MTC Motorsport BMW X3M X4M Competition decat downpipes for the F97 F98 chassis with the S58 engine. These catless de cat downpipes are engineered to maximise performance, improve turbo spool and unleash an aggressive exhaust note on your BMW X3M or BMW X4M.
Crafted from SS304 aircraft grade stainless steel and TIG welded, these BMW X3M decat downpipes and BMW X4M decat downpipes deliver instant throttle response and stronger mid range punch thanks to improved gas flow. Expect noticeable power gains and a deeper, more purposeful sound. In our own testing we have seen 30 to 40 bhp increases on a standard car, with reduced backpressure and lower temperatures helping the S58 breathe and perform at its best.
- Premium SS304 stainless steel construction. TIG welded and mandrel bent for smooth, high flow internals.
- Sharper throttle response from faster turbo spool. Strong performance gains with an aggressive exhaust note.
- Lower EGTs and reduced exhaust backpressure for improved efficiency and maximum performance.
- Substantial weight saving versus OEM catalytic converters.
- Finished in brushed stainless steel. Supplied with gaskets and bolts for a straightforward install.
- Direct fit to the stock catback and to aftermarket catback exhausts that mate to the OEM downpipe.
- Lifetime warranty from MTC Motorsport.
Fitment
- BMW X3M F97 2019+
- BMW X4M F98 2019+
This downpipe upgrade is the perfect choice for anyone searching for BMW X3M X4M decat downpipes, BMW X3M X4M catless downpipes, S58 downpipe upgrade, F97 F98 downpipes, or MTC Motorsport downpipes. The combination of SS304 stainless steel, TIG welded precision and mandrel bent design ensures maximum internal diameter and excellent gas flow without sacrificing drivability.
Real world results and customer feedback
We have fitted these MTC Motorsport decat downpipes at Nforcd and the feedback has been superb. Customers love the stronger mid range, the quicker turbo response and the deeper exhaust tone. Our own testing has shown gains of 30 to 40 bhp on a standard S58 with no other changes.
Installation and support
- Professional installation is recommended as some exhausts sit slightly differently and can be tight.
- You may need to code out the PPF filters on some newer cars.
- We recommend adding Lambda Sensor Spacers to help prevent the engine light in most cases. These are available from Nforcd.
Want us to fit your BMW X3M X4M Competition decat downpipes? Book your installation with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
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