ok guys i have a 05 cbr 1000rr i just put a yoshi exhaust and i dont know if its just bad luck or what but ever since then my bike wont recharge i put a new battery in it and it works for a few starts and then bang its dead out of the blue , what could this be ? help me out

 

Sounds like your Stator went out (common on the 1000RR) , it should be covered by your warranty .
Take it to the dealer and have them replace it .

 

the regulator rectifier will go out first, to protect the stator..do a charging system check.
Charge the battery and put it in the bike, now start it and put a volt meter on the batttery connections and see what voltage it is at at 5500RPM..it should be somewhere in the 13.5-14 volt range...if it is, the chargin system is probally fine and you just have a bad battery

 

Here's a tutorial I did on another board:
http://forums.cbrworld.net/forums/140473/ShowPost.aspx

 

Bike not charging

How Many Stators Blown?? Post up!!!