Some use this I believe... on fixed for just a front brake.
http://bikeisland.com/cgi-bin/BKTK_S...ls&ProdID=1569

I would get an opinion from someone who has the Kilo TT to verify the fit on that fork. I have the Dawes SST and it's stock brakes front and rear.

Most here agree that both a front and rear brake are the best idea for fixed (commuting around cars can get you killed) even if you just use it till you're comfortable using your legs as the rear brake. Both front and rear are pretty necessary for a singlespeed/freewheel setup.

These guys (Bikeisland) are the parts/accessories business of Bikesdirect, and have some parts in common to the bikes they sell, decent prices, free shipping, no tax and such.
http://bikeisland.com/cgi-bin/BKTK_S...:%20Brakes-Rim