Changing Front Discs On Triumph Speed Four

I'd say not mate, easy enough. You might consider new bolts as well, but it wouldn't keep me awake using the same ones. One thing I would do is support the wheel on blocks, maybe a couple of timbers, to keep the disc off the ground so as not to apply any pressure on the disc opposite where you're working.

 

If you've still to do this, remember stud lock and torque settings.