The IronBox V2 adjustable caster lollipop brackets replace the original front control arm rear mounting brackets on compatible BMW E30 and E36 front 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 ⠀ The adjustment range can be extended by swapping the left- and right-side bracket bodies, providing additional control over the longitudinal position of the front control arms and front wheels ⠀ Polyurethane bushings reduce unwanted movement compared with conventional OEM rubber bushings while retaining more vibration isolation than fully rigid spherical-bearing mounts ⠀ Main features ⠀
On-car caster adjustment — allows geometry changes without removing the bracket bodies from the vehicle
Extended adjustment range — the left- and right-side bracket bodies can be swapped to provide additional setup possibilities
Polyurethane bushings — reduce unwanted suspension 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 bushing deformation under acceleration, braking, and cornering loads
Street and motorsport compromise — suitable for performance road cars, drift builds, track-day cars, and custom suspension setups
Lower NVH than spherical bearings — retains more isolation from road noise, vibration, and suspension impacts
Serviceable construction — provides easier inspection and maintenance than conventional pressed rubber bushings
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 E30
BMW 3 Series E36
Compatible OEM or aftermarket E30 and E36 front control arms with the required rear mounting geometry
Front axle only
⠀ Not compatible with OEM BMW E46 front control arms ⠀ Installation on OEM BMW E46 front control arms would require machining the hexagonal control arm ends to a round profile, which is not recommended by IronBox ⠀ Compatibility with BMW E30 M3, BMW E36 M3, BMW E36 Compact, BMW Z3, modified control arms, and custom steering angle kits must be confirmed according to the installed front suspension configuration ⠀ Compatibility is determined by the control arm end design, mounting dimensions, bracket position, and complete front suspension configuration ⠀ Kit includes ⠀
Left-side assembled caster bracket — 1 pc
Right-side assembled caster bracket — 1 pc
Installation hardware
Operating instructions
⠀ 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 still be transferred into the chassis compared with the original suspension mounts ⠀ For maximum steering precision and a fully rigid motorsport connection, consider the separate IronBox BMW E30 / E36 Adjustable Caster Lollipop Brackets — Spherical Bearings V2 ⠀ 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, anti-roll-bar, 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 performance or motorsport use ⠀ Installation, suspension adjustment, and final inspection should be carried out by a qualified specialist