Whiteline rear sway bar kit
 

So I installed the kit and had some issues with the u clamps tightening all the way. I ended up having to replace them and installed new ones as they stripped due to movement. It seems to be holding up prior to shipping it but still worried it may strip again over time or cause damage to the axle. Is there another clamp I could use instead of c clamps to connect it better to the axle? Thanks

All these clamps do is hold a the bar in place for a pivot point. No issues with mine other than an endlink that the locking nut backed off.

Loctite is your friend.