Scorpion Non-Res/Non Resonated Cat-Back Exhaust (Catback) for BMW 1 Series M135i F20 F21 Hatchback 2012-2015 - 3in/76mm Performance Sports Exhaust, Black Ceramic Tips, UK Made, Direct Bolt-On Upgrade

BMW M135i F20 F21 non-res cat back with black ceramic tailpipes

Looking for a louder, sharper exhaust note for your BMW 1 Series hot hatch without going overboard on comfort? This non-resonated cat back from Scorpion is a proven performance upgrade for the 3.0 turbo M135i, delivering a deeper, more aggressive tone and real-world gains. Built in the UK and designed to mate to the factory front section or a Scorpion front section, it is a direct replacement that unlocks flow, reduces weight and adds premium style with stealthy black ceramic tail pipes.

Why enthusiasts choose this M135i cat back

• Non-res layout for a sportier, louder soundtrack and a more characterful turbo-six note
• Black ceramic tailpipes for an understated, motorsport-inspired finish
• Made in England with precision craftsmanship for long-lasting quality
• Dyno-verified power increase and meaningful weight reduction
• Direct replacement for the factory rear system - designed to work with OE or Scorpion front sections

Key performance data

• Pipe diameter: 76 mm / 3"
• OE weight: 20.4 kg
• Scorpion system weight: 16.6 kg
• Weight saving: 3.8 kg
• OE power: 301.6 bhp
• With this system: 311.13 bhp

Fitment and compatibility

• BMW M135i 2012 - 2015 hatchback - F20 and F21
• Works with the standard downpipe or Scorpion front section
• Designed as a direct replacement for the stock rear exhaust

What you’ll notice on your M135i

• Stronger, richer tone at idle and cruise, with a pronounced, sporty sound under load
• Improved exhaust flow supporting the M135i’s N55 turbocharged engine
• Clean, stealth look thanks to the ceramic-coated black tail pipes

Trusted upgrade, customer approved

We’ve installed and driven this system and it delivers exactly what M135i owners want from a non-res cat back: a purposeful soundtrack, quality fit and finish, and measurable gains. Our customers consistently rate the tone and build quality highly, with many calling it their favourite mod on the car.

Common search terms

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Professional fitting

Want this supplied and fitted by specialists? Book installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quotation and availability.