Parts/Suspension & steering/Sway bars/XRAY X4/X4F Rear UAM Anti-Roll Bar (2024/2025) (1.1mm)
XRAY X4/X4F Rear UAM Anti-Roll Bar (2024/2025) (1.1mm)
XRAY

XRAY X4/X4F Rear UAM Anti-Roll Bar (2024/2025) (1.1mm)

Part # XRA303831
Thickness | Diameter
Where to buy
$12.40
AMain Hobbies
Seen Oct 12, 2026
$12.40Buy
Prices are as last seen at the store; stock is not tracked.

About this part

Roll Bar Overview:

XRAY X4 '24 Rear UAM Anti-Roll Bar. These Under Arm Mount anti-roll bars are intended for the '24 X4. The stock roll bar for the graphite and aluminum chassis is 1.2mm (XRA303832). Package includes one anti-roll bar.

Roll Bar Thickness:

Softest
Soft 1.1mm - XRA303831
Medium 1.2mm - XRA303832
Medium Stiff 1.3mm - XRA303833
Medium Hard 1.4mm - XRA303834
Hard 1.6mm - XRA303836
Hardest 1.8mm - XRA303838
Hardest

Effects of Rear Roll Bar Changes

Roll Bar Characteristic
Softer
  • Increases chassis roll
  • Increases rear grip in corners
  • Decreases on-power steering
  • Car responds more slowly in changes of direction
Stiffer
  • Decreases chassis roll
  • Decreases rear grip in corners
  • Increases on-power steering
  • Car responds quicker in changes of direction

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