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