Milltek Large Bore Downpipes and Hi-Flow Sports Cats for BMW F80 M3 and M3 Competition Saloon
Unlock the sound and performance your BMW deserves with Milltek Large Bore Downpipes and Hi-Flow Sports Cats. Hand-finished in the UK from aerospace grade type 304 non-magnetic stainless steel, this premium Milltek exhaust upgrade delivers optimised gas flow, a sharper, sportier tone and outstanding durability for the BMW F80 M3 and M3 Competition Saloon non OPF models.
Every Milltek system is designed, developed and produced using mandrel-bent pipework to maintain a constant radius through every bend. Bore diameters are carefully enlarged over stock to reduce back pressure and drive performance, while preserving strong mid-range torque. Acoustic development ensures a crisp, motorsport-inspired note without unwanted NVH, drone or cabin resonance.
Key Features
- Genuine Milltek Large Bore Downpipes with Hi-Flow Sports Catalysts
- Aerospace grade type 304 stainless steel construction for strength and corrosion resistance
- Mandrel-bent design for smooth, consistent gas flow
- Optimised bore sizing to enhance performance while retaining drivability
- Sporty, refined exhaust tone without drone
- Designed, developed and hand-finished in the UK
Compatibility and Requirements
- Vehicle fitment: BMW F80 M3 and M3 Competition Saloon non OPF
- Fits with Milltek Sport cat-back system only
- Requires Lambda Extensions
- Requires 2 x BMW part number 18307851168 for installation, available from your local BMW dealer
Why Choose This Milltek Upgrade
This is a proven performance exhaust upgrade that transforms the driving experience of the F80 M3. The larger bore and precision mandrel bends free up exhaust flow for improved response and power potential, while the high-flow sports cats maintain emissions performance compared with decat options. The result is a deeper, crisper soundtrack that remains refined on the motorway and energetic on boost.
Real-World Confidence
We have installed these Milltek downpipes and sports cats on our own cars and customer vehicles. Fitment, finish and sound quality are consistently excellent, and customer feedback has been overwhelmingly positive about the performance, tone and build quality.
Professional Fitting
Nforcd offers professional installation at our Warwickshire workshop. For a fitting quote or to check availability, please email Sales@nforcd.com.
Good to Know
These downpipes are designed to be used with a Milltek Sport cat-back system. If you are unsure about compatibility or local road-use regulations, please contact us before ordering.
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