Wagner Tuning BMW B58 200 CPSI High‑Flow Sports Cat Downpipe SS304 3.5 inch EU6 — Fits M140i M240i 340i 440i 540i 640i 740i X3 M40i X4 M40i — Part No. 500001027
Unlock more performance, faster spool and a deeper, richer exhaust tone from your BMW B58 with the Wagner Tuning 200 CPSI high‑flow sports cat downpipe. Built from high‑grade stainless steel 1.4301 SS304 and featuring a full 3.5 inch diameter with an adapter to the stock exhaust, this EU6 200‑cell metal catalytic converter maximises flow, slashes back pressure and helps your turbocharger work more efficiently. It is an OEM‑fit, bolt‑on upgrade for B58 owners who want genuine quality, proven reliability and serious results from a premium catted downpipe.
At Nforcd we have fitted this B58 sports cat downpipe for customers across the UK and the feedback has been consistently excellent. If you want your M140i, M240i, 340i, 440i, 540i, 640i, 740i, X3 M40i or X4 M40i to breathe better, spool quicker and pull harder, this Wagner Tuning downpipe delivers the upgrade your BMW deserves.
Key performance benefits
- Reduced exhaust back pressure for increased power and noticeably stronger torque
- Faster turbo spool and sharper throttle response for a more engaging drive
- Lower thermal load on the turbocharger to support reliability on road and track
- Deeper, sportier exhaust note while retaining a high‑flow EU6 metal catalyst
- Direct OEM replacement with precise fitment and adapter to the stock cat‑back
Technical highlights
- EU6 200 CPSI high‑flow metal sports catalytic converter for BMW B58 engines
- High‑grade stainless steel 1.4301 SS304 construction for strength and corrosion resistance
- Full 3.5 inch diameter design with stepped adapter for OEM exhaust connection
- Bolt‑on, no‑cut, no‑weld installation with OEM style fit and finish
Why choose this B58 downpipe
Wagner Tuning is trusted by BMW enthusiasts for quality engineering and exact fitment. This catted B58 downpipe outflows the restrictive factory catalyst to let your engine perform as it should. It is a popular upgrade for spirited road driving and track days, and pairs perfectly with appropriate software calibration where required.
Vehicle compatibility
- BMW F20 F21 M140i 3.0L 250 kW 340 PS 2016 to 2018, except GPF models
- BMW F22 F23 M240i 3.0L 250 kW 340 PS 2016 to 2018, except GPF models
- BMW F30 F31 F34 340i 3.0L 240 kW 326 PS 2015 to 2018, except GPF models
- BMW F32 F33 F36 440i 3.0L 240 kW 326 PS 2015 to 2018, except GPF models
- BMW G30 G31 G38 540i 3.0L 250 kW 340 PS 2017 to 2018, except GPF models
- BMW G32 GT 640i 3.0L 250 kW 340 PS 2017 to 2018, except GPF models
- BMW G12 740i 3.0L 240 kW 326 PS 2015 to 2018, except GPF models
- BMW X3 G01 M40i 3.0L 265 kW 360 PS 2017 to 2018, except GPF models
- BMW X4 G02 M40i 3.0L 260 kW 354 PS 2017 to 2018, except GPF models
Only suitable for cars without GPF or OPF. Due to the increased flow of the sports catalyst, a DME error or check engine light may occur. Coding or appropriate software calibration may be required. On OPF equipped models, coding out related error codes will be necessary.
Installation and fitting
Professional installation recommended. We advise replacing the downpipe gasket and associated hardware during fitment for a perfect seal. For expert fitting, book with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
Part number
Wagner Tuning 500001027
Warranty
2 years manufacturer warranty.
Notes
- Wagner states this product should be fine for a UK MOT. Local testing standards vary and we cannot guarantee a pass. Please check your local regulations.
- Compatibility check available prior to dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout.
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