Size of std rear caliper bolt?

The Oily Bits S1 Specific Topics
1

I took a rear caliper off to fit a new disk at the weekend.

I had the right size socket for the top nut but couldn’t seem to find the right size allen key for the bottom bolt. Helpfully, the service manual just refers to it as an M8.

I want to buy an appropriate attachment for the torque wrench before I do the other side, so does anybody know the right size?

Thanks in advance.

Cheers, Ian

2

Is it the lower bolt that lets you remove the outer section of the caliper and not the whole caliper off the upright? If so then it’s a M8 x 60 cap head (6mm hex key).

HTH

3

6mm hex is probably what I’m after.

I thought I tried a 6mm though and resorted to a poorly fitting 5.5mm, ho hum.

I didn’t try removing the “outer section” (?), just took the whole thing off (weird though, only pulls off backwards but goes back on over the disk ).

Cheers, Ian