Xray NT1 Downstop Independent aluminium ARB
From Xray, the new aluminium front anti-roll bar for the NT1 allows you to independently adjust the anti-roll bar from the downstop, so that the downstop setting does not influence the performance of the anti-roll bar and vice versa. An added feature of this set is that you can also adjust the wheelbase. The anti-roll bar moves together with the front arm, and wheelbase adjustment shims can be added either in front of the anti-roll bar, to shorten the wheelbase, or behind the arm, to lengthen the wheelbase.
Source: Xray [teamxray.com]