Hardrace forged front roll center adjusters (RCA) are extended ball joints that are designed to directly replace the factory ball joint inside the front knuckles.

When a vehicle is lowered, the geometry of the front suspension becomes altered. The lower the vehicle is, the greater the angles are increased. This change drastically affects camber and caster, steering response, stability, handling and cornering performance.

Hardrace RCA's with their increased length, are able to reposition and correct the angles of the front knuckles and lower control arms. The resulting correction in the suspension’s geometry will improve response and handling, decrease roll, and increase tire contact patch and tread life, while making alignments more consistent.

For a lowered S2000 chassis, this is only part of the equation. Rear RCAs  are highly suggested to be used in conjunction with the front RCA's as well as a front + rear camber kit, anti-bump steer kit, and rear driveshaft spacers.