An ST Suspension Height Adjustable Spring Kit is the ideal solution if you want to keep your car's stock dampers but still enjoy the benefits of adjustable lowering like you would get with Coilovers.Individual height adjustment of the standard suspension kitAdaptive damper control remains activeVehicle specific spring ratesImproved steering behaviourWhereas a normal spring kit generally offers a fixed amount of lowering, ST Suspension's Coilover spring kit comes with its own adjustable spring seats/perches which replace the fixed factory items allowing the lowering level of each to be fine-tuned individually, even after installation.Taking only a little more time to install than a lowering spring kit (perhaps an extra hour to fine-tune the lowering amount) this kit replaces the stock, non-adjustable spring seats/perches and generally includes springs precisely matched to the factory dampers, adjustable perches/seats, with the addition of application-specific bump-stops and dust-covers