Could thin firewire cable harm Audio quality?

Hi Guys, I'm in the middle of a custom 1 box midi controller/interface build , & need to span a gap of about 25cm inside the controller box with a 6pin-6pin firewire cable.
Space is ultratight, so I wonlt be able to fit even the shortest folded 'standard' cable in, so I was considering a retractable 6pin/6pin firewire cable (like this - http://www.retractacable.com/productinfo.php?productsid=37 )

As this seems massively thinner than any firewire cable I've had, I was just a little concerned that this may impact audio quality? - Can anyone advise if this is the case?

Thanks

Adam