IronBox BMW E46 Adjustable Caster Lollipop Brackets — Polyurethane

$
120.00
The IronBox adjustable caster lollipop brackets replace the original front control arm rear mounting brackets in compatible BMW E46 motorsport suspension setups

The adjustable construction allows the caster angle to be configured more precisely while the polyurethane bushings reduce suspension movement compared with conventional OEM rubber bushings

Polyurethane retains a degree of vibration isolation and is a more compliant alternative to fully rigid spherical-bearing mounts for vehicles used in both performance driving and street conditions

These brackets are designed for compatible aftermarket front control arms and are not compatible with OEM BMW E46 front control arms

Main features

  • Adjustable caster geometry — allows the front suspension geometry to be configured for the required drift, track, or custom setup
  • Wide adjustment range — provides greater control over the position of the front control arm
  • Polyurethane bushings — reduce unwanted movement while retaining more compliance than spherical bearings
  • Improved steering response — provides a more direct connection between the front control arms and chassis
  • More consistent suspension geometry — reduces deformation compared with conventional OEM rubber bushings
  • Street and motorsport compromise — suitable for builds requiring improved precision without a fully rigid spherical-bearing connection
  • Serviceable construction — provides easier maintenance than conventional pressed rubber bushings
  • Steel construction — provides a strong and rigid mounting solution
  • BLACKNITRIDE surface treatment — provides corrosion protection for the steel components
  • Designed and manufactured in Ukraine by IronBox

Compatibility

  • BMW 3 Series E46

Compatible aftermarket front control arms with the corresponding rear mounting geometry

Drift, track, and custom front suspension configurations using compatible control arms

Not compatible with OEM BMW E46 front control arms

Installation on OEM E46 control arms would require machining the hexagonal control arm ends to a round profile which is not recommended by IronBox

This is not a direct bolt-on replacement for the standard BMW E46 lollipop brackets when factory front control arms are retained

Compatibility must be confirmed according to the control arm end design, mounting dimensions, bracket position, and complete front suspension configuration

Compatibility with BMW E46 M3, Compact, xi models and custom angle kits must be confirmed before ordering

Kit includes

  • Left-side assembled caster bracket — 1 pc
  • Right-side assembled caster bracket — 1 pc
  • Installation hardware

Polyurethane configuration

The polyurethane bushings provide increased rigidity and steering feedback compared with OEM rubber bushings while retaining more vibration isolation than spherical bearings

Some additional noise, vibration, and harshness may be transferred into the chassis compared with the original suspension mounts

The exact polyurethane hardness is not specified and should be confirmed before ordering if it is critical for the intended application

Important installation information

A complete wheel alignment is required after installation

Caster adjustment changes the longitudinal position of the front wheel and may affect tire, wheel-arch, brake-hose, and steering clearance

Check the complete suspension movement at full steering lock, compression, and droop before operating the vehicle

Inspect the front control arms, chassis mounting points, brackets, polyurethane bushings, and installation hardware before installation

All fasteners must be tightened correctly and inspected regularly during motorsport use

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