Shop OEM BMW Part # 33306894209 (33-30-6-894-209). Suspension Trailing Arm (Left). AWD, from 05/2019. Trailing Arm - Repair or Replace Trailing arms often don’t fail on their own

Suspension Trailing Arm.
Arm connected between the axle and a forward pivot point. Part has related component that cannot be reused/reinstalled; bolt.

Suspension Trailing Arm

Fits X1, X2

AWD, from 05/2019.
Trailing Arm - Repair or Replace
Trailing arms often don’t fail on their own, although their associated bushings can break or wear causing a clunk noise from the rear when your goes over bumps or changes speed rapidly—whether braking or under hard acceleration.