which hop-up

[4x4]

could you guys search this site to find a hop up for less than £10.00.
i was thinking about the integy brake hub.what do you guys think?
thanks 4x4 http://www.jespares.com/catalog/index.php

[4x4]

and would these fit the standared savage hex hubs (i think 14mm)
http://www.jespares.com/catalog/product_info.php?cPath=163_218&products_id=1287
thanks 4x4