Milltek Large-Bore Downpipes with Hi-Flow Sports Cats for BMW F80 M3 & M3 Competition Saloon (2014-2018, Non-OPF) - Stainless Steel - Fits Milltek Sport Cat-Back Only - Requires Lambda Extensions & 2x BMW 18307851168

BMW F80 M3 S55 Catted Turbo Downpipes by Milltek Sport

Give your F80 M3 the flow and soundtrack it deserves. Milltek’s UK built T304 stainless catted turbo pipes replace the restrictive factory front sections to improve exhaust velocity, sharpen throttle response and deliver a richer, motorsport inspired note while maintaining everyday refinement. Designed specifically for the S55 twin turbo saloon, this premium upgrade is the perfect match for drivers who want performance, quality and longevity from a trusted British manufacturer.

Why enthusiasts choose this setup

• T304 stainless construction for long term corrosion resistance and durability
• Mandrel formed tubing with smooth transitions for excellent gas speed and reduced backpressure
• High flow sport catalytic converters for performance with an emissions conscious layout
• Precision fitment on the S55 engine with OEM style connections
• Deep, refined tone under load and comfortable cruising on the motorway
• Engineered and produced in the UK by Milltek Sport

Fitment and requirements

• Vehicle: BMW M3 F80 and M3 Competition Saloon without OPF or GPF
• Years: 2014 to 2018
• Compatible only with Milltek Sport cat back systems for this platform
• Lambda sensor extensions required
• Requires 2 x BMW part number 18307851168 for installation

What you can expect

We have installed these catted front pipes on our own and customer S55 cars. Fitment is spot on, the finish is first class and the sound is exactly what F80 owners are looking for: purposeful under throttle, civil on steady cruises. Customer feedback has been consistently positive for build quality, tone and drivability.

Professional fitting

Prefer expert installation Call on MJ Modifications in Warwickshire. For a fitting quote or workshop availability, email info@mjmodifications.co.uk and our team will be happy to help.

Good to know

This front section is designed to be used with a Milltek Sport rear system. If you are unsure about compatibility or local road use regulations, please contact us before ordering.

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