Aluminum Rear Trailing Arm Set For E90 E92 E93 E91 M3 335i E82 E87 E88 E81 135i X1 E84 Replaces 33322406291 33326763477 Constructed from billet aluminum, this rear trailing arm set offers increased strength compared to standard components, contributing to improved driving response.The rigid design enhances suspension geometry, supporting better cornering stability and sharper handling.engineered using CNC manufacturing techniques, each arm is built for accurate fitment.This set serves as a direct replacement for the trailing arms without the need for calibration.The kit does not include bushings, so existing bushings are in proper condition prior to installation.Fitment: Compatible with 1 Series models E81, E82, E87, E88 (2005–2013) Compatible with 3 Series models E90, E91, E92, E93, including M3 and 335i variants (2005–2013) Compatible with X1 Series E84 (2010–2015) Replaces part numbers: 33322406291, 33326763477