MMR Rear Underbody Chassis Brace (Tunnel Brace) for MINI F56/F55/F54 (2013+) – Billet T-6061 Aluminium, Gloss Black Anodised – Bolt-On Handling Upgrade, Improves Exhaust Clearance – Cooper, Cooper S, Cooper SD, JCW
MMR Rear Underbody Chassis Brace (Tunnel Brace) for MINI F56/F55/F54 (2013+) – Billet T-6061 Aluminium, Gloss Black Anodised – Bolt-On Handling Upgrade, Improves Exhaust Clearance – Cooper, Cooper S, Cooper SD, JCW
MMR Rear Underbody Chassis Brace (Tunnel Brace) for MINI F56/F55/F54 (2013+) – Billet T-6061 Aluminium, Gloss Black Anodised – Bolt-On Handling Upgrade, Improves Exhaust Clearance – Cooper, Cooper S, Cooper SD, JCW
MMR Rear Underbody Chassis Brace (Tunnel Brace) for MINI F56/F55/F54 (2013+) – Billet T-6061 Aluminium, Gloss Black Anodised – Bolt-On Handling Upgrade, Improves Exhaust Clearance – Cooper, Cooper S, Cooper SD, JCW
  • Load image into Gallery viewer, MMR Rear Underbody Chassis Brace (Tunnel Brace) for MINI F56/F55/F54 (2013+) – Billet T-6061 Aluminium, Gloss Black Anodised – Bolt-On Handling Upgrade, Improves Exhaust Clearance – Cooper, Cooper S, Cooper SD, JCW
  • Load image into Gallery viewer, MMR Rear Underbody Chassis Brace (Tunnel Brace) for MINI F56/F55/F54 (2013+) – Billet T-6061 Aluminium, Gloss Black Anodised – Bolt-On Handling Upgrade, Improves Exhaust Clearance – Cooper, Cooper S, Cooper SD, JCW
  • Load image into Gallery viewer, MMR Rear Underbody Chassis Brace (Tunnel Brace) for MINI F56/F55/F54 (2013+) – Billet T-6061 Aluminium, Gloss Black Anodised – Bolt-On Handling Upgrade, Improves Exhaust Clearance – Cooper, Cooper S, Cooper SD, JCW
  • Load image into Gallery viewer, MMR Rear Underbody Chassis Brace (Tunnel Brace) for MINI F56/F55/F54 (2013+) – Billet T-6061 Aluminium, Gloss Black Anodised – Bolt-On Handling Upgrade, Improves Exhaust Clearance – Cooper, Cooper S, Cooper SD, JCW

MMR Rear Underbody Chassis Brace (Tunnel Brace) for MINI F56/F55/F54 (2013+) – Billet T-6061 Aluminium, Gloss Black Anodised – Bolt-On Handling Upgrade, Improves Exhaust Clearance – Cooper, Cooper S, Cooper SD, JCW

£163.79
£163.79
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Rear Underbody Chassis Brace for MINI F56 F55 F54

Upgrade your MINI with the MMR Rear Underbody Chassis Brace for the F56 platform. This rear underbody brace replaces the heavy steel OE tunnel brace with a lightweight, high-strength billet T-6061 aluminium brace to increase chassis rigidity, improve handling and turn-in, and maximise exhaust clearance. Perfect for road or track, this MINI F56 rear underbody brace is a must-have performance upgrade for Cooper, Cooper S, Cooper SD, and JCW models.

Precision machined from T-6061 aluminium and finished in gloss black anodising, the MMR rear chassis brace is designed to reduce weight while maintaining ultimate strength and stiffness. It uses the factory mounting points for a true bolt-on, reversible install with no drilling and no trimming. Despite the added stiffness, it does not add noise, vibration or harshness in the cabin.

Why choose this MINI F56 rear underbody brace

  • Increases chassis rigidity and body stiffness for sharper handling and improved steering response
  • Improves exhaust clearance for performance exhausts and larger diameter systems without removing the tunnel brace
  • Lightweight billet T-6061 aluminium construction compared to the heavy OE steel brace
  • Gloss black anodised finish that looks great and resists corrosion
  • Direct fit using OEM mounting points - no drilling, no cutting, fully reversible
  • Supplied with new installation hardware for a clean, straightforward fit
  • Designed for fast road and track use without adding NVH

This listing is for the Rear Underbody Chassis Brace. To complete the setup, pair it with the matching Front Underbody Brace and Centre Underbody Brace, available separately.

Fitment - MINI F56 platform

  • Series: MINI F56 hatch, F55 5-door, F54 Clubman
  • Years: 2013 onwards
  • Models: Cooper, Cooper S, Cooper SD, JCW
  • Engines: all

What we think

We have installed and run this MMR rear underbody brace on F56 builds and it delivers the extra rigidity and exhaust clearance enthusiasts look for. Customers love the improved stability and the quality of the gloss black anodised finish.

Fitting and support

Professional fitting available at Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.

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