Stone Exhaust Eddy Catalytic A215E Catted Downpipe for BMW M2 F87 N55 (2016+) - 80mm High Flow Sports Cat / Catalytic Converter Upgrade - SUS304 Stainless Turbo Downpipe Front Pipe - Euro 6 & UK MOT Legal, No CEL, Bolt-On

BMW M2 F87 N55 Sports Catalyst Upgrade by Stone Exhaust

Unlock sharper throttle response, stronger mid-range pull and a deeper performance soundtrack with the Stone Exhaust Eddy Catalytic A215E. This large-bore 80 mm stainless sports catalyst replaces the restrictive factory catalyst on the BMW M2 F87 N55 3.0 turbo, improving gas flow while staying Euro 6 compliant and UK MOT friendly. It is a direct-fit, plug and play solution that keeps the engine management light off and delivers real gains without compromising drivability.

Why enthusiasts choose this high-flow sports cat

• Patented Eddy Catalytic core for clean emissions at low rpm and freer flow at higher load
• 80 mm large-bore tubing for reduced back pressure and faster turbo response
• Optimised oxygen sensor placement for stable fuelling and smooth power delivery
• SUS304 304-grade stainless construction for durability, corrosion resistance and heat stability
• 7-axis CNC mandrel-bent pipework maintains round internal geometry and gas speed
• Reinforced turbo outlet flange with overlapping welds for strength under extreme temperatures
• 3D scanned OEM path for precision routing and factory-style fitment with no cutting
• Designed to run without triggering a check engine light when installed as intended
• Euro 6 compliant, MOT friendly sports catalyst solution for road use in the UK

Proven performance you can feel

• Power increase: +16.90 PS at 5892 rpm
• Torque increase: +15.9 ft lb at 3697 rpm

Expect quicker turbo spool, punchier mid-range acceleration and a cleaner, more engaging exhaust note. The Eddy Catalytic design behaves like a higher cell cat at low speed for emissions control, then transitions to high-flow characteristics with a vortex effect as rpm and load rise.

Engineering detail

Stone Exhaust reverse engineers the factory component with 3D scanning, then validates the geometry with flow, thermal and pressure simulations. The final assembly is integrally formed from SUS304 stainless, delivering consistent wall thickness, exact flange alignment and long-term reliability.

Fitment

• BMW M2 F87 2016+ with N55 engine
• Direct bolt-on using the original mounting points and sensor locations

Part number

A215E

Recommended pairing

For a complete exhaust upgrade, combine this A215E sports catalyst with the Stone Exhaust M2 F87 N55 Cat-Back Valvetronic System to enhance flow, response and tone across the rev range.

Professional fitting

Want it supplied and fitted by specialists We can install this system at MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Tried and trusted

We have fitted and run this Stone Exhaust Eddy Catalytic A215E on our own N55 cars and for many BMW M2 customers. Feedback has been consistently excellent, with quicker spool, smoother torque delivery and no warning lights when installed correctly.

Warranty

Stone Exhaust 2-year warranty.

Compatibility check

We will confirm compatibility before dispatch. Add your UK registration or the last 7 of your VIN at checkout so we can ensure the correct M2 F87 N55 part is supplied.

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