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Unleash next-level performance from your BMW X3M or X4M with the Untd. Performance Catless Downpipe. Designed specifically for the F97 X3M and F98 X4M equipped with the high-output 3.0L twin-turbo S58 engine, this race-inspired downpipe eliminates the restrictive factory catalytic converters to deliver maximum exhaust flow, quicker turbo response, and a raw, aggressive exhaust note that commands attention.
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Transform your BMW X3M or X4M into a sharper, faster, and more aggressive machine with the Untd. Performance Catted Downpipe w/ Heat Shield. Built for the F97 and F98 platforms powered by the formidable 3.0L twin-turbo S58 engine, this downpipe delivers increased flow, improved turbo response, and a refined exhaust tone—while incorporating a high-flow catalytic converter and integrated thermal shielding for a street-friendly setup.