Cobra Sport Rear Box / Backbox (PPF/OPF/GPF Delete Fitment) for BMW M140i F20/F21 LCI 3 & 5 Door 2015–2019 – Non-Resonated Cat-Back Exhaust Rear Silencer – Requires Cobra BM109 PPF & Resonator Delete
Cobra Sport Rear Box / Backbox (PPF/OPF/GPF Delete Fitment) for BMW M140i F20/F21 LCI 3 & 5 Door 2015–2019 – Non-Resonated Cat-Back Exhaust Rear Silencer – Requires Cobra BM109 PPF & Resonator Delete
  • Load image into Gallery viewer, Cobra Sport Rear Box / Backbox (PPF/OPF/GPF Delete Fitment) for BMW M140i F20/F21 LCI 3 & 5 Door 2015–2019 – Non-Resonated Cat-Back Exhaust Rear Silencer – Requires Cobra BM109 PPF & Resonator Delete
  • Load image into Gallery viewer, Cobra Sport Rear Box / Backbox (PPF/OPF/GPF Delete Fitment) for BMW M140i F20/F21 LCI 3 & 5 Door 2015–2019 – Non-Resonated Cat-Back Exhaust Rear Silencer – Requires Cobra BM109 PPF & Resonator Delete

Cobra Sport Rear Box / Backbox (PPF/OPF/GPF Delete Fitment) for BMW M140i F20/F21 LCI 3 & 5 Door 2015–2019 – Non-Resonated Cat-Back Exhaust Rear Silencer – Requires Cobra BM109 PPF & Resonator Delete

£750.00
£750.00
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Cobra Sport Rear Box for BMW M140i F20 F21 LCI 2015 to 2019, 3 door and 5 door. PPF fitment to Cobra Sport PPF delete pipework only. Not compatible with the standard OEM M140i exhaust.

Transform the sound and presence of your BMW M140i with the Cobra Sport Rear Box specifically designed for cars running Cobra Sport PPF delete pipework. This rear silencer delete and backbox upgrade is the perfect finishing piece to build a non resonated cat back exhaust on your F20 or F21 LCI M140i. Expect a deeper, more aggressive exhaust note and a sharper, sportier driving experience while retaining quality and fitment you can trust from Cobra Sport.

Key benefits

  • Made in 3 inch 76.2 mm pipework for maximum flow and a rich, performance exhaust tone
  • Creates a non resonated cat back setup when paired with the Cobra Sport PPF delete mid section
  • Direct fit to Cobra Sport PPF and resonator delete system, precise fitment for F20 F21 LCI M140i
  • All required fittings and gaskets supplied for an easy bolt-on installation
  • Proven upgrade on customer cars, excellent feedback for sound quality and build

Fitment and compatibility

  • Vehicle: BMW M140i F20 F21 LCI 2015 to 2019, 3 door and 5 door, B58
  • Fitment type: Cobra PPF fitment only, connects from the Cobra Sport PPF and resonator delete part backwards replacing the rear silencer
  • Requires Cobra Sport BM109 PPF and Resonator Delete Pipework to fit correctly
  • Does not fit the standard factory M140i exhaust system
  • Also searched as: BMW M140i rear box, M140i backbox, M140i rear silencer, M140i muffler, M140i cat back, M140i non resonated, F20 exhaust, F21 exhaust, PPF OPF GPF delete fitment

Why choose this Cobra Sport rear box

For enthusiasts chasing the best BMW M140i exhaust upgrade, this rear box delivers that unmistakable Cobra Sport tone with a clean, drone-minimised finish when used with the matching PPF delete system. We have fitted this setup for customers who wanted a louder, deeper, more motorsport-inspired sound, and the feedback has been outstanding. The 3 inch 76.2 mm pipework opens up the B58’s character while maintaining excellent fit and finish.

What is included

  • Cobra Sport rear box to suit Cobra PPF fitment on BMW M140i F20 F21 LCI
  • Fittings and gaskets for installation

Notes and requirements

  • Must be used with Cobra Sport BM109 PPF and resonator delete pipework to create a non resonated cat back system
  • Will not bolt to the OEM BMW M140i exhaust

Professional fitting available

We recommend professional installation. Nforcd offers fitting at our Warwickshire workshop. For a quote or to book your slot, email Sales@nforcd.com.