track control arm bushes mate. if they are still original ones they will be like stale play doh - if the ball joints are ok, remove them and replace with PU ones, like deflex/powertflex etc, do the inner and outer ones and not forgetting the anti roll bar bushes at the front as this takes as much stick as the outer TCA bushes do. its a bit a b'tard to do though and needs the front of the car in the air and get some big spanners and crow bars to lever the anti roll bars into position, oh and plenty of copperslip when reassabling and plenty of wd40 when unassembling and let it soak in .