Backside anti-roll club for ball-bearing roll club mounting system and redesigned working alongside the X4 straight back suspension system system hands. The anti-roll bar system is attached to back bulkheads via bearings from outside for extra-smooth movement and for quick & simple adjustments and modification. The roll club turns in ball-bearings for optimum precision and free movement. Anti-roll club height is adjustable via a screwââ¬Â¦ fast & effortless. Anti-roll club has laser-engraved stripes (corresponding to club thickness) for easy recognition.