The 1-piece caster blocks have 7 degrees of built in caster angle.
If your 4XS has it’s suspension inserts in the middle position this will give you a total of caster angle of 19 degrees. The 4xs gives you adjustment of 2 degrees up and down on the Front Suspension Insert (FF) which offers a range between 17 and 21 degrees when using these caster blocks.
If you use the optional Thumbs Designs Suspension Mounts you get a much finer adjustment.
Just like the original Hubs the Roll center position can be quickly & easily adjusted by inserting different thickness of shims atop the caster block (between the block and the vertical ball stud).
These Nylon Caster blocks are SLS 3D Printed to a very high standard, they are very similar in strength and rigidity to the original kit items proving incredibly durable during testing withstanding accidents that have resulted in broken wishbones and bent shock shafts on more than one occasion. They have been polished and dyed black to offer an aesthetically pleasing surface finish.
Optional 10 degree C-Hubs also available.
LESS CASTER: increases off power steering at corner entry, decreases straight-line stability, increases suspension efficiency.
MORE CASTER: decreases off power steering at corner entry, increases straight line stability, makes the car more stable through bumpy track conditions.