IronBox BMW E36 / E46 Adjustable Rear Trailing Arm Brackets

$
70.00
The IronBox adjustable rear trailing arm brackets replace the original brackets on compatible BMW E36 and E46 rear suspension setups

The extended adjustment slots provide up to ±2° of additional rear toe adjustment relative to the standard suspension geometry

This additional range is useful for configuring rear toe for drift competition, correcting the geometry of lowered vehicles, or compensating for alignment deviations caused by previous chassis damage

The bracket construction also limits unwanted lateral movement of the rear trailing arm bushings, helping create a more controlled and predictable rear suspension response

Main features

  • Extended rear toe adjustment — provides up to ±2° of adjustment relative to the standard geometry
  • Bolt-on OEM bracket replacement — installs in place of the original rear trailing arm brackets
  • Drift setup capability — allows rear toe to be configured for different tracks, grip levels, and vehicle setups
  • Lowered-vehicle geometry correction — provides additional adjustment when the factory range is insufficient
  • Chassis geometry compensation — may help restore the required toe setting on vehicles with alignment deviations
  • Reduced lateral bushing movement — helps control side-to-side movement of the rear trailing arm bushings
  • More predictable rear suspension — improves rear axle stability and feedback under changing loads
  • Steel construction — provides a strong replacement for the original stamped brackets
  • Powder-coated finish — provides corrosion protection and a clean appearance

Compatibility

  • BMW 3 Series E36
  • BMW 3 Series E46
  • Rear axle only
  • Vehicles using the corresponding rear trailing arm mounting system

Compatibility with BMW E36 M3, BMW E46 M3, BMW E46 Compact, aftermarket rear trailing arm bushings, monoball bushings, and modified suspension configurations must be confirmed before ordering

Not compatible with BMW E36 Compact

Compatibility with BMW Z3, Z4, or other BMW chassis is not confirmed by IronBox and must not be assumed from the compatibility of visually similar aftermarket brackets

Kit includes

  • Left-side adjustable rear trailing arm bracket — 1 pc
  • Right-side adjustable rear trailing arm bracket — 1 pc

Rear trailing arms, rear trailing arm bushings, and replacement mounting hardware are not included

Important bushing information

The brackets are designed to limit unwanted lateral movement of the rear trailing arm bushings

Separate RTAB limiters or restrictor spacers may be unnecessary and their compatibility with these brackets must be confirmed before installation

Compatibility with oversized polyurethane bushings, spherical-bearing conversions, and other aftermarket RTAB solutions must also be confirmed before ordering

Important installation information

A complete four-wheel alignment is required after installation

The rear toe setting must be adjusted equally and correctly on both sides of the vehicle

Inspect the rear trailing arm bushings, trailing arms, chassis mounting pockets, threaded mounting points, and installation hardware before fitting the brackets

Damaged or cracked chassis mounting points must be repaired before installation

Ensure that the bushings move through the required suspension range without binding against the brackets

All fasteners must be tightened to the correct specification and inspected regularly during motorsport use

Installation, suspension adjustment, and final inspection should be carried out by a qualified specialist