Bike's an NC23-k.

My rear caliper had become a bit loose, and the only way I could see to tighten it was at the mounting bolt, you know the one you undo first before pivoting the caliper over the remove it?

So I was tightening it.. It was turning but not getting noticebly tighter, then snap! So it snapped inside. The bolt came out and I can pivot the caliper upwards, but the end of the bolt, the thread part, is snapped and stuck in the caliper mount.

So what are my options? The way i see it, I can either drill the bolt out but that would mean re-tapping a thread and getting a suitable new bolt, which might not fit through the caliper..

Or, replace the mounting bracket and bolt.

Any other ideas / suggestions?

Cheers, Chris.

Firstly if you're after replacement parts you can easily find their numbers here: http://www.cmsnl.com/honda-cbr400rrk-nc ... partslist/

I'm assuming you mean this bolt: http://www.cmsnl.com/products/bolt-flan ... 180mn8006/

Notice that the bolt has some thread locking stuff on it (the green blob). I'd recommend getting some sort of thread locking compound for bolts like this (unless it comes pre-applied, like the genuine Honda part), because these bolts don't need to be as tight as you think. You can buy the genuine Honda stuff from places such as CMSNL, David Silver Spares (http://www.davidsilverspares.co.uk/part ... mber_5715/) or Graeme France (http://www.gfracinguk.com/contact_us.html).

Some other advice I can offer (because it's done me a world of good) is get yourself a Torque Wrench or a couple with varying torque ranges and a Haynes manual, it will help in situations such as this, so that you can apply a safe amount of torque on the bolt. Also remember that the CBR has sliding calipers, so they will have a little bit of play in them as they move on the pins, but obviously there shouldn't be any loose bolts.

To get the current one out, you should be able to drill it out carefully without damaging the thread, just use a thin drill and take your time.

Old bolt may come out with a pair of mole grips gripping what ever stub is still left and turning. As said drilling out is easy enough if you use brand new/sharp HSS drill bits and clamp the carrier securely in a vice.
I'd personally probably just buy a new (2nd hand) carrier bracket or whatever they are called. They can't be much more than a tener surely.