IronBox BMW E30 Front Hub Adapter Kit — E36 / E46 5×120 Conversion

This IronBox adapter kit is designed to install BMW E36 or BMW E46 front hubs on the BMW E30 front axle and convert the front wheel bolt pattern from 4×100 to 5×120
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The base product includes the front hub adapter kit only and does not include the separate IronBox front caliper adapter kit
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The hub adapter kit contains two steel bearing sleeves and two fixing nuts required for installing compatible BMW E36 or E46 front hubs on the original BMW E30 front axle
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BMW E36 or E46 front hubs are not included
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After completing the hub conversion, the front braking system must be configured separately using compatible brake discs, calipers, and the required caliper mounting solution
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The matching IronBox BMW E30 front caliper adapter kit for installing BMW E36 or E46 brake components can be added through the product options
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The caliper adapter kit is included only when the corresponding additional option is selected
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Main features
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• 4×100 to 5×120 conversion — changes the BMW E30 front wheel bolt pattern to 5×120
• E36 and E46 hub compatibility — allows compatible BMW E36 or E46 front hubs to be installed
• Hub conversion kit only — the base product does not include front caliper adapters or brake components
• Optional matching caliper adapters — the separate IronBox front caliper adapter kit can be added through the product options
• Dedicated BMW E30 application — designed for the original BMW E30 front axle
• Front axle conversion — intended exclusively for the front of the vehicle
• Complete hub adapter pair — includes one bearing sleeve and one fixing nut for each side
• 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

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Compatibility
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Compatible with:
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• BMW 3 Series E30 front axle
• Compatible BMW E36 front hubs
• Compatible BMW E46 front hubs
• BMW E30 vehicles being converted from a 4×100 to a 5×120 front wheel bolt pattern

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Not compatible with:
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• BMW E30 325iX
• BMW E30 rear axle
• Other hubs or front axle configurations unless confirmed before ordering

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Compatibility is determined by the installed front axle, selected hubs, and complete brake configuration rather than only by the vehicle’s body style or engine
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Required parts — not included
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• BMW E36 or E46 front hubs
• Compatible front brake discs
• Compatible front brake calipers
• Required caliper adapters or another suitable caliper mounting solution
• Brake pads
• Any replacement bearings, fasteners, or service components required for the selected configuration

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The matching IronBox BMW E30 front caliper adapter kit is required for the corresponding BMW E36 or E46 brake conversion unless another compatible caliper mounting solution is used
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The IronBox caliper adapter kit is included only when selected as an additional product option
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Base kit includes
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• Bearing sleeves — 2 pcs
• Fixing nuts — 2 pcs

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The base kit does not include
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• Front caliper adapters
• BMW E36 or E46 front hubs
• Brake discs
• Brake calipers
• Caliper carriers
• Brake pads

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Important installation information
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This product contains the components required for adapting the front hubs only
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Selecting the base version without additional options does not include the IronBox front caliper adapter kit
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When the additional caliper adapter option is selected, the order also includes a left- and right-side caliper adapter with mounting hardware
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BMW E36 or E46 hubs, brake discs, calipers, carriers, and brake pads are not included with either configuration
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The selected caliper carriers require modification when using the optional IronBox front caliper adapter kit
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Installation, hub fitment, carrier modification, caliper alignment, fastener tightening, and final braking-system testing must be carried out by a qualified specialist
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Compatibility with ABS-equipped vehicles and any non-standard hub or brake configuration must be confirmed before ordering
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Do not operate the vehicle until the complete front hub and braking system has been properly inspected and tested