[Closed] Top shock bolt replacement

I'm guessing it's either M6 or M8, shouldered cap head?
If so, most decent hardware shops should be able to sort one out for you.

Thanks goldenwonder, just need to get the other one out now.
Any suggestions pls?

Torx bits-find one that's slightly too big, hammer it in & unscrew-works 99% of the time.
*edit*
Ideally one of the small bits that does into the end of a ratchet driver rather than the P handled or multi tool type, so you can hit hit better & more square on to make sure it goes in properly.

Thanks again, will try this when I've found a replacement.