IronBox BMW E30 Front Caliper Adapter Kit — E36 / E46 Brakes
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This IronBox kit is designed for installing compatible BMW E36 or BMW E46 front brake components on the BMW E30 front axle ⠀ The kit contains front caliper adapters and installation hardware only ⠀ The adapters required to install BMW E36 or E46 front hubs and convert the original BMW E30 4×100 configuration to 5×120 are available as an additional option⠀
Before installing this kit, the vehicle must be equipped with a separate BMW E30 hub conversion adapter kit and compatible BMW E36 or E46 front hubs ⠀ The conversion uses matching BMW E36 or E46 front brake discs, calipers, and caliper carriers ⠀ The selected brake components must come from one compatible configuration and the caliper carriers require modification for installation with the adapters ⠀ Main features ⠀
Dedicated front caliper adapters — designed for installing compatible BMW E36 or E46 front brake components on a BMW E30
E36 and E46 brake compatibility — works with matching front brake discs, calipers, and carriers from a compatible donor configuration
Separate hub conversion required — must be used together with a separate BMW E30 to E36/E46 front hub adapter kit
Matched brake configuration — the selected brake discs, calipers, and carriers must form one compatible set
Modified carrier installation — the caliper carriers require modification for correct installation with the adapters
Complete adapter pair — supplied as one adapter for each side of the front axle
Installation hardware included — supplied with the required adapter mounting hardware
Steel construction — designed for performance, drift, track, and custom builds
BlackNitride finish — provides corrosion protection for the steel components
Designed and manufactured in Ukraine by IronBox
⠀ Compatibility ⠀ Compatible with: ⠀
BMW 3 Series E30 front axle
BMW E30 fitted with a separate front hub conversion adapter kit
BMW E36 or E46 front hubs installed using the required separate adapters
Matching BMW E36 or E46 front brake discs, calipers, and caliper carriers
⠀ Not compatible with: ⠀
BMW E30 retaining the original 4×100 front hubs without a separate hub conversion
Installation as a replacement for the required hub conversion adapters
Mixed brake discs, calipers, and carriers from incompatible configurations
Other hubs or brake components unless confirmed before ordering
⠀ Compatibility is determined by the installed hub conversion and complete brake configuration rather than only by the vehicle model or engine ⠀ Required parts — not included ⠀
BMW E30 front hub adapter kit for installing BMW E36 or E46 hubs — required unless selected as an additional option
BMW E36 or E46 front hubs
Matching BMW E36 or E46 front brake discs
Matching BMW E36 or E46 front brake calipers
Matching caliper carriers
Brake pads
Any replacement bearings, fasteners, or service components required for the selected configuration
⠀ The brake discs, calipers, and carriers must be selected as one compatible set ⠀ The caliper carriers require modification before installation with the adapters ⠀ Kit includes ⠀
Left-side front caliper adapter — 1 pc
Right-side front caliper adapter — 1 pc
Adapter installation hardware
⠀ Important installation information ⠀ This kit contains caliper adapters only and does not replace the separately required hub conversion adapters ⠀ The selected caliper carriers require modification before installation ⠀ Installation, carrier modification, hub fitment, caliper alignment, fastener tightening, and final braking-system testing must be carried out by a qualified specialist ⠀ Compatibility with ABS-equipped vehicles and any non-standard hub or brake configuration must be confirmed before ordering ⠀ Do not operate the vehicle until the complete front hub and braking system has been properly inspected and tested