The IronBox V2 adjustable caster lollipop brackets replace the original front control arm rear mounting brackets in compatible BMW E46 motorsport suspension setups ⠀ The revised V2 construction allows the caster angle to be adjusted directly on the vehicle without removing the bracket bodies from the chassis, making suspension setup faster and more precise ⠀ An extended adjustment range is provided by two bracket mounting positions and two bearing mounting positions within each housing ⠀ Heavy-duty spherical bearings eliminate the compliance associated with conventional rubber or polyurethane bushings, providing a more direct steering response and helping maintain more consistent front suspension geometry under high loads ⠀ Main features ⠀
On-car caster adjustment — allows geometry changes without removing the bracket bodies from the vehicle
Extended adjustment range — two bracket positions and two bearing mounting positions provide multiple setup configurations
Heavy-duty spherical bearings — developed for high-load drift, track, and motorsport applications
Rigid suspension connection — reduces movement associated with conventional rubber or polyurethane bushings
Sharper steering response — provides more immediate feedback and more precise front axle control
Protective dust boots — help protect the spherical bearings from contamination and extend their service life
Anodized duralumin housings — combine low weight with high structural rigidity
BlackNitride-treated steel components — provide corrosion resistance and a durable finish
⠀ Compatibility ⠀
BMW 3 Series E46
Compatible aftermarket front control arms with the required rear mounting geometry
Drift and custom front suspension configurations using compatible control arms
Front axle only
⠀ Not compatible with OEM BMW E46 front control arms ⠀ This product is not a direct bolt-on replacement when the original BMW E46 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 or xDrive models and custom steering 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
Operating instructions
⠀ 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 and ensure that the spherical bearings do not bind ⠀ Inspect the front control arms, chassis mounting points, brackets, spherical bearings, dust boots, 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