The aluminum front anti-roll bar the XRAY NT1 enables you to separately adjust the anti-roll bar from downstop, so the downstop setting will not influence the performance associated with the anti-roll bar and vice versa.
An added function of the set is you can also adjust the wheelbase. The anti-roll club techniques together with the front arm, and wheelbase modification shims can be added either as you're watching anti-roll bar (to shorten the wheelbase) or behind the arm (to lengthen the wheelbase).