Bump Steer Spacers ( Roll Center Adjusters RCA's) Fits 510 and 280ZX cars, INCLUDES mounting hardware bolt kit.
Also know as roll center adjusters, these are made from 6061 solid aluminum and are CNC machined to a perfect fit. Shown installed on my personal car here.
These are to correct your geometry on lowered cars.
We run these on street and race cars with great results.
They mount in-between the strut assembly and the steering knuckle.