that the 400 has a a common lubrication system for the bottom end? So there is no seprate for gearbox oil?

I'm used to strokers with only gearbox oil and my old crf450 that had engine and gearbox oil.

Yep, you be wanting 4t engine oil.