Milltek Cat-back Exhaust System - Road, Polished Tips for BMW M135i F20 F21 2012 onwards
Unlock the sound and flow your BMW M135i deserves with the Milltek cat-back exhaust. This UK-made performance exhaust system is designed, developed and hand finished in Britain using aerospace grade type 304 non-magnetic stainless steel. The result is a durable, corrosion-resistant, long-lasting catback that delivers a sporty, crisp exhaust note without cabin drone. Perfect for daily driving and spirited road use.
This Milltek cat-back for the BMW 1 Series M135i F20 and F21 is engineered with mandrel bent pipework for constant-radius bends and optimised gas flow. Carefully enlarged bore diameters help performance while maintaining strong mid-range torque. The Road specification with polished tailpipes gives a refined, premium OEM+ look with a deeper, more engaging sound that enhances the character of the M135i.
We have fitted and used this system on customer M135i cars and feedback has been consistently excellent. Customers love the quality, the fit, the finish and the balanced soundtrack that is sporty without being intrusive. If you are searching for a BMW M135i exhaust upgrade that combines performance, quality and everyday usability, this Milltek cat-back hits the sweet spot.
Key features
- BMW M135i F20 F21 2012 onward cat-back exhaust system
- Road specification with polished stainless steel tailpipes
- UK designed, developed and hand finished by Milltek
- Aerospace grade type 304 stainless steel for exceptional longevity
- Mandrel bent pipework for optimised gas flow and response
- Carefully tuned sound that is sporty and crisp without drone
- High quality construction throughout pipework, silencers and hardware
- Direct performance exhaust upgrade for the BMW 1 Series M135i
Fitment
- BMW 1 Series M135i 3 Door F21 - 2012 onward
- BMW 1 Series M135i 5 Door F20 - 2012 onward
- Polished tip catback suitable for road use
Why choose this Milltek cat-back for your M135i
- Enhances the signature BMW M135i sound with a deeper, more refined tone
- Maintains comfort with no unwanted NVH, drone or cabin resonance
- Durable, corrosion resistant T304 stainless steel that keeps its finish
- Designed specifically for the M135i F20 F21 for a precise fit and quality feel
Installation and fitting
Professional fitting available at Nforcd in Warwickshire. Request a fitting quote by emailing Sales@nforcd.com. We supply and fit performance exhausts for BMW M135i F20 F21 and can advise on the best setup for your goals.
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