Milltek Large Bore De-cat Downpipe - BMW G20 M340i xDrive B58 and Toyota GR Supra A90 3.0 B58 - SSXTY119
Unlock the B58’s potential with the Milltek large bore de-cat downpipe. This catless downpipe is the go-to B58 exhaust upgrade for BMW G20 M340i xDrive and Toyota GR Supra A90 owners who want maximum flow, faster turbo spool and a harder, deeper exhaust note. Engineered in the UK for OPF and GPF equipped cars, this Milltek B58 downpipe delivers serious performance headroom when paired with a Stage 2 calibration, while transforming sound and response on both Supra A90 and M340iX platforms.
Why choose this Milltek B58 decat downpipe
- Large bore 80 mm pipework 3.15 inches for superior exhaust gas flow and reduced back pressure
- Catless de-cat design for track use and off-road motorsport use only
- Optimised for quicker turbo spool, sharper throttle response and stronger mid-range on the B58
- Designed for OPF GPF equipped vehicles for seamless fitment
- Made in the UK by Milltek Sport with precise fit and OE-style hangers
- Part Number: SSXTY119
Real-world results you can feel
We’ve fitted and run this Milltek B58 downpipe on our own cars and for many Nforcd customers. Feedback has been consistently positive, with noticeably faster spool, a more engaging, aggressive exhaust tone and a freer-revving feel. If you are searching for a BMW M340i downpipe, G20 M340i decat, Toyota Supra A90 downpipe or GR Supra B58 decat, this is the proven UK-made solution.
Compatibility
- Toyota GR Supra A90 Mk5 3.0 B58 2019 onwards OPF GPF equipped
- BMW 3 Series G20 M340i xDrive 3.0 B58 2019 onwards OPF equipped
Technical details
- Bore diameter: 80 mm 3.15 inches
- Configuration: Large bore de-cat downpipe no catalyst
- Manufacturer: Milltek Sport
- Part Number: SSXTY119
Warranty
Milltek lifetime warranty on the downpipe. Note: catalytic warranties apply to catted variants only.
Fitting and support
Professional installation recommended. Book fitting with Nforcd in Warwickshire and request a quote via Sales@nforcd.com.
Important information
This is a decat downpipe for track and off-road use only. Not road legal. May require appropriate ECU calibration and may trigger an engine management light on vehicles with factory emissions monitoring. Check local regulations before purchase.
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