Looking for information regarding the correct thread size and length of bolts for S1 rear brake disc. Would also appreciate advice on the best place to obtain them in titanium. Have searched the forum but had no luck.

M10 x 25 long countersunk (obviously).

Probolt?

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08 Specialized Langster

M10 ? I thought they were an imperial size, UNC or something like that. Not that I'm doubting it, as you obviously have extensive Buell knowledge.

Take one out and measure it

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08 Specialized Langster

Pash is correct.
...but forgot to mention that the thread is Metric Coarse, ie M10x1.5
I listed mine at 30mm long when I measured them in 2000, so his have possibly shrunk a little with age...

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'98 M2 Razorback, it's a keeper.

Metric on the disc side and imperial UNC on the pulley side. Good engineering practice that is Erik

Ok, so M10 it is. Just don't get why there are two different thread types on the wheel, how to cause confusion in one easy step, and I always thought the Italian bike manufacturers had a monopoly on daftness like that.

Actually the Itis aren't as bad as the Krauts... ask anyone who has to work on the crap that goes under the heading of VAG... the threads will be all the same, but every bolt on a particular assembly will have a different head!
You know you've been working on a VW/Audi/Skoda/Seat because it takes so long to put all your tools away!

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'98 M2 Razorback, it's a keeper.

Have contacted Probolt about M10 X 25mm titanium bolts, they tell me they are discontinued, WTF. Have made a quick check around the net before heading off to work but can't seem to see any other sellers. Does anyone have info on where else I can obtain these bolts ?