B58 4.5" Catless Downpipe for 2016 – 2023 BMW M240i/340i/440i/540i/740i/840i & xDrive

B58 4.5” Catless Downpipe | Maximum Performance & Aggressive Sound | In Stock Unleash the full potential of your BMW B58 engine or Toyota Supra B58 with the 4.5” Catless Downpipe, designed for maximum airflow, increased power, and an aggressive exhaust tone. By eliminating the restrictive stock catalytic converters, this upgrade reduces backpressure, enhances turbo spool, and improves throttle response, making it an essential modification for enthusiasts seeking optimal performance gains. THIS PRODUCT IS FOR OFFROAD USE ONLY THIS DOES NOT FIT GEN 3 B58. HERE IS THE LINK TO OUR GEN 3 B58 DOWNPIPE. Engineered for Maximum Power & Sound With a free-flowing 4.5-inch design, this downpipe optimizes exhaust flow, allowing your turbo to spool faster, which translates to higher power output and a more responsive driving experience. Expect up to 30HP gains on a tuned stock turbo and even greater performance on upgraded turbo setups. Key Features & Benefits In Stock & Ready to