So after putting new Tyga pipes on my bike and a set of nice new tyres, I set off for the ace cafe only to have the bike seize on me. It is absolutely stuck solid and will not turn at all. I rather foolishly tried to kick it over and it moved a tiny bit before getting stuck fast.

The problem I have is getting to the route cause. It doesn't run hot and there is a nice layer of oil in the pipes. I had it on a dyno recently and it was running slightly rich at the top end (before the new pipes), so I don't think it is running lean. One thing I have noticed is that the battery was nearly dead after it had stopped. Could a failing battery have caused the issue? Fueling/Ignition may be aaffected by this??

Next step is a full top end rebuild. Do these engines typically destroy the bores, or is it likely to be just pistons?

Any advice on a top end rebuild would be most welcome. Tips, people to repair bores, replates, etc etc. I am a bit gutte at the moment and could do with some support from my NSR bretheren

Thanks.