Supersprint S55 Catless Downpipes, Primary Cat Delete & De-Cat Pipes for BMW M3 F80, M4 F82/F83, M2 Competition F87 (2014-2018 Non-OPF/GPF) | 304 Stainless Steel Bolt-On Turbo Outlet/Pre-Cat Bypass | Race/Track Use | Stage 2 Ready | Part No. 989611

Supersprint Primary Catalyst Bypass Pipes for BMW S55 will unleash your 3.0 twin turbo straight-six. Designed for F80 M3, F82 F83 M4 and F87 M2 Competition non OPF models, these turbo outlet pipes replace the restrictive factory primary catalysts immediately after the turbines to free up exhaust flow, sharpen spool and unlock a deeper, more purposeful soundtrack. Crafted from 304-grade stainless with precision TIG welds and smooth radius bends, they are a true direct-fit upgrade that uses factory-style flanges, brackets and lambda sensor ports for a clean plug-and-play install.

We run these on our own S55 builds and they are a customer favourite for drivability and sound. Fitment is spot on, quality is superb and the flow increase makes this one of the most transformative hardware upgrades when paired with software.

Why enthusiasts choose this setup

• Replaces the restrictive primary catalysts for maximum gas velocity and reduced drive pressure
• 304 stainless construction with beautifully finished TIG seams and smooth mandrel-style bends for strength and consistency
• Direct fitment with OE-style connections, mounting points and oxygen sensor bosses
• Quicker turbo response, stronger mid-range and crisper throttle feel
• Pairs perfectly with a Stage 2 remap or custom calibration
• Richer, more aggressive exhaust character on M3, M4 and M2 Competition
• Trusted brand engineering and repeatable results
• Part Number: 989611

Compatibility

• BMW M3 F80 2014 onward
• BMW M4 F82 and F83 2014 onward
• BMW M2 Competition F87 2018 onward non OPF

Important: For non OPF or GPF cars only. Not suitable for Sept 2018 onward models equipped with OPF/GPF.

Emissions light and tuning

After installation the post-cat oxygen sensors will see different readings which can trigger a Check Engine Light. This can be managed with a suitable software calibration or with lambda spacers also known as mini cats or O2 sensor spacers for off-road use. Get in touch for guidance.

Fitting and support

Professional installation recommended. For fitting and setup, contact MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Manufacturer and warranty

Manufacturer: Supersprint

Warranty: Supersprint three year warranty

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