Description
Unlock the full potential of your BMW or Toyota B58-powered vehicle with the MST Performance 6" Catted Downpipe, engineered for ultimate performance, durability, and compliance. This premium downpipe features one of the largest diameters available for the B58 engine and integrates a high-efficiency Euro 6 400-cell catalytic converter, delivering both power and cleaner emissions without triggering a CEL.
Whether your vehicle is stock or tuned, this downpipe is designed to reduce backpressure and exhaust temperatures significantly—making it a crucial upgrade for enthusiasts looking for reliable gains and aggressive sound. Precision-crafted with a CNC turbo adapter for optimal flow, this downpipe is dyno-proven to deliver an additional 18–25 horsepower and 4kgm torque on stock vehicles.
Designed to work with GPF/OPF-equipped cars and suitable for builds exceeding 800hp, this is a track-focused, race-use component that combines world-class engineering with uncompromised performance.
Key Features:
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6" diameter MST Performance downpipe – the largest available for B58 engines
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Euro 6 400-cell catalytic converter – high-flow design for optimal emissions and performance
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No CEL (Check Engine Light) guarantee
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Delivers efficiency comparable to straight pipes
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CNC-machined turbo adapter tailored for large-diameter fitment
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Compatible with GPF/OPF-equipped vehicles
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Dyno-tested results: +18–25hp & +4kgm torque on stock applications
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Ideal for both stock and modified engines – supports power levels of 800hp+
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Significantly lowers exhaust gas temperatures and backpressure
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Designed for race/off-road use with improved sound and throttle response
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Available for both GPF and non-GPF vehicle versions
Fitment:
Compatible with the following BMW and Toyota vehicles equipped with the B58 3.0T engine:
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2016+ F20 BMW M140i
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2016+ F22 BMW M240i & M240i xDrive
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2016+ F30 / F31 / G20 BMW 340i & 340i xDrive
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2016+ F32 / F33 / F36 / G22 / G23 / G26 BMW 440i & 440i xDrive
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2016+ G30 / G31 BMW 540i & 540i xDrive
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2016+ G11 / G12 BMW 740i & 740i xDrive
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2019+ A90 / A91 Toyota Supra
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2022+ G42 BMW M240i
Upgrade your BMW or Toyota B58-powered vehicle with the MST Performance 6" Catted Downpipe—engineered for maximum flow, aggressive sound, and emissions compliance without sacrificing performance.
PLEASE NOTE:
These parts are for OFF ROAD / RACE USE ONLY. They are not USA 50 state legal & not legal in some countries.
IMPORTANT NOTICE: You are responsible for paying any possible duties charged for this item.
