These Centerlock-only SLX discs have the looks of XT or XTR, but at a signiﬁcantly lower price. What they don’t have is the Ice-Tec rotor with its aluminium core – this is a plain steel version pinned to a strong alloy carrier. Their rock-shucking rigidity is noticeable, even in the largest of the 160/180/203mm sizes.
Fitting is simplicity itself, provided you have a deeply recessed cassette tool (the ofﬁcial one, with clearance for rear hubs, is £20). Calliper adjustment is easy thanks to zero warp, while feel and power are consistent even with budget brakes. A quality rotor.
This article was originally published in What Mountain Bike magazine.