Milltek Sport Front Primary Cat Delete Decat Pipes for BMW 1 Series 135i N55 (E82/E88) 2010+ - Downpipe/Front Section Catalyst Bypass Race Pipes

Milltek Front Cat Delete Race Pipes for BMW 1 Series 135i N55 E82/E88 2010 onwards

Unlock stronger turbo response, cleaner flow and a richer soundtrack on your BMW 135i with Milltek’s front catalyst replacement sections. Crafted in the UK from premium T304 stainless, these smooth-radius, straight-through pipes reduce back pressure and let the N55 single turbo breathe properly for a sharper, more engaging drive.

Built to Milltek’s renowned standards with precise fitment and a refined tone that avoids tiring cabin boom, this is the go-to front section upgrade for enthusiasts wanting a quality, UK-made solution that performs on road and track.

What you’ll notice

• Improved gas flow for faster spool and crisper throttle pick-up
• Deeper, sportier note under load with controlled volume at cruising speeds
• Durable T304 stainless construction for long-term corrosion resistance
• Direct-fit front section engineered for the N55-powered 135i
• Made in the UK with Milltek’s proven build quality and finish

Why enthusiasts choose this upgrade

• Ideal first step toward a freer-flowing turbo-back system
• Optimised bend profiles to keep velocity high and turbulence low
• Pairs perfectly with performance remaps, intakes and cat-back systems
• Consistently excellent feedback from our BMW 135i customers

Fitment

• BMW 135i 3.0 N55 turbo petrol
• E82 Coupe 2010 onwards
• E88 Convertible 2010 onwards

Installed by MJ Modifications

We’ve fitted these Milltek front sections to multiple 135i builds and customers love the improved response and refined tone. For professional installation at MJ Modifications in Warwickshire, request a tailored quote at info@mjmodifications.co.uk.

Important information

For motorsport and off-road use where emissions equipment changes are permitted. Check local regulations before purchase and installation. Removing the primary catalyst may trigger a warning light and is not suitable for vehicles required to meet road-going emissions testing.

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