Straight back anti-roll club for ball-bearing roll club mounting system and redesigned to utilize the X4 straight back suspension system system system arms. The anti-roll club system is established toward back bulkheads via bearings from outside for extra-smooth movement and for fast & simple alterations 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 & easy. Anti-roll club has laser-engraved stripes (corresponding to club thickness) for effortless recognition.