snapped an exhaust stud

[Dead Eye]

It is possible to remove it with the engine still in the frame but access can be quite hard...

I used a decent stud extractor, an impact driver and a hammer, worked on 5 of my 7 stuck studs but as you can tell, they were all in terrible condition.

You want this type of stud extractor

http://www.amazon.co.uk/Laser-4393-Impac...+extractor

It allows you to really tighten it up on to the stud - this is the exact set that I have. You ideally only need the 1/4" one but it seems near impossible to find it by itself. The 3/8" drive says that it does down to 6mm but ideally you want less than this so that you can really clamp the extractor on.

Then, an impact driver like this http://www.halfords.com/webapp/wcs/store...yId_165469 (this is also the one I have). You will need an adaptor to get from the 1/2" drive down to the 1/4" drive on the extractor (thankfully I had these already) and then its a case of being liberal with the use of a hammer. Heat will help as well

I have no idea what access is like trying to do this with the engine still in the frame as I did it with the engine removed. Worst case is to remove the forks, but that's a lot easier than removing the engine.

This is obviously quite an involved process compared to some of the other suggestions