Right back anti-roll club for ball-bearing roll club mounting system works together right back suspension system system system fingers. The anti-roll club system is initiated towards right back bulkheads via bearings from outside for extra-smooth motion and for quick & effortless alterations and modification. The roll club turns in ball-bearings for maximum accuracy and free motion. Anti-roll club height is adjustable via a screw... fast & effortless. Anti-roll club has laser-engraved stripes (corresponding to club level) for effortless recognition. Works extremely well with #303434 Aluminum Anti-Roll Bar Bushing o2.0mm - 6mm (2) Fits X4 & X4F