BMW M135i F20 F21 Performance Exhaust System with Titanium Tailpipes by Milltek - Race Sound, Non-Resonated - 2012 Onward

Give your 1 Series M135i the soundtrack and response it deserves with this UK-built Milltek rear system from the catalytic converter back. Featuring lightweight titanium tailpipes and a Race non-resonated centre section, it delivers a sharper, more exciting tone while retaining everyday drivability. Ideal for drivers seeking a louder, crisper exhaust note and freer breathing without touching the factory catalysts.

Why this upgrade stands out

• Engineered for the BMW M135i hatchback F20 5-door and F21 3-door, 2012 onward
• Race non-resonated layout for a more aggressive, motorsport-inspired sound
• Titanium tailpipes for a premium finish and weight saving at the rear
• High-grade T304 stainless steel pipework for long-term durability
• Constant-radius bends for smooth gas flow and improved throttle response
• Developed to keep cabin boom in check while enhancing character on throttle
• Designed, developed and hand-finished in the UK

Built for performance and longevity

The system uses corrosion-resistant stainless steel throughout, with carefully specified tubing diameters and smooth, free-flowing bends to reduce back pressure. The result is crisper response, stronger mid-range pull and a deeper, more purposeful tone at higher revs. Titanium tailpipes complete the look with a high-end motorsport aesthetic.

Real feedback from our workshop

We have fitted this setup to customer M135i models and the reactions have been consistently positive: quicker response, a more engaging soundtrack and a quality finish that looks right at home on the 1 Series. It is a proven upgrade that pairs perfectly with a Stage 1 tune or as a standalone sound and style enhancement.

Compatibility

• BMW 1 Series M135i F20 5-door - 2012 onward
• BMW 1 Series M135i F21 3-door - 2012 onward
• From the catalytic converter back for straightforward installation using factory mounting points
• Retains OE emissions hardware and factory lambda sensors

Fitment and installation

Direct bolt-on fit using the original hangers and supplied hardware. For a flawless install and perfect tip alignment, we recommend professional fitting at MJ Modifications in Warwickshire. Request a fitting quote: info@mjmodifications.co.uk.

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Transform the character of your M135i with a UK-made system that looks incredible and sounds even better. Order now for a sharper response, lighter tail section and a thrilling race-inspired note on your BMW 1 Series.