IronBox BMW E46 Adjustable Caster Lollipop Brackets — Polyurethane V2
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The IronBox Version 2 adjustable caster lollipop brackets replace the original front control arm rear mounting brackets in compatible BMW E46 drift, track and custom suspension configurations ⠀ Unlike the previous configuration, Version 2 allows the caster angle to be adjusted while the brackets remain installed on the vehicle, providing easier and more precise suspension setup ⠀ The extended adjustment range is achieved through two available housing positions, with two mounting locations provided in each housing ⠀ Polyurethane bushings reduce unwanted control-arm movement and improve steering response while retaining more vibration isolation than fully rigid spherical-bearing mounts ⠀ These brackets are designed for compatible aftermarket front control arms with round mounting ends and are not compatible with standard BMW E46 front control arms ⠀ Main features ⠀
On-car caster adjustment — allows suspension geometry to be adjusted without removing the brackets from the chassis
Extended adjustment range — two housing positions and two mounting locations provide additional control over the longitudinal position of the front control arm
Polyurethane bushings — reduce deformation and suspension movement compared with conventional OEM rubber bushings
More direct steering response — provides a firmer connection between the front control arms and chassis
Improved suspension consistency — helps maintain more stable front suspension geometry under load
Street and motorsport compromise — retains more vibration isolation than a spherical-bearing configuration
Serviceable construction — assembled components provide easier inspection and maintenance
Duralumin and steel construction — combines rigid machined components with strong steel mounting elements
Protected components — anodized duralumin parts and BLACKNITRIDE-treated steel components provide corrosion resistance
⠀ Compatibility ⠀
BMW 3 Series E46
⠀ Compatible aftermarket front control arms with round rear mounting ends ⠀ Drift and angle-kit suspension configurations using compatible front control arms ⠀ Track and custom suspension configurations with corresponding mounting geometry ⠀ Not compatible with ⠀
OEM BMW E46 front control arms with hexagonal rear mounting ends
BMW E46 xi and xDrive front suspension configurations
⠀ Other control arms unless the mounting-end diameter, shape and complete suspension geometry have been confirmed ⠀ Installation with OEM BMW E46 front control arms would require machining the hexagonal arm ends to a round profile, which is not recommended by IronBox ⠀ Compatibility with BMW E46 M3, Compact and custom angle-kit configurations must be confirmed according to the installed front control arms and mounting geometry ⠀ This is not a direct bolt-on replacement for the standard BMW E46 lollipop brackets when the original front control arms are retained ⠀ Kit includes ⠀
Left-side assembled adjustable caster bracket — 1 pc
Right-side assembled adjustable caster bracket — 1 pc
Installation hardware
Installation and adjustment instructions
⠀ Important installation information ⠀ A complete wheel alignment is required after installation and after every caster adjustment ⠀ Changing the caster setting moves the front wheel longitudinally inside the wheel arch 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 ⠀ The control-arm mounting ends, chassis mounting points, polyurethane bushings and supplied hardware must be inspected before installation ⠀ All fasteners must be tightened correctly and inspected regularly during motorsport use ⠀ Installation, caster adjustment and final suspension inspection should be carried out by a qualified specialist