Probably about a half to three quarters of an inch possibly a little more.

The design as you can see has a squareish shape to the end of the arm while the factory control arm is more compact and rounded around the ball joint.

These are the tuner series and Skunk2 did a redesign of the pro-series where the nuts that anchor the camber play are posistioned on the bottom of the arm rather than the top as seen here.