Hi, I've just bought some new forks and I don't know what it's called but they need the part which sits right at the bottom of the steerer tube, like a ring with a smaller ring on top...   

I've got one on my old forks but dont know how to get it off (its very stuck have tried hammer and screwdriver)

Any help would be appriciated

It's the crown. Take it to a bike shop and they can use a crown race puller or something.

surely its the crown race hes talking about?

get a hammer and a screw driver to take it off.  put it on again with a piece of wood and a lump hammer.

wedge a screwdriver under part of it and twist it slightly then carry on all the way around and it should come off eventually.

mate take it to you local bike shop if you don't know what your doing they will chare 5er max to swap it over and fit to new forks and will take 10 mins max!

no point in damaging new forks or crown race!

yer i got mine off. but whats the best way to get it back on?

barbie that means they work on 15% or sus for and i'd say your being to genorouse there

best thing to do is get a new one you lbs should be able to order one in as itll be a spare from the distributors of the head set

if you take them off with a screw driver you may sligtly bend it even if it is unnoticable it may still cause your bearings to run differently and feck them quicker