Milltek BMW N55 F20 F21 M135i Cat-Back Exhaust System
Upgrade your BMW 1 Series M135i with the Milltek Sport cat-back exhaust system for the N55 engine. This performance exhaust is engineered for the BMW F20 and F21 M135i, delivering a deeper, sportier sound, sharper throttle response and a significant weight saving over the factory system. Crafted in the UK from high quality type 304 aircraft grade stainless steel, this Milltek M135i cat back is anti-magnetic and less susceptible to discolouration, with full mandrel bends for smooth gas flow and a larger 3.00 inch 76.20 mm bore to optimise performance without sacrificing low-end torque.
If you are searching for BMW M135i exhaust, BMW M135i cat back, M135i F20 exhaust, M135i F21 exhaust, N55 exhaust upgrade, Milltek M135i catback, BMW 1 Series performance exhaust or stainless steel M135i exhaust, this is the system enthusiasts choose for sound, build quality and reliability. We have fitted and used these systems ourselves and our M135i customers consistently praise the tone, fitment and finish.
Key Features
- Cat-Back Exhaust System for BMW M135i N55 F20 and F21
- Unvalved system - unplug the OEM valve and secure the loom during installation
- 3.00 inch 76.20 mm mandrel bent pipework for improved gas flow
- Twin 90 mm GT90 tailpipe style for a purposeful OEM plus look
- Transforms driveability with a crisper throttle response
- Substantial weight saving compared to the OE exhaust
- Low pressure design for maximum performance with no loss of low-end torque
- Precision manufacture to ISO 9001 standards
- High quality type 304 aircraft grade stainless steel throughout
- Designed and manufactured in the UK
Compatibility
BMW 1 Series M135i 3 Door F21 and 5 Door F20, 2012 onwards, N55 engine.
Fitment and Installation
Direct replacement cat-back for the BMW M135i F20 F21 N55. This is an unvalved system. During installation simply unplug the factory exhaust valve and secure the wiring loom and plug safely out of the way.
Want professional fitting. Book with Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Part Numbers
- SSXBM964
- SSXBM965
- SSXBM966
- SSXBM967
- SSXBM1023
- SSXBM1024
Why Choose Milltek for Your M135i
Milltek Sport exhausts are the result of over 20 years of continuous development. Every system uses full stainless construction, mandrel-bent tubing and carefully engineered silencers to achieve a refined yet aggressive soundtrack, real-world performance benefits and long term durability. The finish and fitment are first class and the sound on the N55-powered M135i is a perfect balance for daily driving and spirited use.
Warranty
Milltek two year warranty.
Popular Search Terms
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