Surly Fixxer

Bonno Posts: 69
edited July 2010 in Workshop
Going to the dark side next year and having a go at fixed TT racing!!
So... i'm getting a surly fixxer to convert an old Hed disc.
Can anyone tell me, does the fixxer come with a lock ring for the sprocket or do i have to get this seperately? Also, do i have to buy Surly sprockets, or are all sprockets / lockrings universally threaded?
Muchas Gracias!