Have you checked the ARB links?
Is there an easy way to do this?
Googling also brought this up as a possible reason for the knocking.
If they move with your hands they are buggered. Try and move them. Any play, replace with decent ones not cheap crap.
They link the anti roll bar to the struts, has it got a rear anti roll bar?
Is it urgent or can wait till I'm back in the UK?
@lynx started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Is there an easy way to do this?
Googling also brought this up as a possible reason for the knocking.