Back anti-roll club for ball-bearing roll club mounting system and redesigned to utilize the X4 back suspension system system hands. The anti-roll club system is set up toward back bulkheads via bearings from outside for extra-smooth motion and for fast & easy alterations and modification. The roll club turns in ball-bearings for optimum precision and free motion. Anti-roll club height is adjustable via a screwââ¬Â¦ fast & simple. Anti-roll club has laser-engraved stripes (corresponding to bar thickness) for easy recognition.