RDS928S

Does anyone know why the S4 spindles are not offered for the big brake upgrade for early 928's?.
Since you loose ABS function when using 78-81 spindles it would seem more cost effective if the S4 spindle were used. Then the S4 caliper and rotor would fit too?

RDS

Shane

There is more to it than that, I believe you also have to update the suspension along with the spindles.

Vilhuer

Both upper and lower front arm is different. Mixing parts results odd angles.