Looking under the rig the other day, looked like they were leaking slowly what little grease they have in the drop arms, and it's leaking a bit... seeing that greasy look that tends to pick up dusts and grime...

I am not thinking there is too much of a noticeable performance difference, but when to replace them?

 

I wouldn't think they are a high wear item like a ball joint or tie rod end so they may not need replacing unless something is broken like a rubber sleeve or they get bent. On the other hand if you are going to go ahead and replace them and are interested in greater wheel articulation on trials you might want to get these, I just ordered them last week when they were on a 40% off sale:

http://store.hicountryoffroad.com/Di...nect_p_18.html

 

Nice set up.... what kind of shocks (besides silver) are you running on there...

 

MM, never seen those disconnects, will prolly add those to the front of mine when they need doing........

I like the look of the JKS ones as well