Maximize performance and thermal efficiency in your McLaren 720S with the Untd. Performance Catless Downpipe with Integrated Heat Shield. Built for drivers who demand the highest levels of performance, this downpipe eliminates the restrictive factory catalytic converters, significantly improving exhaust flow, turbo efficiency, and power delivery. The addition of a built-in heat shield helps manage under-hood temperatures—critical for maintaining reliability in high-performance applications.