Milltek Sport HJS 300 CPSI ECE Approved Catted Downpipe | High Flow Catalytic Converter Turbo Outlet for BMW N55 2 Series F87 M2 & F22 M235i (3in/76.2mm) Direct Fit to OE/Milltek Cat-Back | Sports Catalyst Front Pipe – SSXBM1037

HJS 300 CPSI ECE Compliant Catted Turbo Outlet for BMW F87 M2 and F22 M235i N55 - SSXBM1037

Unlock sharper throttle response, faster turbo spool and a richer, more purposeful exhaust note with this Milltek Sport upgrade using the premium HJS 300 cell catalyst. Engineered specifically for the BMW N55 platform in the F87 M2 and F22 M235i, this high-flow performance catalyst connects seamlessly to the original or Milltek cat-back, delivering serious flow gains while retaining ECE compliance. If you want daily-drive refinement with track-ready urgency from your N55, this is the catted front section to choose.

Why enthusiasts choose this performance catalyst

• HJS 300 CPSI ECE compliant catalyst for outstanding flow with road legality
• Significant reduction in back pressure for improved drivability and power potential
• Clean, turbocharged soundtrack without drone
• Direct bolt-on to factory system and Milltek Sport cat-backs for an OE-style install
• Large bore 3 inch 76.2 mm tubing to keep gases moving efficiently

We have installed this setup on multiple N55 builds at MJ Modifications and it has been consistently excellent. Fitment is straightforward, the quality is exactly what you expect from Milltek and customer feedback on the transformation in response and tone has been overwhelmingly positive.

Vehicle fitment

• BMW 2 Series F22 M235i Coupé 2014 onward - not suitable for xDrive
• BMW 2 Series F87 M2 Coupé 2016 onward

Key details

• Part number: SSXBM1037
• Catalyst: HJS Tuning 300 cell ECE approved
• Pipe diameter: 3 inch 76.2 mm
• Compatibility: mates to OE or Milltek Sport rear sections
• Warranty: 3 year HJS warranty
• Manufacturer: Milltek

Installation and support

Professional fitting recommended. Book with MJ Modifications in Warwickshire for expert installation and setup. Request a quote at info@mjmodifications.co.uk.

Pre-dispatch compatibility check

To confirm the part suits your vehicle, we perform a compatibility check before shipping. Please provide your UK registration or the last 7 digits of your VIN at checkout.

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