Backside anti-roll club for ball-bearing roll club mounting system works together right back suspension system system system hands. The anti-roll club system is initiated toward back bulkheads via bearings from outside for extra-smooth movement as well as for fast & effortless alterations and modification. The roll club turns in ball-bearings for optimum precision and free motion. Anti-roll club height is adjustable via a screw... fast & easy. Anti-roll club has laser-engraved stripes (corresponding to club level) for simple recognition. Functions well with #303434 Aluminum Anti-Roll Bar Bushing o2.0mm - 6mm (2) Fits X4 & X4F