Megan Racing Lexus GS 350 2014+ Front Roll Center Adjuster - MRS-LX-0550Roll Center Adjusters for the 2014+ Lexus GS provide a 30mm correction in geometry to aid in achieving a lower ride height while minimizing the adverse effects. Advantages in raising the knuckle position lay in preventing the lower control arm from passing the parallel point which will start pulling from the suspension's negative camber curve and may get to the point where the geometry starts adding positive camber as the suspension travels upwards.