REDSTAR BMW N20 catless downpipe has long 3.5in OD section and smooth transition to the OEM exhaust.
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Removing of factory catalytic converters will trigger a сheck engine light (can be eliminated with optionally O2 sensors restrictors). Firmware update recommended to get maximum performance gains.
OFF ROAD/MOTORSPORT USE ONLY!
This product is not designed to meet any emissions standards and is not for street or highway use. This product is not certified and may not be legal for use on emissions controlled vehicles in any country/jurisdiction.