Hey
I just got my gsxr 400 gk76. It have new chain and sprockets on. But the prob is when im driving she give a little stutter when the rpms are running between 12000 and up... Had the carbs cleaned and sync but still have that problem. Can any body help me out with what may be the prob.

Hello Mate

Saw this and had a thought

Have you had your coils checked, one maybe developing a fault

Go round your electrics and check earths and make sure all plugs are in properly

Best regards

Connor