Milltek HJS Tuning ECE Downpipes – 300 Cell ECE Approved HJS Tuning Catalyst – F32 and F33 M440i Coupe and Grand Coupe – xDrive and non xDrive – 2017 to 2020 – Part Number: SSXBM1039_3
Upgrade your BMW with genuine Milltek performance. The Milltek HJS Tuning 300 cell ECE approved sports cat downpipes deliver high flow, exceptional build quality and a refined performance sound. Designed, developed and hand finished in the UK, this Milltek Sport downpipe is manufactured from aerospace grade Type 304 non magnetic stainless steel for superb durability and corrosion resistance. Mandrel bent pipework maintains a constant radius for optimised gas flow and responsiveness, while the precision engineered HJS 300 cpsi catalyst provides ECE approved performance and quality.
Every Milltek system undergoes comprehensive acoustic development to create a tone that is sporty and crisp without inducing NVH, drone or cabin resonance. The result is a premium performance downpipe that improves flow and response, works beautifully with OEM or Milltek cat back systems and elevates your driving experience every time you start the car.
Why choose this Milltek HJS 300 cell ECE downpipe
- Genuine Milltek Sport with HJS Tuning 300 cell ECE approved catalyst
- Type 304 stainless steel throughout for long term durability
- Mandrel bent pipework for optimised exhaust gas flow
- Sporty, refined sound without unwanted drone
- Designed, developed and hand finished in the UK by time served craftsmen
- Direct performance upgrade that pairs perfectly with OEM or Milltek cat back exhausts
- Trusted by enthusiasts – we have used this setup ourselves and our customers have been consistently impressed
- Part number for easy reference and ordering: SSXBM1039_3
Fitment
BMW F32 and F33 M440i Coupe and Grand Coupe, xDrive and non xDrive, 2017 to 2020. If you are unsure on compatibility, contact us and we will be happy to help.
Installation and support
For professional fitting, we recommend booking with Nforcd in Warwickshire. Request a fitting quote via Sales@nforcd.com.
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Milltek quality
Milltek Sport products are engineered to perform and built to last. Using high grade materials and expert craftsmanship, Milltek focuses on flow efficiency, longevity and sound quality so you can enjoy a premium upgrade with confidence.