Front anti-roll club for ball-bearing roll club mounting system and redesigned to work alongside the X4 front suspension system arms. The anti-roll bar system is installed on front bulkheads via bearings from outside for extra-smooth movement and for fast & effortless changes and modification. The roll club turns in ball-bearings for maximum accuracy and free movement. Anti-roll bar height is adjustable via a screwââ¬Â¦ quick & effortless. Anti-roll bar has laser-engraved stripes (corresponding to club depth) for simple recognition.