Milltek Sport Cat-Back Exhaust (OPF/GPF Back) - Road - Cerakote Black GT-90 Trims - BMW M4 F82/F83 Coupe & Convertible incl. M4 Competition (OPF/GPF Only) 2019-2020 - SSXBM1125

Milltek Sport OPF-back rear system with black GT90 tailpipes for BMW M4 F82 F83 2019 to 2020 - Part No. SSXBM1125

Give your M4 the soundtrack it deserves. This Milltek Sport OPF-back rear exhaust transforms the character of OPF-equipped BMW M4 F82 Coupe and F83 Convertible models, including M4 Competition, built 2019 to 2020. Finished with stealthy Cerakote black GT-90 tips, it delivers a deeper, sharper tone on throttle and a refined cruise with minimal cabin boom. Built in the UK from premium T304 stainless for long-term durability and a perfect OEM-plus fit.

Why this upgrade

• Purpose-built for cars with gasoline particulate filters - retains factory OPF layout
• Crisp, engaging sound profile tuned for daily use - sporty without intrusive resonance
• High-grade type 304 austenitic stainless steel throughout for strength and corrosion resistance
• Precision mandrel-formed pipework and optimised bore for improved gas flow
• Cerakote satin black GT90 tailpipes for a subtle, aggressive finish - GT-90 styling
• Direct-fit installation to factory mounting points - no cutting of OPF required on compatible cars
• Designed, developed and hand finished in Britain with Milltek’s renowned quality
• Part number: SSXBM1125

Compatibility

• BMW M4 F82 Coupe with OPF - 2019, 2020
• BMW M4 F83 Convertible with OPF - 2019, 2020
• BMW M4 Competition with OPF - 2019, 2020
• OPF GPF models only

Built to perform, built to last

Every Milltek system is engineered for balance: improved gas flow and a cleaner, more purposeful note, without sacrificing refinement. Aerospace-grade T304 non-magnetic stainless resists discolouration, while smooth-radius mandrel bends maintain flow velocity. The result is a premium UK-made upgrade that looks factory-fresh and sounds premium.

What our customers say

We have fitted this system for M4 owners and feedback has been consistently positive, praising the quality, fitment and the mature yet sporty tone. It is a favourite for drivers wanting a high-end UK-built rear system that complements OPF cars.

Professional fitting

Installation by specialists recommended. For supply and fitting, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

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