Milltek HJS Tuning ECE Downpipes - 300 Cell ECE Approved HJS Tuning Catalyst for BMW F30 and F31 LCI M340i 2017 to 2020 - Part Number SSXBM1039_2
Upgrade your BMW M340i exhaust with the Milltek HJS Tuning ECE Downpipe featuring a 300 cell ECE approved HJS Tuning catalyst. Hand-finished in the UK by time-served craftsmen, this premium Milltek Sport downpipe is built from aerospace grade type 304 non-magnetic stainless steel for outstanding durability, long-term corrosion resistance and a finish that resists discolouration. Expect optimised gas flow, a genuine performance-focused design and a refined sound that stays crisp and sporty without drone, NVH or cabin resonance.
This is the go-to BMW M340i downpipe solution for owners who want quality, performance and ECE approval. At Nforcd we rate this system highly, we have used Milltek systems extensively and our customers have been consistently impressed with the build quality, fit and the sound. If you are searching for a BMW F30 M340i sports cat or a BMW F31 M340i ECE downpipe, this SSXBM1039_2 is the one to choose.
Why choose this Milltek HJS 300 cell sports catalyst
- ECE approved 300 cell HJS catalyst for performance with compliance in applicable markets.
- Aerospace grade T304 stainless steel throughout pipework, silencers and hardware for long service life.
- Mandrel-bent construction for constant radius bends and optimised gas flow.
- Enlarged bore diameters over stock to unlock performance without sacrificing mid-range torque.
- Developed acoustics that deliver a sporty, crisp tone with no drone, NVH or unwanted cabin resonance.
- Hand-finished in the UK by Milltek’s expert craftsmen for precision fit and finish.
Fitment
- BMW 3 Series F30 LCI M340i Saloon 2017 to 2020 - xDrive and non xDrive models
- BMW 3 Series F31 LCI M340i Touring 2017 to 2020 - xDrive and non xDrive models
Key details
- Brand: Milltek Sport
- Product: HJS Tuning ECE Downpipes with 300 cell ECE approved HJS catalyst
- Part number: SSXBM1039_2
- Material: Type 304 non-magnetic stainless steel
- Application: BMW M340i F30 and F31 LCI 2017 to 2020
Installation and support
Professional fitting recommended. For installation by specialists, choose Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
What you will experience
- Smoother, freer-flowing exhaust path thanks to mandrel bends and optimised bore sizing.
- A sharper, more engaging exhaust note that remains refined on the motorway with no drone.
- Milltek’s renowned UK-made quality for your BMW M340i.
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