Scorpion Exhaust High-Flow Sports Cat & De-Cat Secondary Mid-Pipe/Centre Section for BMW M3 F80 & M4 F82 F83 (20142018) Non-GPF/OPF | 70mm | Fits OEM or Scorpion Cat-Back | S55 F8x

Scorpion secondary catalyst options for BMW F80 M3 and F82 F83 M4 non GPF 2014 to 2018

Turn up the character of your S55-powered F8x with Scorpion’s centre mid pipe upgrade. Choose between a high flow secondary sports catalyst section or a catless straight-through secondary pipe to release more sound, improve exhaust gas velocity and reduce restriction on your BMW M3 F80 or M4 F82 F83 non OPF non GPF models from 2014 to 2018. This 70 mm 2.75 inch bore midsection integrates with the factory rear silencer or a Scorpion rear system for a clean, hassle-free fit.

We have fitted and run these on customer cars and in our own builds at MJ Modifications. Feedback is consistently positive for build quality, fitment and the way this centre section transforms tone and response. Expect a deeper, more purposeful note and sharper throttle feel versus the stock secondary converter assembly.

Why enthusiasts choose this mid pipe

• Pick your setup high flow secondary sports catalyst or catless secondary pipes for the F80 F82 F83 platform
• Non particulate filter vehicles only 2014, 2015, 2016, 2017, 2018
• Direct connection to the factory back box or a Scorpion rear section
• 70 mm 2.75 inch bore for freer flow on the S55 twin turbo straight six
• Weight saving compared to the OE centre section 8.3 kg OE vs 7.3 kg Scorpion 1 kg reduction
• Crisper throttle response with a richer, motorsport-inspired soundtrack
• Precision fit with robust construction for long-term durability

Fitment and compatibility

• Chassis BMW M3 F80 and BMW M4 F82 F83 non OPF non GPF
• Years 2014 to 2018
• Mates to the stock rear silencer or Scorpion rear section
• Note the OE exhaust requires a cut unless using Scorpion SBMS073 or SBMS073C
• Referenced part numbers SBMS073 and SBMS073C

Tuning and setup notes

• EML check engine light may be triggered depending on configuration
• Stage 2 ECU calibration recommended for optimal results

Real-world gains you can feel

Replacing the restrictive secondary converter section frees up the S55’s breathing, smoothing gas flow through the mid pipe and unlocking a more engaging, aggressive tone. The upgrade pairs perfectly with a cat-back for a balanced system, but it also delivers noticeable benefits with the factory rear silencer.

Quick specs

• Configuration choice secondary sports catalyst or secondary cat delete
• Bore size 70 mm 2.75 inch
• Weight comparison OE 8.3 kg vs Scorpion 7.3 kg

Installation

Professional fitting available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk to request a quote and booking. We have extensive hands-on experience with F8x exhaust upgrades and can advise on the best setup for road and track use.

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