Milltek Sport B58 Catted Downpipe - HJS 200 Cell High-Flow Sports Cat - OPF/GPF Compatible - BMW G42 M240i xDrive, G20/G21 M340i, G29 Z4 M40i & Toyota GR Supra A90 - SSXTY118

HJS 200 CPSI Sports Catalyst Front Pipe for B58 PPF Models | Part No. SSXTY118

Looking to free up your B58 turbo six and add a sharper, more purposeful tone without compromising day-to-day driveability? This Milltek performance front pipe uses a motorsport-grade HJS 200 CPSI sports catalyst to cut backpressure and let the 3.0 turbo engine breathe. It is designed specifically for petrol particulate filter equipped vehicles, giving you a noticeable uplift in response and a richer sound while keeping things civil on the motorway.

We have fitted this part to customer cars and our own projects and it consistently impresses for build quality, precise fit and a refined, deeper exhaust note. Owners love the OEM-like fitment, smooth turbo spool and the way it complements a remap and other bolt-ons.

Why enthusiasts choose this upgrade

• HJS 200 CPSI sports catalyst for reduced backpressure and improved turbo efficiency
• Precision cast construction for durability, temperature stability and excellent sealing
• PPF and GPF friendly application for modern Euro 6 petrol particulate filter cars
• Enhances throttle response and delivers a more engaging tone with minimal cabin drone
• Ideal foundation for tuned setups and software calibrations
• Milltek quality with proven reliability on B58 platforms

Vehicle applications

• BMW G42 M240i xDrive Coupe with petrol particulate filter 2022 onwards
• BMW G20 G21 M340i Saloon and Touring with petrol particulate filter 2019 onwards
• BMW G29 Z4 M40i Roadster with petrol particulate filter 2019 onwards
• Toyota GR Supra A90 3.0 with petrol particulate filter 2020 onwards

For vehicles without a particulate filter, please select the alternative Milltek option suited to non-PPF setups.

Part number

SSXTY118

Brand

Milltek

Warranty

2 year warranty on the HJS catalyst and lifetime warranty on the front pipe from Milltek.

Professional installation

Want it fitted properly first time? Book expert installation with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Search-friendly terms

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Always check local regulations regarding aftermarket catalytic converters and emissions requirements.