My 2010 XTC frameset came with a FSA headset fitted and a little bag with some bits and bobs in it. Do i have to fit anything other than the crown race to the forks?

There are no instructions just a bag with a gold bit in and some spacers?

this is what the giant site says:

HEADSET: Integrated 1-1/8” Sealed Cartridge Bearing w/ Composite Spacers and Top Cap

So i guess i just fit the crown race and the top cap?

Indeed you do, pop the crown race on. (might need to use a lbs) and shove it up through the frame.

Spacers are there for if you need to fill the gap between the stem and the top cap.
You might also need to fit the star nut?? Unless its one of those expending jobs like the Hope Head doctor..

Cheers
Josh…