IronBox BMW E36 Solid Rear Subframe Bushing Kit — Non-Compact

$
155.00
The IronBox BMW E36 Solid Rear Subframe Bushing Kit replaces the compliant OEM rubber-metal bushings and rigidly connects the rear subframe to the vehicle body

The solid duralumin construction eliminates unwanted movement in the original bushings and significantly increases the rigidity of the complete rear suspension assembly

Reducing rear subframe movement helps maintain more consistent suspension geometry during acceleration, braking, cornering, and rapid load changes

Main features

  • Solid rear subframe mounting — replaces the flexible OEM rubber-metal bushings with rigid duralumin components
  • Reduced subframe movement — minimizes unwanted movement between the rear subframe and vehicle body
  • More consistent suspension geometry — helps maintain camber and toe settings more consistently during hard driving
  • Improved rear-end response — provides a more direct and predictable connection between the chassis and rear suspension
  • Reduced suspension deflection — helps prevent the rear suspension assembly from moving relative to the vehicle body under load
  • Eight-piece construction — the complete IronBox kit contains eight machined bushing components
  • Anodized duralumin construction — provides high rigidity, strength, low weight, and corrosion protection
  • Motorsport-focused design — suitable for drift, track, time attack, and other performance builds

Compatibility

  • BMW E36 Sedan
  • BMW E36 Coupe
  • BMW E36 Touring
  • BMW E36 Convertible
  • BMW E36 M3 using the corresponding standard rear subframe mounting configuration

Not compatible with

  • BMW E36 Compact
  • BMW 318ti
  • BMW E30
  • BMW Z3

Vehicles using a modified or custom rear subframe unless confirmed before ordering

The BMW E36 Compact uses a different semi-trailing-arm rear suspension and requires different rear subframe bushings

Compatibility must be determined by the installed rear subframe and mounting configuration, not only by the vehicle model or engine

Kit includes

  • Machined solid duralumin rear subframe bushing components — 8 pcs
Installation diagram

This listing is for the rear subframe mounting bushings only

Differential bushings, rear subframe reinforcement plates, suspension-arm bushings, mounting bolts, and other rear suspension components are not included

Required chassis inspection and reinforcement

The BMW E36 rear subframe mounting points and surrounding floor structure must be inspected for cracks, separated spot welds, deformation, corrosion, and previous repairs before installation

IronBox recommends reinforcing the rear subframe mounting points before installing the solid bushings

For drift, track, and other high-load applications, combine this kit with the separate IronBox BMW E36 Rear Subframe Mounting Point Reinforcement Kit

Solid subframe bushings must not be installed over damaged or unrepaired chassis mounting points

Installation information

Installation requires lowering or removing the rear subframe and extracting the original rubber-metal bushings using suitable equipment

The installation diagram supplied with the kit must be followed to ensure the components are positioned correctly

The orientation and seating of every component must be checked carefully during assembly

Solid subframe bushings transfer suspension and drivetrain loads more directly into the vehicle body, making the condition of the chassis mounting areas especially important

All mounting hardware must be inspected and tightened to the appropriate specification

Rear suspension alignment must be checked after installation

Installation and any required chassis reinforcement must be carried out by qualified specialists