From an engineering standpoint, both SPL and SPC use the same locking collar design. The SPL has titanium parts for weight savings, but the chances of either design
slipping are next to nil!
HOWEVER, the lockout kit from SPL will allow you to set the camber bolt and toe bolt into a locked out position any prevent and movement of the camber or toe arms at the frame connection. You can buy a lockout kit for the SPC arms if you like and achieve the same effect....
