Since I know that some of you are coming from FC just thought that I would mention that in your spares package it is important to carry a starter.
The M/C motor starters are not retracted by a bendix the way that they are on the Ford motor. In a spin if you neglect to put both feet in and you spin the motor backwards it will over rev the starter. They still have value but only as a musical instrument - they sound a lot like a maraca. I bought 3 of them before I finally learned my lesson.
Now the catch - Ebay $50 to $150 - Dealer $325
For the GSXR guys a 600/750cc starter will bolt up and will work as a spare - may not have the guts to turn over a full blown DSR motor but that is not an issue with this goup.