Boost performance while keeping emissions in check with these High-Flow Catted Downpipes for the BMW G80 M3 and G82/G83 M4. Engineered for the powerful S58 engine, these downpipes feature 200-cell high-flow catalytic converters that increase exhaust velocity, reduce backpressure, and enhance turbo efficiency—all while helping to minimize CELs and meet emissions standards in less restrictive regions.
