XRAY X4 '24/'25 Front UAM Anti-Roll Bar. These Under Arm Mount anti-roll bars are intended for the '24 and '25 X4. The stock roll bar for the graphite chassis is 1.2mm (XRA302832) and the stock roll bar for the aluminum chassis is 1.3mm (XRA302833). Package includes one anti-roll bar.
Roll Bar Thickness:
Softest
Soft
1.1mm - XRA302831
Medium
1.2mm - XRA302832
Hard
1.3mm - XRA302833
Hardest
1.4mm - XRA302834
Hardest
Effects of Front Roll Bar Changes
Roll Bar
Characteristic
Softer
Increases chassis roll
Increases off-power steering into corner
Increases front grip in corners
Decreases steering response
Stiffer
Decreases chassis roll
Decreases off-power steering into corners (Increases Understeer)
