STREET ADVANCE Z4 has threading type ride height adjustment system.

The ride height can be adjusted by moving the lower spring seat up or down. Its simple structure allows for easier handling.

Standard ride height for STREET ADVANCE Z4 is set at 1 inch (approx. 25mm) higher than the original, to accommodate various driving scenes from streets to off-roading.

STREET ADVANCE Z4 is designed and configured to be most suitable for the lifted height. Simply raising the standard height can lead to insufficient rebound stroke impairing the stability and also make the camber angle positive on strut suspensions.

STREET ADVANCE Z4 is tested on each vehicle models to optimize the dimensions and settings, in order to secure sufficient strokes and to enable the best suited alignment.