BMW M340i 440i Downpipe 200 Cell Hi-Flow Sports Cat and Heat Shield by MTC Motorsport
Unlock serious performance on your B58 BMW and Supra with the MTC Motorsport 4.5 inch stainless steel downpipe with integrated 200 cell hi-flow sports cat and heat shield. Built from SS304 aircraft-grade stainless steel and precision TIG welded in-house, this MTC Motorsport downpipe delivers sharper throttle response, faster turbo spool and an aggressive exhaust note while controlling heat and maintaining road legality.
Why choose this MTC Motorsport B58 200 cell sports cat downpipe
- 4.5 inch stainless outlet straight from the turbo for rapid spool and crisp throttle response
- Hi-flow 200 cell sports catalytic converter optimised for power and drivability
- Mandrel-bent construction for maximum gas flow and minimal backpressure
- Integrated heat shield to help manage under-bonnet temperatures
- SS304 aircraft-grade stainless steel and TIG welded durability
- Noticeable power gains and a deeper, more aggressive B58 exhaust tone
- Lower EGTs and reduced turbocharger backpressure, increasing cylinder charge
- Substantial weight saving versus the factory catalytic converter
- Road legal and Euro 5 rated. Should pass an MOT emissions test when fitted
At Nforcd we have installed and tested this MTC Motorsport B58 downpipe and consistently seen gains of around 20 to 25 bhp. Customers love the way it wakes up the BMW B58 engine, from M340i to 440i and beyond, with stronger mid-range, quicker response and a more engaging sound.
Perfect fitment for OPF and PPF models
This downpipe is designed for OPF and PPF vehicles only. Compatible applications include:
- BMW G20 and G21 M340i 3.0L 285 kW / 374 PS 2019 OPF model
- BMW G22 440i 3.0L 285 kW / 387 PS 2019 OPF model
- BMW G30 and G31 540i 3.0L 250 kW / 340 PS 2018 OPF model
- BMW G32 640i 3.0L 250 kW / 340 PS 2018 OPF model
- BMW G11 and G12 740i 3.0L 240 kW / 326 PS 2019 OPF model
- BMW G14, G15 and G16 840i 3.0L 250 kW / 340 PS 2019 OPF model
- BMW Z4 G29 M40i 3.0L 250 kW / 340 PS 2019 OPF model
- Toyota Supra MK5 A90 GR 3.0L 250 kW / 340 PS 2019 OPF model
Key search terms
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Installation and support
Professional installation is recommended, as exhaust tolerances can vary slightly between cars. Feedback from owners is that this system is straightforward to fit. For expert fitting, choose Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Why buy from Nforcd
- Proven on our own B58 builds with real-world gains of around 20 to 25 bhp
- Trusted customer feedback on performance, sound and quality
- Specialist installation and support available from our Warwickshire workshop
Upgrade your BMW B58 with the MTC Motorsport 200 cell hi-flow sports cat downpipe and heat shield for stronger performance, quicker spool and an addictive exhaust note. Order today.