Snapped front knuckle poll
 

How many of you that competitively track your s have snapped a front knuckle or not at all?

I haven't, but the design of the front knuckle looks like it was borrowed from a FWD econobox, so I can see how a set of Hoosiers and reinforced/welded upper A-arm brackets would make the knuckle the next fuse in the front assembly.

Has anyone had any issues with the js S1?

IMO I won't run them after seeing multiple people that have had issues on track. Failed knuckle is F'in scary when pushing at the limit..
That being said, I do have a set on my street car with no issues.
My track car has upper offset bushings and reinforced UCA mounts.

Hmmmm. this has me a bit concerned.... I'm using the knock-off hardrace version. Not running the extra RCA plate though (so, less leverage on the knuckle). I also replaced the supplied bolts with grade 10 hardware, which had a very significantly noticeable difference in weight that I could feel in my hands.

Might consider going back to OEM and installing the offset bushings i got from Baero. I currently have about 80 track days on my front knuckles and camber joints.

Its why I returned to OEM ball joints from Js S2 and went with Ikeya Formula upper arms instead