MMX Billet Subframe Inserts For BMW F2X & F3X Vehicles
Description
The MMX Billet Subframe Insert Kit is a precision-engineered solution designed to improve handling and stability on F-Series BMWs (F2X & F3X). By filling the voids in the OEM rubber rear subframe mounts, these billet aluminium inserts limit unwanted movement, helping to maintain correct suspension geometry and deliver sharper, more predictable dynamics.
Under load, BMW’s stock rubber subframe mounts flex, making the rear feel loose and vague, especially during hard cornering, acceleration, or launches. The MMX inserts solve this issue by eliminating slop in the mounting points without compromising ride quality or adding unwanted NVH (noise, vibration, or harshness).
Crafted from CNC-machined 6061-T6 billet aluminium, these inserts are built to last and will not wear over time. Installation is straightforward, fully reversible, and can be completed in under an hour, making this one of the most effective and affordable upgrades available for your BMW.
Key Features
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CNC-machined from high-strength 6061-T6 billet aluminium
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Fills voids in OEM subframe rubber mounts for reduced movement
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No increase in NVH — refinement remains intact
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Helps maintain correct suspension geometry under load
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Sharper, more stable handling and improved cornering response
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Quick installation with subframe in-situ, fully reversible
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Durable, long-lasting performance upgrade
Compatibility
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BMW 1 Series (F20/F21) – 2011–2019
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BMW 2 Series (F22/F23) – 2011–2019
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BMW 3 Series (F30/F31/F34) – 2011–2019
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BMW 4 Series (F32) – 2011–2019
All engine variants
Part Number: MMR12-6002
Will it fit my car?
We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.
Shipping
All orders made through MOD Central will be passed immediately to the supplier (R44 Performance) that has ships the item. You will get an email from them on the point of sale about processing and dispatch time.
Shipping Costs:
The cost of shipping will be calculated at checkout based on the destination, weight of the product and which vendor/vendors you are buying from.
Shipping Providers:
All our vendors work with trusted shipping partners to ensure your products are delivered safely. However, we are not responsible for any shipping delays, damages, or losses.
International Shipping:
Many of our vendors offer international shipping, but please be aware that additional customs fees or import taxes may apply. These charges are the responsibility of the buyer.
Tracking Information:
Once your order has been dispatched, you will receive a confirmation email with tracking details from the vendor your product was purchased from. If you have not received your tracking information, please contact the vendor with your order number.
Returns/Warranty
Eligibility:
All return eligibility will be specific to the vendor.
Return & Refund Process:
To initiate a return, please contact the vendor you purchased the product from with your order number and reason for return. Their team will provide further instructions.