91=We recommend a special anti roll bar kit (part no. 680 50 008) for models with a drive shaft diameter of min. 50mm. This is for improving the clearance of the right hand side drive shaft. Because of car specific differences a clearance is not always given - 115=For sport suspensions kits with a lowering from 45 mm please replace the anti-sway bar kit to quarantee enough clearence of the right drive shaft. Anti-sway bar kit for cars without Xenon headlights: part 68550006, with Xenon headlights: part 68550007